Split (1)

train · 14k rows

q_id stringlengths 6 6	title stringlengths 4 294	selftext stringlengths 0 2.48k	category stringclasses 1 value	subreddit stringclasses 1 value	answers dict	title_urls listlengths 1 1	selftext_urls listlengths 1 1
9wacvr	Why, in this technologically advanced age, is there still such a long pause before "on scene" reporters/guests hear audio from the network studio?		Technology	explainlikeimfive	{ "a_id": [ "e9j6q0q", "e9j7vz5" ], "text": [ "Its actually an intentional delay. Its so they can quickly cut from that persons camera before something that they dont want to air on TV happens. On Scene reporters can often find themselves in dangerous situations and you dont want to air an war corresp...	[ "url" ]	[ "url" ]
9was03	Building a PC		Technology	explainlikeimfive	{ "a_id": [ "e9jart2", "e9jabjk" ], "text": [ "What he said^^ try and get a solid state drive if you can. They are more expensive, but that and a Graphics card for gaming and CAD are the most important things. Try for at least an Intel i5 processor. Minimum 8GB of RAM. The rest isn’t that important. [...	[ "url" ]	[ "url" ]
9wf8e0	How does Captcha security verification work. Why does it sometimes ask to click on images but other times directly goes through without any tests ?		Technology	explainlikeimfive	{ "a_id": [ "e9k5mpz" ], "text": [ "There is no single Captcha system. Basically any system designed to tell humans and machines apart automatically is a Captcha. Some are only designed to tell humans from machines. Others have a secondary function of also teaching machines. For example, when you're cli...	[ "url" ]	[ "url" ]
9wg0lc	Why are server CPUs not that good at playing games?	I know it is something about the number of instructions executed per second, which is slower. But most games utilize all the cores I have in my current CPU. So wouldn't having more cores be beneficial?	Technology	explainlikeimfive	{ "a_id": [ "e9kkd59", "e9kbq3b" ], "text": [ "Server cpus are a fleet of minivans, where as computer cpus are like 4 tuned racecars. If you want to deliver a lot of groceries in normal city driving, the fleet of Minivans will do it better. The 4 tuned racecars will eat up way more fuel, run hotter, a...	[ "url" ]	[ "url" ]
9wh4ft	How do lightning tracker websites work?	Sitting on the toilet just now during a thunderstorm and a huge bolt of lightning flashed outside that must have been 2-3 miles away. I was watching the live lightning map on [ URL_1 ]( URL_0 ) and the flash that just saw was on my live map within 10 seconds! How is it possible to track the sky on a global scale like t...	Technology	explainlikeimfive	{ "a_id": [ "e9l2fn4", "e9kkj72" ], "text": [ "/u/krystar78 describes the community data sharing, but as for the science: they use radio waves. The stations detect the VLF (very low frequency) radio signals emitted by lightning flashes, precisely measure the time the signal arrives, and use the speed ...	[ "url" ]	[ "url" ]
9wjori	How is DRM such as but not limited to Denuvo cracked?		Technology	explainlikeimfive	{ "a_id": [ "e9l5ybr", "e9l7axf" ], "text": [ "The simplest explanation from a man who knows very little about the subject Lines of code are used to trick and ignore the various if/then statements you have to pass in order to launch the game, some if/then statements are more complex then others.", ...	[ "url" ]	[ "url" ]
9wlgve	What is the difference between Cloud Computing and Web Hosting?	Fifteen years ago people who own dedicated servers or colocate their own servers for hosting websites. But nowadays more people are using Cloud for that. What is the difference? I notice web hosting charges a flat monthly fee but cloud charges differently. If I had a website is it better to use cloud or regular hosting...	Technology	explainlikeimfive	{ "a_id": [ "e9lkb5e" ], "text": [ "Imagine you live in an apartment. You might not always be using it, but it's still yours. Whenever you want to use it, you go to the same building, and open the same door, and you're back home. If you need to go across town, you drive a bit further. If you intend to hav...	[ "url" ]	[ "url" ]
9wljuk	Going from 720p to 1080p is quiet a drastic improvement, while the difference between 4k and 1080p is minor; Why?	I was curious as my new 55'' Samsung 4k TV is not much different in quality than my old LG 50'' 1080p TV.	Technology	explainlikeimfive	{ "a_id": [ "e9lkje0", "e9ltuei", "e9lk82c", "e9ltsna", "e9lkism" ], "text": [ "Imagine you have an infinite number of square cardboard boxes (pixels) to make a wall (your TV) Every box you stack is going to make a massive improvement in the visual size of your wall up until you start gett...	[ "url" ]	[ "url" ]
