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( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and this is where i rest my chin , so we call it a chin rest . ( violins playing ) in violin we have different positions . the one that 's furthest away from me is first position . | there 's not any reason for the integral sign on violins , is there ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and this is where i rest my chin , so we call it a chin rest . ( violins playing ) in violin we have different positions . the one that 's furthest away from me is first position . | why do violins sound higher than cellos ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | this is a board where we put our fingers so it 's called a finger board . and this is where i rest my chin , so we call it a chin rest . ( violins playing ) in violin we have different positions . | is it important to put a hanker cheif in your chin rest ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | that 's me , i feel that when i see it coming up , i usually circle the place it says solo , my solo , in red pencil . so we turn the page in the middle of the piece , and i can see it coming up , i can just feel my heart rate start to go faster , and faster . and , i basically say three words to myself , `` go for it ... | is n't the person on the inside of the orchestra supposed to turn the page ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | i actually show it to my audience . ( playing sliding violin notes ) and so the slide is a very personal thing that violinists can use to bring the music to life . ( orchestra playing slowly ) concert master is basically the quarterback of the team . | how often should a violinist use a rosin ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | it 's amazing that it 's so old , and yet it 's in really good condition , real healthy , and these things are all modern things that we put on here . this is called a tail piece that kind of holds the strings in place . this is , well , it looks like a bridge , and that 's what we call it , it 's a bridge . | how many notes are in all the strings all together ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | ( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . | what 's the difference between a principal and a concertmaster ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | it 's amazing that it 's so old , and yet it 's in really good condition , real healthy , and these things are all modern things that we put on here . this is called a tail piece that kind of holds the strings in place . this is , well , it looks like a bridge , and that 's what we call it , it 's a bridge . | how do you memorize what strings are what ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | why is the 1st violinist called a `` concertmaster '' and not just `` 1st violin '' or `` principal violinist '' ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | how many violin sizes are there ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | what is violin in spanish ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | how many strings does a violin have ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | now , sometimes , going from the first to the third floor , i want to be very clean . ( violin sounds ) but sometimes , i want to give it a little style , and a little bit of something a little spicy , then i might do what 's called a slide , in which case , i do n't hide anything that 's going on as my elevator is goi... | if you do n't wipe the rosin off your instrument what will happen ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then i have second position , third position , fourth position , fifth , sixth , seventh , i go up to about eighth position or so . now , when i go from one position to the next , i like to think of it like i 'm taking an elevator to a different floor . like in first position , i 'm going to the third position , i ... | i 've always wondered : how does a composer indicate something like a slide ( ) or vibrato with notation ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | it 's amazing that it 's so old , and yet it 's in really good condition , real healthy , and these things are all modern things that we put on here . this is called a tail piece that kind of holds the strings in place . this is , well , it looks like a bridge , and that 's what we call it , it 's a bridge . | violins do n't have frets , then how do violinists know the exact place to place their right hand fingers ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and this is where i rest my chin , so we call it a chin rest . ( violins playing ) in violin we have different positions . the one that 's furthest away from me is first position . | why are there so many violins in an orchestra ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and this is where i rest my chin , so we call it a chin rest . ( violins playing ) in violin we have different positions . the one that 's furthest away from me is first position . | i thought the piano was the most important intsrument in an orchestra , by any chances , are the violins most important ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | is violin the most popular instrument throughout the world because the concertmaster of an orchestra is a violinist ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | what is it called when the violinist rubs the string on the violin rapidly ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and