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koznif | why aren't cars protected underneath? Why aren't they enclosed in some kind of cowling or shield? Would that help to prevent damage and rust? Is there any way to enclose your car in a shield? Would it help anything? | Technology | explainlikeimfive | {
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"You can add an oil coating to prevent rust which can help. The issue with a cover is if water and salt slowly get under there over time they would be hard to wash off and would end up staying and causing rust just as much as ... | [
"url"
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kp5u42 | I always hear that for large amounts of CGI in movies and TV shows it costs a lot of money. What is costing so much money? | Technology | explainlikeimfive | {
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"You probably have a preconceived notion that CGI is cheap. Because lots of shows, particularly animated shows, are filled with CGI these days. Or they're entirely CGI these days. You'd be hard-pressed to find a children's sho... | [
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kpbnhp | how can NAND (not both) be used to represent all logical operations (and, not, or)? | Technology | explainlikeimfive | {
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"You can make a NOT gate by just feeding two of the same thing into a NAND: that is, x NAND x = NOT x. Now that we have a NOT, you can make an AND by running a NAND into a NOT (since a NAND is itself just the opposite of an AND), that is, NOT (x NAND y) = ... | [
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kpfyz9 | Why do we not see satellites in photos of the earth? Or when astronauts on the ISS take videos outside of the station? Where are they? | Technology | explainlikeimfive | {
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"text": [
"They are tiny and we keep the satellites far far away from the space station. Just think of it like this, if you can't see your house from space how would you see a car sized satellite.",
"You can actually photograph the ... | [
"url"
] | [
"url"
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kphx0q | why does google allow apps like “Adblock” in their chrome store? Doesn’t it directly cost them YouTube revenue? Are they forced to have the apps avaliable? | Technology | explainlikeimfive | {
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"text": [
"Its because only a small portion of their hundreds of millions of users use adblock. They are not significantly impacted by it financially and if anything, the person displaying their ads is getting screwed over more than google.",
"Eit... | [
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kpj22g | How are graphics cards improved every year? How can you improve a product so consistently? | What exactly goes on to improve a card? | Technology | explainlikeimfive | {
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"text": [
"The most important factor is the manufacturing process. It's called \"photolit*h*ography\"- which means \"writing *in stone* with light\" (edit: Thanks for the correction). Basical... | [
"url"
] | [
"url"
] |
kpllze | How foldering technique is better than straight up sending message? | I recently came across the foldering technique where instead of straight up sending message, they store their messages like drafts and then different person can access and read these messages. From what I have understood, this technique is better because the message is never sent and the suspicion is less. I am confuse... | Technology | explainlikeimfive | {
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"text": [
"When one sends a normal email it is transmitted across multiple servers to reach it's end point. It's like the message is handed from person to person until it reaches it's destination. Any of those servers could maintain a copy of it. If the message isn'... | [
"url"
] | [
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kpnjz7 | Why do some card readers at the register seem like they take forever to process (asking debit/credit, double confirming total) and others are done completely in 3 seconds? | Technology | explainlikeimfive | {
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"text": [
"The reader only reads the card. It has to go thru internet connection to reach the bank to live process the transaction. If internet at the vendor is slow or being disrupted, the transaction can stall.",
"Oh! This is eli5... | [
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kpqci0 | How are we able to charge our phones wirelessly, and why isnt that technology being used everywhere? | Technology | explainlikeimfive | {
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"text": [
"Wireless charging is done through induction. When you run and electrical current through a coiled wire, you generate a magnetic field a... | [
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kpqkw6 | How does a DVD remember the subtitle settings? | Technology | explainlikeimfive | {
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"ghzdgk7"
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"text": [
"It's not the DVD, it's the player. The player usually remembers, by an ID number on the disc, and it might know that disc 2 is \"the same movie\"."
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kpqzgp | With CPUs getting more and more cores, how come all games seem to be limited to the use of about 2-4? | Technology | explainlikeimfive | {
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"ghzherk",
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"text": [
"Most tasks in a video game are not easily “parallelized”. In other words, the outcome of one thing influences another thing. You could try sorting all the things, and finding groupings that eliminate the dependencies and interactions, but doing that is sl... | [
"url"
] | [
"url"
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kprv22 | can you see refresh rate | I want to know if you can see refresh rate. I want to get a 27in 1080p 144hz monitor, but my dad says you can’t see refresh rate and its a marketing ploy done by the companies. Is he right or wrong? | Technology | explainlikeimfive | {
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"text": [
"He is wrong. Even to people who don't often play games the difference between 60Hz and 144Hz is noticeable, you get diminishing returns at higher refresh rates but you can still tell the difference up above 200Hz. Your eyes don't work like ... | [
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kpvs3k | how can old films be true 4K | I'm very confused how older films like 2001 a space odyssey can be true 4K but newer films like Endgame aren't. I understand a little bit eg shot in 8k and downgraded equals 4K but shot in 2k and upscaled is fake and the more cgi makes it more difficult to make it true 4K but I'm still confused. | Technology | explainlikeimfive | {
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"gi0cmpx",
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"text": [
"Digital film and analogue film are not interchangeable in the sense that film stock does not have a ‘resolution’ - the clarity of the image is determined by the film size and quality used. 2001 was shot on 65mm Eastman film stock, so the ‘effective’ resol... | [
"url"
] | [
"url"
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kpy3e0 | How does sound travel during phone calls? How am I able to hear someone half way across the world but it sounds like I am sitting right next to them? | Technology | explainlikeimfive | {
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"text": [
"Sound travels in waves (usually through the air). When your vocal chords vibrate, it makes a pattern of waves in the air. If a speaker vibrates in that exact same pattern, it makes the same sound as your voice. The speaker vibrates either i... | [
"url"
] | [
"url"
] | |
kq00mc | When streams lag, why does the resulting images then look the way the way they do? | Technology | explainlikeimfive | {
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"gi1443i"
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"text": [