9wln18	Why is a movie file size smaller than what each frame would be if it was an image?	I know the question isn't worded very well, but I don't know how to word it better. I've heard an average 4K movie is around 40GB. An image with the average 4K resolution of 3840x2160 is around 23.7MB. If an average 24FPS movie was being played back with each 23.7-megabyte image, 40GB would be taken up in 72 seconds. H...	Technology	explainlikeimfive	{ "a_id": [ "e9llfkt", "e9llkv7", "e9lli5w" ], "text": [ "Compression works by basically reusing pixels from the previous image that haven't changed instead of loading a fresh pixel for every frame. For example, if a scene includes a shot of a blue sky, most of those pixels won't change between fr...	[ "url" ]	[ "url" ]
9wnark	is the speedometer on waze to be trusted?	When I align the speedometer on my car exactly at 120 km/h, waze says I drive 115 km/h? There always seems to be a difference of about 5 km/h. This makes me think I can't trust either my car's or Waze's speedometer. Also, how fast am I actually going? Which one is more correct?	Technology	explainlikeimfive	{ "a_id": [ "e9lwqn1", "e9lwtzv", "e9lxk20", "e9miqt2" ], "text": [ "Generally GPS based speedometers are considered to be more accurate. A number of factors can be at play with the physical speedometer in your car including gear ratios and tyre rolling circumference. Any variations especially...	[ "url" ]	[ "url" ]
9wnhbt	are external hardrives essentially bigger USB drives, or is there something that differentiates them		Technology	explainlikeimfive	{ "a_id": [ "e9ly05f", "e9ly613" ], "text": [ "From a user standpoint they operate the exact same. From a technical standpoint if the external drive is a solid state drive (no moving parts) it is effectively the exact same as a flash drive. If it's not a solid state then it reads and writes using a sp...	[ "url" ]	[ "url" ]
9wo4xr	Back in the day, US television used to look awful in the UK due to PAL/NTSC conversion. It doesn't any more. What's changed? Is the conversion obsolete for digital formats?		Technology	explainlikeimfive	{ "a_id": [ "e9m9gx0" ], "text": [ "In nearly all cases nowadays the video will be produced in a format much superior to PAL or NTSC and only converted to the target format for broadcast. With older video that was originally stored in NTSC, you can now do fancy digital processing that gives a much better ...	[ "url" ]	[ "url" ]
9wq5ky	How come we can't just filter out the salt and stuff from the ocean and have huge sources of fresh water?		Technology	explainlikeimfive	{ "a_id": [ "e9melhw", "e9mehke", "e9mepjj", "e9mksyd", "e9meqfr" ], "text": [ "We can. It's a process called [Desalination]( URL_0 ). The problem is that it is laborious, expensive, and/or time consuming to do.", "We can, it's called reverse osmosis. The problem is that it's very expe...	[ "url" ]	[ "url" ]
9wr413	How does a smart phone responds to a touch?		Technology	explainlikeimfive	{ "a_id": [ "e9mnvnr" ], "text": [ "The inside of the screen carries a small charge. Placing an object, like a finger, on the outside that can act as the second half of a capacitor and distorts the charge pattern. The position of the distortion can be traced by the circuitry to know what action to hairdre...	[ "url" ]	[ "url" ]
9wrwai	What is RCS messaging?	I have a pixel 3 and rumors are flying around that Verizon is going to support it here soon, what exactly is RCS?	Technology	explainlikeimfive	{ "a_id": [ "e9mu0wc" ], "text": [ "Imagine chats like iMessage, WhatsApp, and such. The features found in those is pretty similar to RCS's feature set . Unlike SMS, which is the default messaging service currently, RCS lets you send audio, real-time video chats, more than 160 characters, create group cha...	[ "url" ]	[ "url" ]
9ws4wh	why image files vary in size even when the picture resolution is the same		Technology	explainlikeimfive	{ "a_id": [ "e9mvig5", "e9mupv7", "e9mv542", "e9mv1uq" ], "text": [ "Images are built out of pixels, think of them as little building blocks that have a single colour. Resolution merely defines the height and width of the field that is filled with those little blocks. For example 10 blocks by ...	[ "url" ]	[ "url" ]