this is where i rest my chin , so we call it a chin rest . ( violins playing ) in violin we have different positions . the one that 's furthest away from me is first position . | are the different positions considered to be different octaves ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | why is the violin smaller than the viola ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same trees you might see in your back yard , spruce , and maple , this one was made in 1... | are older instruments favored about ones that are made more recently ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | ( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . | is there any superiority between either ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | will the violin ( wood ) crack if place in a very dry place ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | ( orchestra playing slowly ) concert master is basically the quarterback of the team . the head coach is the same thing as the conductor . they really control everything that 's going on . | what is the significance of the musicians ' seating arrangement meaning do the best players sit closer to the conductor and for what reason ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | i actually show it to my audience . ( playing sliding violin notes ) and so the slide is a very personal thing that violinists can use to bring the music to life . ( orchestra playing slowly ) concert master is basically the quarterback of the team . | what is the name of the symphony music being played ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | how can a violin that 's so old be in such good condition ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and this is where i rest my chin , so we call it a chin rest . ( violins playing ) in violin we have different positions . the one that 's furthest away from me is first position . | does the violin have different chords from piano or are they the same ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | it 's amazing that it 's so old , and yet it 's in really good condition , real healthy , and these things are all modern things that we put on here . this is called a tail piece that kind of holds the strings in place . this is , well , it looks like a bridge , and that 's what we call it , it 's a bridge . | what is the piece of music starting at around the 2.33 mark ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | is violin the toughest instrument to be learnt where one in a 1000 excels in violin ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | ( violins playing ) in violin we have different positions . the one that 's furthest away from me is first position . and then i have second position , third position , fourth position , fifth , sixth , seventh , i go up to about eighth position or so . now , when i go from one position to the next , i like to think of... | question , though- does the resonance from each string depend on the position of the shoulder ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | what 's the importance of the soul of the violin ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and then at that moment when i start playing , i 'm almost screaming it out , i 'm screaming it out in my head , go for it ! ( melodious violin solo ) | why is the bow made together with a violin is different in length with a bow for the same size violin tend to be longer or shorter ? |
( violins tuning ) - if you look at a violin it 's very much like a human body . it has shoulders , and we call this the neck , and this is , it 's not the head , but we call it the scroll , it 's like a rolled piece of paper scroll . and these are the ribs , and the back , and a violin is made from kind of the same tr... | and this is where i rest my chin , so we call it a chin rest . ( violins playing ) in violin we have different positions . the one that 's furthest away from me is first position . | how do the musicians flip the page when they are playing with both hands ? |
( piano music ) steven : we 're in the church of san zaccaria in venice , and we 're looking at one of giovanni bellini 's last altar paintings . beth : this is the san zaccaria altarpiece . it 's a sacra conversazione , which is something that we see a lot of in venice . a group of saints from different time periods a... | beth : the place that bellini would have been most familiar with , that exemplified that tradition , is the church of saint mark 's here in venice , that is covered with golden mosaics , very much like the one we see in the apse here . steven : and yet there 's also a classical and also biblical set of references . if ... | would using oil instead of tempra also have helped ? |
( piano music ) steven : we 're in the church of san zaccaria in venice , and we 're looking at one of giovanni bellini 's last altar paintings . beth : this is the san zaccaria altarpiece . it 's a sacra conversazione , which is something that we see a lot of in venice . a group of saints from different time periods a... | the physical stone , because we can see , for instance , arches moving towards us on the upper left and upper right that frame the landscape , that we seem to be able to walk out , but we do n't know how much of the original frame remains . this painting was taken to paris by napoleon . it was stolen . | is the painting at present on canvas or panel ? |