"To save data, streams usually work by sending *keyframes* (full images) periodically and communicating the *changes* to those keyframes rather than sending a full image for every frame. What you're seeing is the changes without a full keyframe. The outline of the player... | [
"url"
] | [
"url"
] | |
kq1kt0 | How do CPUs deal with dead transistors? | A CPU has billions of transistors, of which any number of them could be broken or not working - how do they continue functioning without these transistors? | Technology | explainlikeimfive | {
"a_id": [
"gi1irui",
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"text": [
"Welcome to the wonderful world of CPU binning. Have you ever wondered why Intel doesn't just make i7s? This is why. They try to make all i7s, say a 4 core CPU (not anymore but things have changed a little bit from this a 2 years ago because... | [
"url"
] | [
"url"
] |
kq1zdw | How cell phone connects to the tower. | Yes, I can't figure it how. I know that the tower has a big powerful antenna that can send signals to long distances and cell phones can pick them. But how does a cell phone connects back to the tower to transmit data over long-range without that powerful transmitter? | Technology | explainlikeimfive | {
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"text": [
"The tower also has a very sensitive receiver. That's the main gist of it. You don't need much RF power if you can \"see\" what you are taking to, which is why the cell towers are very tall, so low power is totally fine since the signal does... | [
"url"
] | [
"url"
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kq921s | How do we improve the tech of batteries? What is the difference between battery produced decades ago vs present vs future? | SmartPhone batteries from the last 10 years have progressed quite significantly, 4000mAh or more is now thr standard for many high end phones Ultimately we want batteries to store as much energy as possible, near perfect efficiency, as small as possible, as cheap and commercially available as possible. . How do we impr... | Technology | explainlikeimfive | {
"a_id": [
"gi2frxn",
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"text": [
"The main improvement of modern batteries is power density. The more power we can get from less mass the better. One of the new major limitations on batteries we have is cooling large batteries. We can make huge or super dense battery packs but we won’t be... | [
"url"
] | [
"url"
] |
kqb9er | How do they fill water towers? | Technology | explainlikeimfive | {
"a_id": [
"gi2sydt",
"gi32mdv",
"gi2s5s3"
],
"text": [
"A water pump. Most industrial/commercial pumps use a whirly thing to make water spin and go to the sides. They redirect the sides motions in the direction they want the water to go. The reason they have a water tower is that they can have t... | [
"url"
] | [
"url"
] | |
kqcclq | What's the difference between source code and the code you can find in the progam/files? | been seeing a lot of source code leaks lately and i don't really get it | Technology | explainlikeimfive | {
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"text": [
"Source code is made to be readable by humans, while the data in a typical executable (what you mean by 'program') is made to be readable by a computer's processor. For example, I m... | [
"url"
] | [
"url"
] |
kqcnxi | How does a diffuser work? | How does an (aroma) diffuser work? How does it create mist? And how is cold "steam" possible? | Technology | explainlikeimfive | {
"a_id": [
"gi37zyu"
],
"text": [
"Loooots of shaking on a liiiitle circle plate make the water break up so fast it turns it into a mist. Scented oils in the water break up as well and float around with those tiny water drops."
],
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3
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kqf4hj | What is cas latency? | Technology | explainlikeimfive | {
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"gi3fl4h",
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"text": [
"CAS Latency (CL) stands for Column Address Strobe. This is the number of clock cycles that pass from when an instruction is given for a particular column and the moment the data is available. In general the lower the CAS latency the better within a given ... | [
"url"
] | [
"url"
] | |
kqfegv | Why is it bad too sit close to a TV or PC while VR headsets are safe to sit centimeters from your eyes? | Technology | explainlikeimfive | {
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"gi3hjzm",
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"text": [
"TVs were dangerous when they had Cathode Ray Tubes that were shooting high-power electrons at you and relying on the lead in the front glass to stop and resulting X-rays before they fried your brain. That's not how they work anymore. You might get eyestra... | [
"url"
] | [
"url"
] | |
kqhd5f | How is it that a caller/telemarketer can call me, but if I try to call back, it doesn’t even ring and the line automatically disconnects? | I’m probably not describing this very well, but basically I get a lot of calls from unknown numbers and whenever I try to call them back, 99% of the time I don’t even get a dial tone— just a series of loud beeps and then the call suddenly ends. It just doesn’t make sense to me that someone can contact me from what appe... | Technology | explainlikeimfive | {
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"text": [
"You're likely not calling their real number, as they've spoofed the number that shows up on your caller ID. The new pattern by these telemarketers and fraudsters is to replace the calling number to something that you'd be more likely to answer from, like ... | [
"url"
] | [
"url"
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kqj4o5 | Why do internal search engines often do not work as you expect them to work? | Technology | explainlikeimfive | {
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"text": [
"Because building search algorithms that work *as you expect* is extremely hard. Google works so well because they invested unfathomable amounts of money into the development of their most-known core product, the search engine. Now just comp... | [
"url"
] | [
"url"
] | |
kqndo3 | How do Zero Click exploits work or manage to execute the code | How do these exploits manage to force the device to run the code? Can you really just send TCP or even SMS packets/messages with the messages in a way the device will run? I am very intrigued and worried about these attacks. Apple says they patch them but there are constantly new ones | Technology | explainlikeimfive | {
"a_id": [
"gi4tv0r"
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"text": [
"I mean data recieved at some point gets redirected to some application. Those applications do something when they recieve the data. Sometimes the application in question is the OS or your Messaging program or your 18+ XXX Minecraft server. A clever and patient person wh... | [
"url"
] | [
"url"
] |
kqp1av | How do people build computer components such as transistors that are nanometers in size and make billions of them in tiny chips to hold and read data? | Technology | explainlikeimfive | {
"a_id": [
"gi54v1h",
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"text": [
"Photolithography. (Literally: writing with light on stone). You print out the patterns you want on some glass then you shine light through the glass and through some lenses until you have a teeny tiny image projected like a projector onto some silicon wit... | [
"url"
] | [
"url"
] | |
kqr0z0 | Why do techs always 1st ask if we restarted the router? Why does that the most common fix to the issue? | Technology | explainlikeimfive | {
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"text": [
"A router is essentially a small computer, and like all computers, may develop issues after running for a while without a restart--maybe some application on it has a memory leak and starts running slow, or memor... | [
"url"
] | [
"url"
] | |
kqs1kp | why do newer smartphones reboot after changing a SIM card? | Technology | explainlikeimfive | {
"a_id": [
"gi5m8i9"
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"text": [
"Older phones you had to shut down before messing with the Sim, so the reboot was hidden. iPhones don't need to reboot because they don't utilise some sim card features like contacts storage."