9wurie	A couple hosting Nintendo ROMs was just sued by Nintendo. How does google avoid lawsuits for the same content being uploaded to Google Drive?		Technology	explainlikeimfive	{ "a_id": [ "e9njvqx", "e9nfxh7" ], "text": [ "Liability for hosting copyrighted items is covered by the Digital Millennium Copyright Act. This act makes internet hosting providers immune to liability for hosting copyrighted content so long as they don't know that the content is infringing and follow ...	[ "url" ]	[ "url" ]
9wvt0x	How do finger print readers work on your phone?	Was just looking at back of phone trying to think how do finger print readers work. Usually the animation shows a picture of your finger print, but obviously your phone is not taking a picture... or is it?	Technology	explainlikeimfive	{ "a_id": [ "e9npbka" ], "text": [ "It's not a picture, not exactly. Most fingerprint readers nowadays are capacitive readers, kind of like the mechanism that drives touchscreens. But instead of merely detecting that the screen was pressed, there's an array of hundreds or thousands of capacitors which cre...	[ "url" ]	[ "url" ]
9ww36o	Why does slow motion video always look very dark?		Technology	explainlikeimfive	{ "a_id": [ "e9nqem8", "e9o5u3n" ], "text": [ "To make slow motion, the camera has to take more pictures in the same amount of time. This means the shutter has to open and closer faster, and it's open for a shorter amount of time. This means that less light gets in for each picture.", "Cameras wor...	[ "url" ]	[ "url" ]
9x0155	why can computer games run at 60+ fps (even in vr) with this IMMENSE amount of textures, polygons, physics and lighting, while rendering a single comparable frame in a 3d program takes many minutes (at best)?		Technology	explainlikeimfive	{ "a_id": [ "e9ofgvw", "e9ogwut", "e9oordg", "e9ofbcd", "e9oo608", "e9ojc2u" ], "text": [ "They can't. They bake their models to remove as many polygons as possible without making a visible difference, downscale the textures whenever possible, completely ignore the laws of physics in f...	[ "url" ]	[ "url" ]
9x2j2s	Why can't two phones just automatically connect when they're calling each other at the same time?		Technology	explainlikeimfive	{ "a_id": [ "e9p1pxi" ], "text": [ "The short ELI5 answer is because that's not how they work. When calling it looks to ring and can't be rung. If they're both calling they're both looking to ring, and can't be rung, so it doesn't work. The system could be different, but isn't, and the odds of a major c...	[ "url" ]	[ "url" ]
9x36o6	why Gameboy/GBC Pokémon game saves rely on a battery when newer ones don’t.		Technology	explainlikeimfive	{ "a_id": [ "e9p6j76" ], "text": [ "Back in the day, data was saved on the cartridge, which used volatile memory. volatile memory requires power in order to hold data (in a normal computer, this is like your RAM), hence the battery. If the battery dies, it won't hold data. Modern day electronics have room...	[ "url" ]	[ "url" ]
9x3btd	How does GPS jamming work? Like what the Russians did during the recent NATO exercise.		Technology	explainlikeimfive	{ "a_id": [ "e9p8w9l", "e9p9rrl" ], "text": [ "The same as normal jamming, they sent out a bunch of signals on the frequency that GPS satellites use to confuse the receivers- like trying to hear a code someone is telling you(The GPS signal) when someone is shouting in your ear(The Russian Jamming.) 01...	[ "url" ]	[ "url" ]
9x5fir	How do gloves with “touch” fingertips get recognized by touchscreens		Technology	explainlikeimfive	{ "a_id": [ "e9po7av", "e9prw6m" ], "text": [ "Screens detect your finger's through an electrical flow. If you hold a metal conductor like a key and tap your screen it will work ( But dont, you might scratch your screen.) Screen touch gloves just have a better conductor at the finger tips.", "Manu...	[ "url" ]	[ "url" ]
9x6iow	when polishing or sanding why do you start from corse and work down to fine?	I've watched a few videos where people are making something extremely smooth or shinny and notices they always change sandpaper grit and I started to wonder why is this needed. Can't you just use a fine grit for the whole process?	Technology	explainlikeimfive	{ "a_id": [ "e9pxb32", "e9pxbb6", "e9q14bh", "e9qd79k", "e9pxeqk" ], "text": [ "Your working out the deepest scratches as quickly as possible. If you start with a grit more fine than the deepest scratch it will take longer to remove the metal down to the depth you need.", "You could bu...	[ "url" ]	[ "url" ]