( piano music ) steven : we 're in the church of san zaccaria in venice , and we 're looking at one of giovanni bellini 's last altar paintings . beth : this is the san zaccaria altarpiece . it 's a sacra conversazione , which is something that we see a lot of in venice . a group of saints from different time periods a... | ( piano music ) steven : we 're in the church of san zaccaria in venice , and we 're looking at one of giovanni bellini 's last altar paintings . beth : this is the san zaccaria altarpiece . | what is the giovanni bellini means ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | how is absolute value used in the world ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | well , you have everything all the way up to -- 7 and 1/2 is exactly 7 and 1/2 away , so you ca n't count that , so 7 and 1/2 , you 'll put a circle around it . same thing true for negative 7 and 1/2 , the absolute value , it 's exactly 7 and 1/2 away . we have to be less than 7 and 1/2 away , so neither of those point... | what exactly is a solution set ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so if this is the number line right there , that is 0 , and we draw some points , let 's say that this is 7 , that is 8 , that is negative 7 , that is negative 8 . what numbers are less than 7 and 1/2 away from 0 ? well , you have everything all the way up to -- 7 and 1/2 is exactly 7 and 1/2 away , so you ca n't count... | in equations , we can shift the numbers/variables from one side to another but , in inequalities can we shift the numbers/variables from one side to another ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so h could be less than 7 and 1/2 . but if it gets too far negative , if it goes to negative 3 , we 're cool , negative 4 , negative 5 , negative 6 , negative 7 , we 're still cool , but then at negative 8 , all of a sudden the absolute value is n't going to be less than this . so it also has to be greater than negativ... | how do you solve a problem with a negative variable in the absolute value bars ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . so plus 19 and 1/2 . on the left-hand side , these guys obviously cancel out , that was the whole point , and we are left with the absolute value of h on the left-hand side is less than . | when sal adds 19 1/2 to - 12 how come he does not have to make the denominator on -12 equal to 19 1/2 ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | on the left-hand side , these guys obviously cancel out , that was the whole point , and we are left with the absolute value of h on the left-hand side is less than . and then if we have 19 and 1/2 , essentially minus 12 , 19 minus 12 is 7 , so it 's going to be 7 and 1/2 . so now we have that the absolute value of h i... | is n't -12 the same thing as -12/1 so if we are adding/subtracting fractions dont the denominators have to be equal ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | how do i solve absolute value equations with absolute value bars on both sides ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | did i just say equation ? it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . so plus 19 and 1/2 . | is the sign supposed to flip ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | well , you have everything all the way up to -- 7 and 1/2 is exactly 7 and 1/2 away , so you ca n't count that , so 7 and 1/2 , you 'll put a circle around it . same thing true for negative 7 and 1/2 , the absolute value , it 's exactly 7 and 1/2 away . we have to be less than 7 and 1/2 away , so neither of those point... | but how can the distance be less than -7 1/2 when it becomes a negative ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | and then if we have 19 and 1/2 , essentially minus 12 , 19 minus 12 is 7 , so it 's going to be 7 and 1/2 . so now we have that the absolute value of h is less than 7 and 1/2 . so what does this tell us ? | how would you solve an absolute value expressions such as |x-3| is less than or equal to 4 ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . so plus 19 and 1/2 . on the left-hand side , these guys obviously cancel out , that was the whole point , and we are left with the absolute value of h on the left-hand side is less than . | how would you graph x > -2 or x < 2 ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . so plus 19 and 1/2 . on the left-hand side , these guys obviously cancel out , that was the whole point , and we are left with the absolute value of h on the left-hand side is less than . | would that b the same as -2 < x < 2 ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . so plus 19 and 1/2 . on the left-hand side , these guys obviously cancel out , that was the whole point , and we are left with the absolute value of h on the left-hand side is less than . | if there is a question 2-|1+x|=y , do you subtract or divide the 2 on both sides ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | what if you had absolute values on both sides of the inequality ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so let me put it this way . so h could be less than 7 and 1/2 . but if it gets too far negative , if it goes to negative 3 , we 're cool , negative 4 , negative 5 , negative 6 , negative 7 , we 're still cool , but then at negative 8 , all of a sudden the absolute value is n't going to be less than this . | why do we not solve for -12 and +12 ... which would give a range of h < 7 1/2 & h > 31 1/2 ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so let me put it this way . so h could be less than 7 and 1/2 . but if it gets too far negative , if