],
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kqs73c | How does compressing a file work? As in how can you can a specific amount of data in the form of bits take less bits to have the exact file? | Technology | explainlikeimfive | {
"a_id": [
"gi5p500",
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"text": [
"Say I give you the following sequence of numbers, it's twenty digits long: `11111111444442222222` The sequence consists of eight `1`'s, followed by five `4`'s, followed by seven `2`'s. So you could code the sam... | [
"url"
] | [
"url"
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kqy3u9 | What is the clicking/creaking noise that a TV makes some time after it has been switched off? | Technology | explainlikeimfive | {
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"gi6cujj",
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"text": [
"Many electronics get warm while running. Thermal expansion causes the cabinet to increase in size. When you turn it off and it starts to cool the movement in the cabinet pieces is what’s making the creaking noises you hear. You can often hear similar nois... | [
"url"
] | [
"url"
] | |
kqz9pq | how do they know what IP address sent an email? | Technology | explainlikeimfive | {
"a_id": [
"gi6l1ys",
"gi6kk7j"
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"text": [
"* Emails have a lot of extra information that most email programs and services don't show you because most of the time you don't care. * This is called \"header\" information and it contains the IP address of the server that sent the email. * It also cont... | [
"url"
] | [
"url"
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kr6mf3 | What is the difference between an intel i5 and an intel i7? | Technology | explainlikeimfive | {
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"text": [
"There are 4 classes of \"i\" chips, the i3, i5, i7, and i9. the main difference is the amount of \"threads\" and \"cores\" a Core is the brain part of the CPU. a thread is like the two halves of a the brain. when the CPU is t... | [
"url"
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"url"
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krb8l0 | Why do 4k videos look better than 1080p on a 1080p screen? | Technology | explainlikeimfive | {
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"gi8xalv",
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"text": [
"If you're talking about online streaming videos (e.g. Youtube), the resolution isn't just the resolution but also affects the compression level. The 1080p version isn't a perfect detail 1080p video, it's compressed which adds some blurriness and stuff (bu... | [
"url"
] | [
"url"
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krc1xi | Why are laptop batteries so much more durable than phone batteries? | I get that the battery is probably like 10 times bigger, but we all hear the "Don't use your phone while it's charging that'll ruin it!" But I've never once in my life heard the "Your laptop's battery will be ruined if you use it while its charging!" Please keep in mind I don't know much about technology so bear with m... | Technology | explainlikeimfive | {
"a_id": [
"gi8y5yo"
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"text": [
"It used to be the case. Battery memory was a big thing back in days of yore. Even in laptops. The materials are the parts that wear a little funny when you charge and discharge at the same time. Modern electronics, even phones, have more durable deep cycle batteries, an... | [
"url"
] | [
"url"
] |
krcpl7 | how are VFX added to movies shot on film? | I'm not really sure how the shoot a movie on film then proceed to edit it / add visual effects and then release it. Digitally, for unprofessional people like me, we just take out the SD card, plug it into the computer, import the file into the software, do whatever then render it. When its shot on film, I don't get how... | Technology | explainlikeimfive | {
"a_id": [
"gi92c1k"
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"text": [
"You scan the film, so that you have an image of each frame. Then you compute your VFX to line up with the pixels in the frames. Then you print your VFX onto film. Then you can use multi-frame printing to get film for the scene. Or you do the composition digitally and pr... | [
"url"
] | [
"url"
] |
krfikn | How are law enforcement agencies able to retrieve data off of a device or sim etc. that has been erased/deleted, yet we cannot retrieve our own lost data? Isn't the point of erasing something to completely erase it... | Technology | explainlikeimfive | {
"a_id": [
"gi9l7fv",
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"gi9m1ti",
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"text": [
"You actually can recover it. You just need the right tools. It's the digital equivalent of the pencil trick, looking for fragments of data that may not have fully gone away, references in other files, etc that may help you re... | [
"url"
] | [
"url"
] | |
krjbx1 | what is the reason for REMASTERING old songs? Is that due to the newer and more advanced sound systems? | Technology | explainlikeimfive | {
"a_id": [
"gia9bs2"
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"text": [
"What has been already said, but exactly the reason why you think it woukd happen. Older songs that are extremely popular compared to ones that arent will get more album and singles sales. With the new advancements, of course the music industry is going to make a remaste... | [
"url"
] | [
"url"
] | |
krk6oq | ;How can http transfer video, audio and files not containing hypertext when it is a 'Hyper Text Tranfer protocol' | The wikipedia for http says ``` The Hypertext Transfer Protocol (HTTP) is an application layer protocol for distributed, collaborative, hypermedia information systems. ``` I searched the word hypermedia and it seems to be the extension of hypertext to include video, audio etc. But nowhere in the wikipedia it says that ... | Technology | explainlikeimfive | {
"a_id": [
"giac8wa",
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"text": [