9x6y6t	Why do come car stereos only have Bluetooth for calls		Technology	explainlikeimfive	{ "a_id": [ "e9q3sd2" ], "text": [ "In the beginning, bluetooth was for headsets, so people you didn't have to spoil your fashion with dangling wires (and wired headphones are kind of a pain when wearing a suit or even a sport jacket). Later, bluetooth expanded to support near-music-quality audio. This is...	[ "url" ]	[ "url" ]
9xai2h	Why do computers have a blue screen of death?		Technology	explainlikeimfive	{ "a_id": [ "e9qol2m", "e9qomj7", "e9qouoh" ], "text": [ "It’s a simplified interface to explain why the computer failed. If it just shut off on you when it died, you might not know and might not ever do anything about it. The BSOD is a result of a quick diagnostic, providing an error code so you ...	[ "url" ]	[ "url" ]
9xb1wp	Could Space X Patent Reusable Rockets?	So I work in software and there are so many news stories about software patents being used to sue developers for basic things like "using Internet to send mail" level of obviousness. Why couldn't Space X have a patent to demand royalties / licensing fees from other rocket companies for any future attempts to make reusa...	Technology	explainlikeimfive	{ "a_id": [ "e9qt7cp", "e9qswve", "e9qsscd" ], "text": [ "> Why couldn't Space X have a patent to demand royalties / licensing fees from other rocket companies for any future attempts to make reusable rockets? The basic concept of wanting to reuse parts of a rocket for multiple launches isn't nove...	[ "url" ]	[ "url" ]
9xb9x7	can someone explains 40-80 rule in charging and how it works , please ?	can someone explain 40-80 rule and how anode & cathode works ? and what happens to lithium ion batteries during charging	Technology	explainlikeimfive	{ "a_id": [ "e9qx237" ], "text": [ "So the chemicals and components in a battery decay over time, and with extreme charge levels. Discharging more deeply, or charging to a higher level, both induce wear on the battery chemicals and the components, and over time, this will reduce the overall charge the bat...	[ "url" ]	[ "url" ]
9xbrk6	How does the Ext4 Filesystem work?		Technology	explainlikeimfive	{ "a_id": [ "e9qzp4n" ], "text": [ "Both NTFS and FAT is fixed designs which had all its featured set when they were designed and it is hard to add or remove features or change the behavior. However the EXT family of file systems were designed with extendability in mind. So the mandatory structures offer ...	[ "url" ]	[ "url" ]
9xbtcg	How are there graphic cards for specific purposes (e.g. mining)? What's their difference?	From my basic understanding, the perfomance of a graphic card (gc) is determined by two things: performance (operations per second), and memory (size and speed of access). Now, my understanding is that bigger and faster is always better, how come some gc can de better in games, but others better for mining or finding p...	Technology	explainlikeimfive	{ "a_id": [ "e9qzprz" ], "text": [ "Because they optimize it for different tasks. A gaming graphics card is designed to produce an 'acceptable' result on schedule to push out the next frame. The designers know that the effect will only be on screen for a fraction of a second, and as a result they design t...	[ "url" ]	[ "url" ]
9xccoh	Train windows that turn opaque and clear and then opaque again. What’s it called? And how does it work?	I first saw this in when I was on a train in South Korea and it drove me nuts trying to figure out how it worked. And I didn’t even know what those windows are called. Smart windows? Frosted windows? Opaque windows? If someone can answer this I would be really thankful, cause I’d finally be able to sleep at night. Lol.	Technology	explainlikeimfive	{ "a_id": [ "e9r59ve", "e9r56la" ], "text": [ "Electrochromic glass (aka \"smart glass\"). It's basically a giant LCD screen. When voltage is applied, the crystals all align in such a way that light can't pass through.", "[Smart glass]( URL_0 ). This can be used in windows, glasses, greenhouse...	[ "url" ]	[ "url" ]
9xclzw	How do sports announcers pull random factoids during live coverage?		Technology	explainlikeimfive	{ "a_id": [ "e9r6fu6", "e9r6k2h", "e9r6g8v", "e9rl86s" ], "text": [ "There are an orgy of supporting personnel that prepare these factoids for the commentators.", "They have a team of producers and statisticians that have done their research beforehand. They can relay the message to them t...	[ "url" ]	[ "url" ]