it goes to negative 3 , we 're cool , negative 4 , negative 5 , negative 6 , negative 7 , we 're still cool , but then at negative 8 , all of a sudden the absolute value is n't going to be less than this . | around ... in prior problems we constructed another inequality loike |h| - 19.5 > 12 n ( which would suggest that h > 31.5 ... why do n't we use this process in this case and instead we stop at h < 7.5 and deduce that is has to be > -7.5 ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so h could be less than 7 and 1/2 . but if it gets too far negative , if it goes to negative 3 , we 're cool , negative 4 , negative 5 , negative 6 , negative 7 , we 're still cool , but then at negative 8 , all of a sudden the absolute value is n't going to be less than this . so it also has to be greater than negativ... | if the absolute value have negative terms inside , do you change terms inside to positive or leave the inequality as is ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | how do i solve an absolute value inequality with two variables ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so h could be less than 7 and 1/2 . but if it gets too far negative , if it goes to negative 3 , we 're cool , negative 4 , negative 5 , negative 6 , negative 7 , we 're still cool , but then at negative 8 , all of a sudden the absolute value is n't going to be less than this . so it also has to be greater than negativ... | i thought a inequality wth a negative answer does not have a solution because absolute values have to be a non negative number ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | on the left-hand side , these guys obviously cancel out , that was the whole point , and we are left with the absolute value of h on the left-hand side is less than . and then if we have 19 and 1/2 , essentially minus 12 , 19 minus 12 is 7 , so it 's going to be 7 and 1/2 . so now we have that the absolute value of h i... | so why is it that ihi - 19.5 < -12 is a valid inequality with solutions if -12 is a negative number ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so plus 19 and 1/2 . on the left-hand side , these guys obviously cancel out , that was the whole point , and we are left with the absolute value of h on the left-hand side is less than . and then if we have 19 and 1/2 , essentially minus 12 , 19 minus 12 is 7 , so it 's going to be 7 and 1/2 . | what about when the left hand side of the inequality is a negative number ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | how do we solve the inequalities when on both sides of the inequality is an absolute value ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | i often like putting that as an improper fraction , but 1/2 is pretty easy to deal with , so let 's add 19 and 1/2 to both sides of this inequality . did i just say equation ? it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . so plus 19 and 1/2 . | the equation : what is the solution set of the inequality ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so let me put it this way . so h could be less than 7 and 1/2 . but if it gets too far negative , if it goes to negative 3 , we 're cool , negative 4 , negative 5 , negative 6 , negative 7 , we 're still cool , but then at negative 8 , all of a sudden the absolute value is n't going to be less than this . so it also ha... | 5-|x+4| < _ -3 ( < _ is less than or equal to ) -|x+4| < _ -8 could you , in the step above , remove the negatives on both sides of the inequality ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | did i just say equation ? it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . so plus 19 and 1/2 . | i thought you were supposed to change the inequality sign when changing the value to a positive , or what does that apply for ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | on the left-hand side , these guys obviously cancel out , that was the whole point , and we are left with the absolute value of h on the left-hand side is less than . and then if we have 19 and 1/2 , essentially minus 12 , 19 minus 12 is 7 , so it 's going to be 7 and 1/2 . so now we have that the absolute value of h i... | is it right 12 - 19*1/2 = 7*1/2 ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | well , you have everything all the way up to -- 7 and 1/2 is exactly 7 and 1/2 away , so you ca n't count that , so 7 and 1/2 , you 'll put a circle around it . same thing true for negative 7 and 1/2 , the absolute value , it 's exactly 7 and 1/2 away . we have to be less than 7 and 1/2 away , so neither of those point... | |x-4/x+2| is greater than or equal to 2. can the denominator be positive and negative or is it only positive ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | well , you have everything all the way up to -- 7 and 1/2 is exactly 7 and 1/2 away , so you ca n't count that , so 7 and 1/2 , you 'll put a circle around it . same thing true for negative 7 and 1/2 , the absolute value , it 's exactly 7 and 1/2 away . we have to be less than 7 and 1/2 away , so neither of those point... | i 'm having a hard time solving this inequality ... | ( 1/2 ) x-1|+ ( 3/2 ) x < 10 i know to isolate the absolute value on one side of the inequality , but what do i do with the ( 3/2 ) x ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | i often like putting that as an improper fraction , but 1/2 is pretty easy to deal with , so let 's add 19 and 1/2 to both sides of this inequality . did i just say equation ? it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . | how do we answer an inequalitie when there is an x on both sides of an equation ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so h could be less than 7 and 1/2 . but if it gets too far negative , if it goes to negative 3 , we 're cool , negative 4 , negative 5 , negative 6 , negative 7 , we 're still cool , but then at negative 8 , all of a sudden the absolute value is n't going to be less than this . so it also has to be greater than negativ... | why do you have to flip the inequality sign when the constant is negative ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . | why is infinite warfare so bad ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | i often like putting that as an improper fraction , but 1/2 is pretty easy to deal with , so let 's add 19 and 1/2 to both sides of this inequality . did i just say equation ? it 's an inequality , not an equation , it 's an inequality sign , not an equal sign . | how do i go from a inequality equation to a linear form equation ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so if this is the number line right there , that is 0 , and we draw some points , let 's say that this is 7 , that is 8 , that is negative 7 , that is negative 8 . what numbers are less than 7 and 1/2 away from 0 ? well , you have everything all the way up to -- 7 and 1/2 is exactly 7 and 1/2 away , so you ca n't count... | and i dont get how -8 is greater than 7 1/2 ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | so now we have that the absolute value of h is less than 7 and 1/2 . so what does this tell us ? this means that the distance , another way to interpret this -- remember , absolute value is the same thing as distance from 0 -- so another way to interpret this statement is that the distance from h to 0 has to be less th... | can ny1 tell me why the solution set of |4-5x| > 4 is ( -infinity,0 ) u ( 8/5 , infinity ) ? |
we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . so the way we 're going to do it , we 're going to solve this inequality in terms of the absolute value of h , and from there we can solve it for h. so let 's... | we 're told to graph all possible values for h on the number line . and this is a especially interesting inequality because we also have an absolute value here . | how are you supposed to know what way to graph the line ? |
when we talk about the endocrine organs and the endocrine glands and we talk about hormones flying all throughout the body , it 's pretty easy to develop this mental image of that process happening pretty haphazardly . and so you can imagine hormones just coursing all throughout the body , being fired at will and to ev... | and another way that concentrations of hormones in the body are controlled are through feedback loops . and the majority of feedback loops are what we consider to be negative feedback loops . and the idea behind negative feedback loops is that conditions resulting from the hormone action suppress further releases of th... | is the double negative feedback of both the pituitary and the hypothalamus a safety factor ? |
when we talk about the endocrine organs and the endocrine glands and we talk about hormones flying all throughout the body , it 's pretty easy to develop this mental image of that process happening pretty haphazardly . and so you can imagine hormones just coursing all throughout the body , being fired at will and to ev... | and it goes down to the pituitary gland , which i 'll drawn in , in right here . and in response to trh , the pituitary gland releases thyroid-stimulating hormone or tsh . and tsh goes down to the thyroid glands , which would be about right here . | how does the hypothalamus and pituitary gland turn back `` on '' and begin to release trh and tsh again ? |
when we talk about the endocrine organs and the endocrine glands and we talk about hormones flying all throughout the body , it 's pretty easy to develop this mental image of that process happening pretty haphazardly . and so you can imagine hormones just coursing all throughout the body , being fired at will and to ev... | and i 'll write it down . and the hypothalamus releases a hormone , thyroid-releasing hormone -- so trh . and it releases it . | how does a receptor sense an absence of hormone in the blood ? |
when we talk about the endocrine organs and the endocrine glands and we talk about hormones flying all throughout the body , it 's pretty easy to develop this mental image of that process happening pretty haphazardly . and so you can imagine hormones just coursing all throughout the body , being fired at will and to ev... | and i 'll write it down . and the hypothalamus releases a hormone , thyroid-releasing hormone -- so trh . and it releases it . | does the hormone concentration of pregnant women affect the cell growth/metabolism and birth weight of their baby ? |
when we talk about the endocrine organs and the endocrine glands and we talk about hormones flying all throughout the body , it 's pretty easy to develop this mental image of that process happening pretty haphazardly . and so you can imagine hormones just coursing all throughout the body , being fired at will and to ev... | because some of the receptors are located on the pituitary gland and the hypothalamus . and as the thyroid hormones reach the pituitary and the hypothalamus , they signal the hypothalamus and pituitary gland to stop making their hormones . and the hypothalamus and pituitary gland see that we have enough thyroid hormone... | for negative feedback is the hormone binding to the hypothalamus and pituitary gland to stop production ? |