"Are you asking how it actually works to transfer audio and video over http, or are you asking why the name is what it is?",
"Because while it's original purpose was to only transfer text, it was extended to support other formats, but the name remained... | [
"url"
] | [
"url"
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krmyyi | how do archaeology digging not damage artefacts or fossils? | Technology | explainlikeimfive | {
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"giauhle",
"gib58rh",
"gibghy0",
"gibjgwx"
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"text": [
"Initial discoveries can be made by normal construction activity that obviously is done with excavators and shovels, but when archaeologists are digging in an area known to contain artifacts they do their preparation. Dirt lay... | [
"url"
] | [
"url"
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krnah4 | Why do some apps stay open when you leave for 5 seconds but others take you back all the way to the starting screen? | Edit: Inspiration came from the Minecraft and Roblox app lol. | Technology | explainlikeimfive | {
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"text": [
"Imagine that apps are litte robots in your phone. They are all asleep in little bunk beds.... | [
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krs9la | Why does it seem like the last few 1 or 2 percent of a download, update, etc, take forever compared everything before it? Like if it takes 5 minutes for the first 98% the last 2% take 5 minutes alone! Why? | Technology | explainlikeimfive | {
"a_id": [
"gibw7y4",
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"text": [
"Imagine that you live in a tropical jungle and that you need a new bed, but the only shop is 2 km/1.2 miles away. Therefore, you send Bob, your friend, to get it. It is very easy to estimate how fast it would take Bob to go to the shop and come back, sinc... | [
"url"
] | [
"url"
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krss9e | How/why do electronics work? Like in the simplest terms, a bunch of metals are mashed together. How the heck does that create a computer/smartphone with insane capabilities? | Technology | explainlikeimfive | {
"a_id": [
"gibpgjz",
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"text": [
"Think of it like water through pipes forced by gravity and water pressure... As it travels through pipes, it can do work. Additionally, it can flip “switches” to change the flow. Using this principal, you can design logic gates and with those you can desi... | [
"url"
] | [
"url"
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krup8e | What are JPEG artifacts and why do they happen? | Technology | explainlikeimfive | {
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"gic0uf2"
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"text": [
"Compression finds patterns in data and and tries to represent them in as little space as possible. JPEG is also a lossy compression algorithm which allows for data loss. What happens then is that the image is broken into blocks and if colors are similar enough, they are... | [
"url"
] | [
"url"
] | |
ks08lv | How do sockets work? | If I have a fan plugged in to a socket and the socket’s switch is flipped on but the fan is not, is there still an electric current? And if the fan is switched on and put to a high speed would the electricity current be more than it would be on low speed? | Technology | explainlikeimfive | {
"a_id": [
"gid5ahp"
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"text": [
"you could imagine it like a water pipe. the wall socket is a tap and so is the switch on the fan. if it’s a two speed fan then the tap on the fan can open to let a small flow of water through or a larger amount. no water actually flows anywhere unless both taps are open... | [
"url"
] | [
"url"
] |
ks1y1v | What is a ROM header? | When I patch my videogame ROMs, sometimes they talk about something like "header" or "headerless"... I just bruteforce it tbh, if one patch doesn't work I just use the other one so, what Is a header? | Technology | explainlikeimfive | {
"a_id": [
"gidijjs"
],
"text": [
"So, in the computing world, a \"header\" is a block of data that comes before (at the **head** of) the actual desired data (being stored or transmitted) that basically provides information either necessary for the desired data (payload) to run, or information regarding ... | [
"url"
] | [
"url"
] |
ks4zm1 | why copying a software project is called forking? | Technology | explainlikeimfive | {
"a_id": [
"gie032w"
],
"text": [
"Think of it as a \"fork in the road.\" When you make a copy, you can make changes that aren't in the original. Anyone else that makes a copy can do the same, so mapping out where each copy came from creates something like a family tree. You could call it \"branching\" i... | [
"url"
] | [
"url"
] | |
ks844n | How can i create my own ".com"? | Technology | explainlikeimfive | {
"a_id": [
"giejcj3"
],
"text": [
"There's too much for me to explain. Here's a page that should tell you what you need to know. [ URL_0 ]( URL_0 )"
],
"score": [
4
],
"text_urls": [
[
"https://www.straightdope.com/21342911/in-internet-addresses-what-do-com-org-net-etc-mean-and-who-... | [
"url"
] | [
"url"
] | |
ks9rl2 | how does the tinted car mirror work when you fold it at a different angle | As title explains, some car mirrors can fold down a tiny bit giving you a more dimm or tinted perspective, how does this work? | Technology | explainlikeimfive | {
"a_id": [
"gietzfa",
"gieu836"
],
"text": [
"Here’s what my driver’s ed teacher told us.... When the mirror is angled normally, the light seen by the driver is coming from the mirror’s silver backing. At the same time, a tiny amount of light is also reflecting off of the front face of the glass but ... | [
"url"
] | [
"url"
] |
ksa0ta | why Japan become one of the two main centres of the video game industry. | Technology | explainlikeimfive | {
"a_id": [
"gieunv9"
],
"text": [
"It has a lot to do with why they also became a major technology power - a.k.a. the Postwar Economic Miracle. During the post-WWII years, Japan received heavy western investment, especially from the US. Combined with Japan not being involved in major conflicts directly a... | [
"url"
] | [
"url"
] | |
ksaybl | How did technology grow so fast only in the last 200 years? And especially enormously in the last 40 years? Did humans become more intelligent? | Technology | explainlikeimfive | {
"a_id": [
"giewxic",
"gieyrou",
"giexs5c",
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"giey3ca",
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"text": [
"Science builds upon itself. The scientific method itself is fairly recent, once we had a framework for us... | [
"url"
] | [
"url"
] | |
ksbkoh | Why is that when a phone's battery is old or damaged, it displays different battery percentage when it is switched on and when it is switched off? | I have a fairly old phone whose battery is in serious need of replacement and I've observed that when the phone is switched off, it shows a certain battery percentage, and when it is powered on, it shows a much higher percentage and drains away kuch faster too. Why is the battery showing different values when it's on a... | Technology | explainlikeimfive | {
"a_id": [
"giezwrh",
"gif8qbp"
],
"text": [
"Over time the batteries deteriorate and lose capacity, that's what your seeing, phone is trying to determine battery percentage and the battery isn't at the capacity it used to be. Someone else probably has a much more fantastic way of explaining this, bu... | [
"url"
] | [
"url"
] |
kscdbm | Why do TV signals seem to move? | We have an antenna. Why is it that one day we can have a great signal, and the next day that channel can be basically non-existent? | Technology | explainlikeimfive | {
"a_id": [
"gif5jaf",
"gif6cm6"
],
"text": [
"Weather more than likely. Rain, Clouds, even increased solar activity can interfere with the signal.",
"Weather mostly. Air pressure and humidity can bend the broadcasted signal away from your location. All the little water drops in the air can bend t... | [
"url"
] | [
"url"
] |
ksckc6 | how does the internet live forever and what would it take to completely shut it down and lose all archives of it | Technology | explainlikeimfive | {
"a_id": [
"gif51ph",
"gif53x0",
"gifq8pu",
"gifri03"
],
"text": [
"the internet is the set of connections between various computers. compare it to the network of roads in your country. you can block all roads leading to one specific city (\"Facebook-town\", \"Google-city\", whatever), but si... | [
"url"
] | [
"url"
] | |
ksf49b | Why are video file sizes so small? | A normal image stored on a phone is around 5 mb, if you calculate that way, a 1080p 60 fps video should be 60 frames X 5 mb X 600 seconds = 180000 MB= 180GB. But if you check a file size of an actual 10 minute video, it is only around 1GB. How can it be so small? | Technology | explainlikeimfive | {
"a_id": [
"gifjo3z",
"gigbnb0",
"gifmez2",
"gifk5z2",
"gifsk5i",
"gifktlf"
],
"text": [
"Video compression. The video file doesn’t store every frame, it just stores what changes between frames. Periodically there will be a full frame, called a “key frame”, just to reset everything bu... | [
"url"
] | [
"url"
] |
ksinn0 | How does hacking work? | Technology | explainlikeimfive | {
"a_id": [
"gig7500",
"gig8g5z"
],
"text": [
"Most hacking takes the form of social engineering--\"Hi this is the password compliance department, could you please tell me your password so I can check it for weakness?\" Usually it's more subtle than that, but you'd be amazed at how many people will ju... | [
"url"
] | [
"url"
] | |
kskgz7 | Why are numbers on a telephone keypad set out differently to a calculator keypad? | Technology | explainlikeimfive | {
"a_id": [
"giglr58",
"gigkflq",
"gigvl7o"
],
"text": [
"So back in the 50s, AT & T swapped from rotary to touch tone phones and they needed a pattern for the new keys. So they ran a study and tested 15 different layouts. Oddly enough, people preferred the telephone layout over the calculator lay... | [
"url"
] | [
"url"
] | |
kstfa9 | when you turn a cars engine on the speedometer and the rpm reader go all the way to the highest number, why? | A question is a question why tf are you downvoting | Technology | explainlikeimfive | {
"a_id": [
"gii0yee"
],
"text": [
"It’s a self test. It proves the gauges work. Same reason almost all the lights come on. It would suck for your engine to explode from no oil because the low oil pressure light was burned out. It’s a common feature on airplanes too. That’s why there’s a “master caution” ... | [
"url"
] | [
"url"
] |
ksypup | How does dust accumulate in an electric fans blades while they’re constantly moving fast in a circular motion? | it’s really been getting on my nerves the amount of times i have to clean this thing, how do they stick and accumulate on a fast moving blade? i’d greatly appreciate a response! | Technology | explainlikeimfive | {
"a_id": [
"gij7dg7",
"giiwopp",
"gijcik6",
"gijygwk",
"gikdbu2"
],
"text": [
"Hey, aerospace engineer here. There's a long complicated aerodynamic explanation but here's the short of it. ELI5: at the point where air meets the surface of the blade, the speed of the air is zero. Therefore,... | [
"url"
] | [
"url"
] |
kszjex | With 60 frames per second being my gaming default; Why do movies running at 24 frames per second look smooth to me but I'm easily able to classify games running at 30 frames per second as stuttering and slow? | Technology | explainlikeimfive | {
"a_id": [
"gij1i2y"
],
"text": [
"1. Cameras in movies are stationary most of the time. Movies start feeling stuttery when there are rapid camera movements. This is sometimes nauseating for me. 2. Movies have accurate motion blur, which makes it harder to notice the individual frames. 3. The intervals b... | [
"url"
] | [
"url"
] | |
kt1c7u | What is happening inside a computer's CPU that causes it to generate so much heat? | Technology | explainlikeimfive | {
"a_id": [
"gij8v6y"
],
"text": [
"Thousands upon thousands of electrical signals every fraction of a second roar through the microscopic circuits of a CPU. Moving electrical signals cause heat due to material resistance. So, things get very hot and require some sort of cooling mechanism."