when we talk about the endocrine organs and the endocrine glands and we talk about hormones flying all throughout the body , it 's pretty easy to develop this mental image of that process happening pretty haphazardly . and so you can imagine hormones just coursing all throughout the body , being fired at will and to ev... | when we talk about the endocrine organs and the endocrine glands and we talk about hormones flying all throughout the body , it 's pretty easy to develop this mental image of that process happening pretty haphazardly . and so you can imagine hormones just coursing all throughout the body , being fired at will and to ev... | what are some examples postive feedbacks in endocrine system ? |
when we talk about the endocrine organs and the endocrine glands and we talk about hormones flying all throughout the body , it 's pretty easy to develop this mental image of that process happening pretty haphazardly . and so you can imagine hormones just coursing all throughout the body , being fired at will and to ev... | and another way that concentrations of hormones in the body are controlled are through feedback loops . and the majority of feedback loops are what we consider to be negative feedback loops . and the idea behind negative feedback loops is that conditions resulting from the hormone action suppress further releases of th... | in regards to negative feedback , does triiodothyronine ( t3 ) only work on the pituitary and thyroxine ( t4 ) only work on the hypothalamus ? |
one popular way to treat depression is with antidepressants , and these are drugs that help to relieve the symptoms of depression . but before i talk about them , i want to quickly go over neurotransmission . so here we have a neuron , and neurons receive messages through their dendrites , which are these branching st... | one popular way to treat depression is with antidepressants , and these are drugs that help to relieve the symptoms of depression . but before i talk about them , i want to quickly go over neurotransmission . | can you tell me more about the use of ketamine in treatment of depression ? |
one popular way to treat depression is with antidepressants , and these are drugs that help to relieve the symptoms of depression . but before i talk about them , i want to quickly go over neurotransmission . so here we have a neuron , and neurons receive messages through their dendrites , which are these branching st... | one blocks reuptake of norepinephrine and dopamine , and the other triggers additional release of norepinephrine and dopamine , but both result in an increase of these neurotransmitters in the synapse . both of these drugs are really promising . i 'm sure that they 'll only increase in popularity as time goes on , but ... | why ssri drugs need more than 3 weeks inorder to start to be effective ? |
one popular way to treat depression is with antidepressants , and these are drugs that help to relieve the symptoms of depression . but before i talk about them , i want to quickly go over neurotransmission . so here we have a neuron , and neurons receive messages through their dendrites , which are these branching st... | while these are not life-threatening , these side effects could have a negative impact on a person 's quality of life . there is one exception to this life-threatening clause though , and that 's a condition called serotonin syndrome . this rarely occurs for people who are taking ssris on their own , but it can become ... | what does serotonin syndrome do and what effects does it have ? |
one popular way to treat depression is with antidepressants , and these are drugs that help to relieve the symptoms of depression . but before i talk about them , i want to quickly go over neurotransmission . so here we have a neuron , and neurons receive messages through their dendrites , which are these branching st... | but like the other antidepressants , they are n't side effect free , because they also work everywhere in our brain and our body . so there are some side effects , and these can include sleeping problems , weight gain , and sexual dysfunctions . while these are not life-threatening , these side effects could have a neg... | why do you not include suicide and homocide as side effects per the black box warnings on ssris ? |
one popular way to treat depression is with antidepressants , and these are drugs that help to relieve the symptoms of depression . but before i talk about them , i want to quickly go over neurotransmission . so here we have a neuron , and neurons receive messages through their dendrites , which are these branching st... | more neurotransmitters in the synapse increases the likelihood that they will dock onto the postsynaptic cell and cause an action potential . the next type of antidepressants are tricyclic antidepressants . instead of being named for what they do , these drugs are named for how they look . | how come i 've heard that some antidepressants can cause people to become suicidal ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | we look at what type of lens it is . this lens is a diverging lens . diverging lenses always get contributed , always have a negative focal length that they contribute into this equation . | at sec , why do you decide to use the lens on the left as the `` first lens '' and not the second one on the right ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | we look at what type of lens