],
"score"... | [
"url"
] | [
"url"
] | |
kt28vq | How does my phone differentiate between knuckle and finger touches? | My phone turns on the flashlight with a doubletap and takes a screenshot with a doubletap of the knuckle. I know the technology is called FingerSense but how does it work within the hard- and software? | Technology | explainlikeimfive | {
"a_id": [
"gijezi7"
],
"text": [
"FingerSense is a software-based solution that works using sensors many smart phones already have. It doesn't require any additional tech on top of those. For example, when you tap your phone with a knuckle, you cause more vibrations than when you touch it with a finger.... | [
"url"
] | [
"url"
] |
kt362i | What is a laser "made of"? | What is exactly a cutting laser (meaning the lasers used to cut stuff). What is it "made of" is we could say so and how does it work? | Technology | explainlikeimfive | {
"a_id": [
"gijjakt",
"gijjpla"
],
"text": [
"Laser stands for light amplification by stimulated emission of radiation The beam itself is literally made of light. With regards to a cutting laser, that light is focused and so intense that it melt, burns, or otherwise vaporizes what it hits. Have you e... | [
"url"
] | [
"url"
] |
kt3c5j | How does my car's A/C work for years and years - where does the burnt Freon (or whatever) go? | I have a five year old sedan, and the a/c has always worked fine. How can you burn Freon and not run out? I suppose this applies to refrigerators and all a/c's as well. | Technology | explainlikeimfive | {
"a_id": [
"gijk6cq",
"gijk91s",
"gijkk83",
"gijkmwl"
],
"text": [
"Freon doesn’t burn. The heat (or energy) in the cabin air in your car is used to convert the Freon into a gas, so the heat is pulled out of the air making it feel cooler. The Freon is then condensed outside the cabin of your ... | [
"url"
] | [
"url"
] |
kt4489 | why can't full computer memory be used? | Say I have 16GB of Ram on my pc, it will say 16.0 GB (15.7 GB usable). The same occurs with permanent storage. Why is that? | Technology | explainlikeimfive | {
"a_id": [
"gijp4uv",
"gijp61m"
],
"text": [
"It can be used, just not all by you. The computer needs to reserve parts for its own uses. As an example, some parts of the hard drive are used to tell the computer what's on the hard drive to begin with! Without that overhead stuff, the computer wouldn't... | [
"url"
] | [
"url"
] |
kt4als | What are drivers? | I’ve recently had to update some drivers on my laptop and I’m struggling to grasp how updating software can make the hardware better, it’s still the same graphics card in the machine, why do I need to update it to make it work? | Technology | explainlikeimfive | {
"a_id": [
"gijq07x",
"gijqdld",
"gijq6gs",
"gijqqbt"
],
"text": [
"Drivers are how we instruct an operating system to talk with a specific device that is attached. Rather than the OS know how to talk to each and every possible piece of hardware (like, say, every printer ever), it knows how t... | [
"url"
] | [
"url"
] |
kt4ltv | how do projectors make the color black on white screens? | Technology | explainlikeimfive | {
"a_id": [
"gijrmmp",
"gijryah",
"gijsjg4",
"gijt2i0",
"gijt31l"
],
"text": [
"They don't really, they just don't shine any light at that area. That means that the \"black\" will be the same color as the screen, which is why projectors only really work in dark rooms.",
"They don't - i... | [
"url"
] | [
"url"
] | |
kt5rss | Why is 16:9 the desired TV resolution scale, and why did it replace 4:3? | Technology | explainlikeimfive | {
"a_id": [
"gijzuma",
"gik17dh"
],
"text": [
"Turns out there isn't really a standard and there's not a great reason for what we have! No expert but I did just happen to watch Captain Disillusion's youtube video on just this topic. I'd recommend watching it [ URL_0 ]( URL_0 )",
"16:9 is not a res... | [
"url"
] | [
"url"
] | |
kt5zpo | What is the difference between a compiler and an interpreter? Why use one over the other? | Technology | explainlikeimfive | {
"a_id": [
"gik4pic",
"gik14ym"
],
"text": [
"Imagine you're vacationing in France, but you don't speak any French. You want to visit the Eiffel Tower today, and your hotel concierge has written down the directions to get there, but they're in French. You can solve this 2 ways. Your bilingual friend ... | [
"url"
] | [
"url"
] | |
kt6zn9 | how those "I'm not a robot" checks on websites work. | Technology | explainlikeimfive | {
"a_id": [
"gik64g7"
],
"text": [
"They're usually measuring how fast clicks happen and how the mouse is moving across the screen. A bot is usually programmed to \"snap\" or teleport instantly to the images or checkbox, and that's a giveaway that it's almost certainly not a human checking the box. Same t... | [
"url"
] | [
"url"
] | |
kt7chz | File type conversions | I was in the process of converting a .wav file to be used as a ringtone on my iPhone and the process struck me as odd. There were several conversions between the WAV and the m4r. I used an online conversion tool to convert to .aac, a separate process within iTunes to convert to .m4a then for the final step I was able t... | Technology | explainlikeimfive | {
"a_id": [
"gik8lk5"
],
"text": [
"Changing the extension on a file doesn't change the file type. For instance, if you the extension on a picture file from .png to .jpg, it's still a .png file. When you go to open it, the software will recognize that it's a .png file and display it as such. But no conver... | [
"url"
] | [
"url"
] |
ktdond | Why does a PC/Laptop continue to play music after unplugging headphones while a mobile pauses? | Technology | explainlikeimfive | {
"a_id": [
"gilie36"
],
"text": [
"Because that is how the software is programmed. On Android there is a specific setting to pause when headphones are disconnected so you can turn it off if you wanted. I assume iPhone has a setting but maybe Apple doesn't think users would want that sort of control. The ... | [
"url"
] | [
"url"
] | |
ktdopv | Why do people look ugly when they take pictures with their front cameras? | Technology | explainlikeimfive | {
"a_id": [
"gildkuj",
"gilgku5"
],
"text": [
"The cameras are usually of poorer quality than rear cameras but that's not the primary reason. The primary reason is front lens cameras are usually what we call wide angle cameras. This means they can see more around them (they are less \"zoomed in\") tha... | [
"url"
] | [
"url"
] | |
ktivxw | What makes a AAA battery different from a AA battery other than it being smaller? What’s the actual difference ? | Technology | explainlikeimfive | {
"a_id": [
"gimbmtv"
],
"text": [
"It's like the difference between a 5 gallon gas can, and a 1 gallon. They store the same thing, which burns the same, one just holds more. That said, there are different battery chemistries with different characteristics. But those are all available in both sizes."
],... | [
"url"
] | [
"url"
] | |
ktjbz1 | How are computers motivated in Q Learning? | I get that it uses a number going up and down depending on the behavior, but why does the computer/AI try to make the number go up? | Technology | explainlikeimfive | {
"a_id": [
"gime1m2",
"gimeg8j"
],
"text": [
"The goal is to maximize the reward. It’s explicitly told that higher is better. Nearly all machine learning is centered around maximizing our minimizing some target.",
"Computers don't want, or care about, anything until we give them a program that te... | [
"url"
] | [
"url"
] |
ktl0h3 | What are VPNs and how do they work? | Technology | explainlikeimfive | {
"a_id": [
"gimq2qn"
],
"text": [
"VPNs are often described as tunnels, but they're a bit more like a secret code. Think of the internet as being like the postal service. When you visit a website, your computer is just exchanging letters with a server (a sort of special computer) somewhere that holds the... | [
"url"
] | [
"url"
] | |
ktmzev | What does the specification chargers usually mean like Output: 5V=2A or 5V=6A MAX ? | I was looking at my One Plus Warp charger and I saw that the output says 2A or 6A at 5V. What does this exactly mean? Edit: I wanted to add some more info. When I charge my brother's mi phone(screen displays fast charging when I use mi charger at 5V and 3A) from my charger it doesn't show fast charging. So does the war... | Technology | explainlikeimfive | {
"a_id": [
"gimzuee"
],
"text": [
"The V rating describes the voltage. For most systems, this should *perfectly* match the rating of the thing you charge. If your phone charges at five volts, you want a 5v charger. The Amp rating is a limit. Your device should not exceed the charger's maximum amperage (c... | [
"url"
] | [
"url"
] |
ktnajw | How do radtio/tv station know how many people are tuned in ? | Technology | explainlikeimfive | {
"a_id": [
"gin1k4m"
],
"text": [
"I was a panel member for Nielsen. They give a small percentage of the public a device (that looks like a pager) that tracks most media consumption through an inaudible tone that is broadcasted on radio, TV, etc. They then multiply the numbers and there you have your rat... | [
"url"
] | [
"url"
] | |
ktnkse | How did Parler become an alt platform, with the name being a French word? | Technology | explainlikeimfive | {
"a_id": [
"gin3nol"
],
"text": [
"I’m sure that was not a mistake. It was created as a “free speech platform” due to some on the right believing they were being banned off of other social media platforms. Now whether this is true or not isn’t the question here, but it was at least advertised as such. “F... | [
"url"
] | [
"url"
] | |
ktqw91 | How do OS installers works if there isn't any OS that could manage applications in an empty computer? | Technology | explainlikeimfive | {
"a_id": [
"ginjcjx",
"ginjpvs",
"ginqr86",
"ginv7f3",
"ginj6ua",
"ginjgqn"
],
"text": [
"A computer has a thing called the BIOS built into its ROM. One of the jobs this has is to boot the machine--it can do this from the built-in hard drive, or a DVD-ROM, or USB key. Once it's booted... | [
"url"
] | [
"url"
] | |
ktsxmh | ; How do transition glasses work and why do they take so long to get back to normal after getting dark? | Technology | explainlikeimfive | {
"a_id": [
"ginzrg5"
],
"text": [
"Photochromic lenses work because there are silver [cations]( URL_0 ) embedded in the lens. When these cations are exposed to UV light, a chemical reaction causes elemental silver to form. Because this silver is visible and less transparent, the lens darkens. The chemica... | [
"url"
] | [
"url"
] | |
ktv36b | Why is Bluetooth still so inconsistent in regards to connectivity and pairing previously paired devices? | Technology | explainlikeimfive | {
"a_id": [
"gio8yof"
],
"text": [
"It's really nothing to do with inherent limitations of the technology, or with spectrum issues. A lot of devices have very good Bluetooth. It's mostly due to the fact that there are a buttload of devices using very cheap, poorly designed Bluetooth controllers, crappy an... | [
"url"
] | [
"url"
] | |
ktxicj | why do banks not process your payments on the weekends? For example, if I make a rent payment on Friday, the money isn’t withdrawn from my account until Monday. If it’s all electronic, why can’t they process it the next day? | Technology | explainlikeimfive | {
"a_id": [
"giomw9l"
],
"text": [
"In the U.S., the Federal Reserve is responsible for exchanging money between banks. They don't work weekends."
],
"score": [
13
],
"text_urls": [
[]
]
} | [
"url"
] | [
"url"
] | |
ku1luz | How come PCs can render 100 FPS in gaming, but it takes so long to render a single frame in blender | Blender is a 3d animation software thingy idk the exact terminology | Technology | explainlikeimfive | {
"a_id": [
"gipdet8"
],
"text": [
"Because games are cheating to bring you \"good enough\" as fast as it can and try to avoid as much work as possible whereas software like Blender spend as much time as they need (when configured to do so) to render the scene in as realistic, accurate way as it can in as... | [
"url"
] | [
"url"
] |
ku2kim | How does a computer create a 3D image? What are the inputs and how does the computer use them to output a 3D image for movies and video games? | Technology | explainlikeimfive | {
"a_id": [
"gipqgl9"
],
"text": [
"well the short answer will be maths. lots and lots of maths. to elaborate a bit: let's say you want to draw a cube. you can describe it (store in a file) as a bunch of points - (0,0,0), (0,10,0), (10,0,0), and so on, where numbers correspond to the vertices' positions o... | [
"url"
] | [
"url"
] | |
ku3le3 | Why does Kelly Blue Book decide what every single car is worth?? Why does Kelly get to set the price of cars?? | How does she know? Who is Kelly? Is there some complex math equation involved? Why does no one question what the Kelly Blue Book worth of a car is? Why does everyone go by it? | Technology | explainlikeimfive | {
"a_id": [
"gipqe6n",
"giptgm4",
"gipqvh9"
],
"text": [
"They don't decide it. They collect data on the prices the cars are selling for and average it.",
"When you buy a car you have to get a title for it at your DMV/probate office/etc. They record the sales price and sell that data. KBB and ... | [
"url"
] | [
"url"
] |
ku5ghc | How does Google know I’m not a robot? | Technology | explainlikeimfive | {
"a_id": [
"giq22n4"
],
"text": [
"well if it’s one of those buttons that just has “I’m not a robot” written on it, it tracks your mouse movement when you go to click on it. if it’s perfectly straight, you’re a robot. if it’s all wobbly then you’re a human."