it is . this lens is a diverging lens . diverging lenses always get contributed , always have a negative focal length that they contribute into this equation . | if a diverging lens is placed in front of a converging lens and the image that the diverging lens creates is on the left of the diverging lens , do we just treat that as a very big do and pretend the first diverging lens is not there ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | that means at this point over here , i 'll make it white because that 's where i labeled this image distance . i 'm going to get an image that 's 2/5 as big as what ? as the 1st image . | so did the eye see the 2/5 image ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | well let 's do that one . magnification equals negative di over do so negative of my image distance for this 2nd lens was , it was negative 6 remember right here ? that 's what we solved . | if we had the first image formed after the second lense , so in other words the object would be negative , how could we continue from there in terms of formula ( f and di ) ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | 15 centimeters will be where the `` object '' for this 2nd lens is going to be . so as we turn this positive 18 into object distance of positive 15 centimeters . why positive ? | why the object distance is positive ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | we look at what type of lens it is . this lens is a diverging lens . diverging lenses always get contributed , always have a negative focal length that they contribute into this equation . | what if the image created by the first lens ends up being located behind the location of the concave lens ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | in other words , if this 1st lens created an image that was closer to our eye than the 2nd lens was , well that 's just all messed up . that 's going to be a negative object distance . your not supposed to hold an object between your eye and the lens . | what is a case where object distance would be negative ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | that 's what we solved . the 2nd lens created an image distance negative 6 . i 'll leave off the units because they cancel and my object distance for the 2nd lens was 15 centimeters . | what happen if the first lens created a virtual image ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | so what does this mean ? negative 6 centimeters . this is always from the lens and negative . remember negative distance means on the left hand side or the opposite side as your eye . | is not f always negative for convex lens ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | we 'll have for this lens it 's going to be 1 over . alright , focal length . what do we look at for focal length ? | what will happen if we cut a lens in half along the principal axis and put them side by side touching each other such that their principal axis is same , what will be new focal length ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | i can tell by the way it 's drawn . since this is a convex lens my focal length is going to be positive 12 centimeters . so that 's what i plug in , positive 12 centimeters equals , alright , object distance so 1 over the object distance that 's 24 right ? | on multiple lens system video , why the focal length positive for convex and negative for concave , is n't it supposed to bethe other way round ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | in other words , if this 1st lens created an image that was closer to our eye than the 2nd lens was , well that 's just all messed up . that 's going to be a negative object distance . your not supposed to hold an object between your eye and the lens . | shouldnt object distance for 2nd mirror be negative ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | so what does this mean ? negative 6 centimeters . this is always from the lens and negative . remember negative distance means on the left hand side or the opposite side as your eye . | all distances r measured from optical centers and object distance of a concave lens is always negative right ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | so as we turn this positive 18 into object distance of positive 15 centimeters . why positive ? well it 's still on this left hand side opposite side as your eye . | when m2 equal to a positive value..we should draw the image on the diverging lens not inverted but why is it drawn inverted when the answer is a positive value ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | we look at what type of lens it is . this lens is a diverging lens . diverging lenses always get contributed , always have a negative focal length that they contribute into this equation . | how is a concave lens forming a real and inverted image ? |
if i had been handed this problem on a physics test i probably would have freaked out . this looks really intimidating but it 's actually not that bad . it 's a classic example of a two lens system and overall , before we get lost in details here . the overall idea of how we 're going to approach is this . we 've got ... | in other words , if this 1st lens created an image that was closer to our eye than the 2nd lens was , well that 's just all messed up . that 's going to be a negative object distance . your not supposed to hold an object between your eye and the lens . | do we ever get negative object distance in reality ? |
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