],
"score": [
4
],
"text_urls": [
... | [
"url"
] | [
"url"
] | |
kudyq0 | Why are modern televisions no longer making that static sound characteristic of older televisions? | You know when you touched the tv screen and it would make those little static “cracks”, why newer TVs don’t make that sound anymore? What’s the technology behind that? | Technology | explainlikeimfive | {
"a_id": [
"girclzs"
],
"text": [
"Old style (cathode ray tube) TVs make the picture by firing a beam of electrons at the back of the screen which causes the phosphor coating to glow. This electron beam causes a static charge build-up which makes a tiny spark when you get your finger close to it. Newer T... | [
"url"
] | [
"url"
] |
kujup5 | How is a shirt consisting of, say, 90% cotton and 10% some other material made? How do they "blend" the materials during the actual stitching process? | Technology | explainlikeimfive | {
"a_id": [
"gisa92i",
"gisbjcp",
"githjtp",
"gisxvvj",
"gituuns"
],
"text": [
"They blend the materials during the thread making process, not during the shirt making process. So a thread is spun with a mix of fibers, and that thread is used to make fabric, and that fabric is cut and sewn ... | [
"url"
] | [
"url"
] | |
kun1fy | What is open source software? What is open source in general? | Technology | explainlikeimfive | {
"a_id": [
"gistawg",
"gistcba"
],
"text": [
"Open source means you make the code for a program available to anybody who wants it. They can look at it, see how it works, and if they want they can modify it and release their own version. This means you're very unlikely to make a lot of money from your... | [
"url"
] | [
"url"
] | |
kuo81x | Why can't you take out a hard drive (with bios lock) and just change the machine code of the hard drive to avoid the bios lock? | Technology | explainlikeimfive | {
"a_id": [
"git09hb",
"git0r4v"
],
"text": [
"The BIOS isn't stored on the hard drive. It's stored on the motherboard. Sometimes it is possible to remove the BIOS lock if you know what you're doing, but it's not neraly as easy as wiping a hard drive.",
"The hard drive and the BIOS are two differe... | [
"url"
] | [
"url"
] | |
kur8es | Why smartphone SoC drivers have to be updated so the Android OS can also be updated? | I just read an article where Samsung explains why they don’t upgrade their phone’s OS more than twice and basically they said it’s because of Qualcomm and Mediatek not updating their SoC drivers more than 2 years so why old drivers stop working? Might not be applicable here but I believe you can use drivers made for ol... | Technology | explainlikeimfive | {
"a_id": [
"gitw12o"
],
"text": [
"> Might not be applicable here but I believe you can use drivers made for old versions of Windows on the new version so why that’s not possible on Android? Simply put, you can't on Linux. Well, not out of the box. When there's a Linux Kernel update - as there always is ... | [
"url"
] | [
"url"
] |
kurxsa | How Windows time synchronization with server works? | Technology | explainlikeimfive | {
"a_id": [
"gittg0s"
],
"text": [
"Several organizations maintain atomic clocks which are the most accurate timekeeping devices we have, and are used as \"primary standards\" which we as people agree is the official time. Every once in a while, provided you are connected to the internet, windows sends a ... | [
"url"
] | [
"url"
] | |
kuu15l | what do the numbers on the toaster mean? | i’m sitting here losing my mind because i think 4 means medium | Technology | explainlikeimfive | {
"a_id": [
"giu4okp",
"giu76sz"
],
"text": [
"Honestly, they are usually thrown together so cheaply that 4 just means more than 3 but less than 5. If you want to know the right toaster setting, toast bread, if it's too dark, turn it down, if it's too light, turn it up. Repeat until the toast looks ri... | [
"url"
] | [
"url"
] |
kuv9fi | How often do pilots interact with ATC mid-flight? | I understand that pilots liaise closely with Air Traffic Control during takeoff and landing but I was curious as to how often pilots converse with ATC while the aircraft is cruising at 30,000 feet? I stumbled across a map of European Air Traffic Control regions and it got me reminiscing about a flight I took last year ... | Technology | explainlikeimfive | {
"a_id": [
"giubn1g",
"giulx0j"
],
"text": [
"As they enter different airspace that is controlled by different [TRACON]( URL_0 ) centers, they will announce their entry, and receive any necessary information. During their time in that airspace, they may be told to adjust course or altitude by the con... | [
"url"
] | [
"url"
] |
kuvkrb | Difference between NAT vs ARP? | Seems like both protocols translate requests from a public facing IP (say from a router) to the device on the network that requested it. What's the difference, and when is one used over the other? | Technology | explainlikeimfive | {
"a_id": [
"giudti7"
],
"text": [
"> both protocols translate requests from a public facing IP (say from a router) to the device on the network that requested it. This is wrong, actually. ARP is used within a network; NAT is used for cross-gateway (local network to Internet) traffic. The Address Resoluti... | [
"url"
] | [
"url"
] |
kuvqh0 | What are WhatsApp’s new terms and conditions and why is everyone freaking out about them? | Technology | explainlikeimfive | {
"a_id": [
"giuejdk"
],
"text": [
"It’s like having a best friend whom you once confided in, shared your photos and phone number with, and now that classmate is threatening you “I’m sharing your information with other friends of mine so that they can understand you better, if you dont like it, dont be my... | [
"url"
] | [
"url"
] | |
kuwdr9 | Where in the physical world do computers store information, and what physical form does said information take? When space is taken up on a hard drive, what exactly is happening? | Technology | explainlikeimfive | {
"a_id": [
"giuhtsz",
"giui0ra",
"giuivpq"
],
"text": [
"Depends on the storage solution. For Hard drives for exemple, an head will place magnetic fields on a platter. Two possible polarities, so two possible data, 0 and 1. All data will always be written as 0 and 1, because that's what your comp... | [
"url"
] | [
"url"
] | |
kuwg47 | How do companies like namecheap and godaddy own the right to sell you domain names? | Technology | explainlikeimfive | {
"a_id": [
"giujghg"
],
"text": [
"They don't actually \"own\" the domains you're buying, they act more like brokers. They are known as Domain Name Registrars. Internet Corporation for Assigned Names and Numbers (ICANN) is basically in charge of the internet and the virtual \"space\" it allows others to ... | [
"url"
] | [
"url"
] | |
kv2gz6 | Why does turning a device off, then turning it back on usually fix the problem with it? | Title | Technology | explainlikeimfive | {
"a_id": [
"givpr0i",
"givlsl3",
"givlmuu",
"givluh4"
],
"text": [
"Imagine you were driving somewhere and you took a wrong turn. All of a sudden your directions are all wrong. You could try to backtrack your steps and undo what happened, but if you could just teleport back to your starting p... | [
"url"
] | [
"url"
] |
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