9xcndn	Why do computers become slower over time?		Technology	explainlikeimfive	{ "a_id": [ "e9r6v9h", "e9r6yg1" ], "text": [ "Several things. On an installation level, each program you install adds 'weight' to the operating system by giving it more tasks. These aren't always removed cleanly when you uninstall, which makes it important to reimage your computer about every year. A...	[ "url" ]	[ "url" ]
9xdbkc	getchar() and putchar() in C	I swear my head hurts. I'm trying to understand this since like an hour. & #x200B; I understand that getchar() takes input a character at a time, and that putchar() displays one character. I went to [this]( URL_0 ) website because people on stackoverflow keep shitting on me for asking stupid questions. Dont hate me red...	Technology	explainlikeimfive	{ "a_id": [ "e9rcqiy", "e9rczq3" ], "text": [ "So, basically this is saying take up to n characters from the file. If the file doesn't have that many, stop at the end. If it has more, still stop at 1000 because that is (presumably) the size of the statically allocated string. I'm not sure what you mea...	[ "url" ]	[ "url" ]
9xf80p	How do front facing "Virtual surround" speakers sound like they are surrounding me?		Technology	explainlikeimfive	{ "a_id": [ "e9s2od9", "e9rt1ep" ], "text": [ "The folds of your outer ear mean that sounds from behind you bounce off those folds before entering your ear. The effect of the extra bounce is that there's a short delay and that the frequency content gets modified. So we can instead modify the sound pla...	[ "url" ]	[ "url" ]
9xf8q6	Don't Open Source Softwares Basically Opens its Gate for Hackers?		Technology	explainlikeimfive	{ "a_id": [ "e9rul3n", "e9rw7xf", "e9rtewp", "e9rt7zb", "e9rzjp3", "e9sfec7" ], "text": [ "If your security is because no one can look at your code and understan how it work it is called [Security through obscurity]( URL_0 ) The problem is that id do not work. It has been rejected sinc...	[ "url" ]	[ "url" ]
9xfuy3	why does Google translate spit out completely crazy nonsensical things sometimes?	Things like this video: URL_0 (Not my video just an example of how google translate messes up sometimes)	Technology	explainlikeimfive	{ "a_id": [ "e9s2zzk" ], "text": [ "It's still very much in development. It's all automated, so there's going to be some nuances that don't carry over. What you're seeing here is basically what the Google Search engine was like circa 1999. Google Translate uses algorithms that are based on UN Transcripts....	[ "url" ]	[ "url" ]
9xg0w0	Is it possible to manually recreate a video image simply by knowing what it translate into in binary?		Technology	explainlikeimfive	{ "a_id": [ "e9s0l8f", "e9s19ng" ], "text": [ "Computers are just \"store numbers and perform math on them\" machines. At a conceptual level, there is nothing they do that couldn't be done with some paper and a pencil But computers operate on huge amounts of data very fast. So what they can do in a fr...	[ "url" ]	[ "url" ]
9xgc32	Why do so many websites feel the need to show a "This site uses cookies" disclaimer message?	This seems like a recent web trend that hasn't been around that long. So why are they doing this all of a sudden? What happens when you click agree? And what is the difference between that and just clicking the x on the message?	Technology	explainlikeimfive	{ "a_id": [ "e9s3v70", "e9s49cj", "e9sl4rr", "e9t1lyx", "e9te0f3" ], "text": [ "It's a recent requirement due to the implementation of the [General Data Protection Regulation \\(GDPR\\)]( URL_0 ) in the European Union (EU) in May 2018. One of the requirements of the GDPR is that websites w...	[ "url" ]	[ "url" ]
9xh21h	What is "portable" supposed to mean in Portable Network Graphics (PNG)?	I can't find any information by searching on Google	Technology	explainlikeimfive	{ "a_id": [ "e9se0eb" ], "text": [ "\"Portable\" here means that it is easy to implement to other computer platforms. Source: RFC2083 PNG is designed to be: * Simple and portable: developers should be able to implement PNG easily." ], "score": [ 7 ], "text_urls": [ [] ] }	[ "url" ]	[ "url" ]
9xjley	What are “shadow profiles” and what are the direct harms?		Technology	explainlikeimfive	{ "a_id": [ "e9svnon" ], "text": [ "In terms of social media, a shadow profile is when a company collects information about people who've actually never registered with that company's service and created a profile. But a company like Facebook can easily collect a lot of information on you anyway: it kno...	[ "url" ]	[ "url" ]
9xk1zu	Why is it so hard to make good counterfeit currency if there’s obviously a method of making real currency?		Technology	explainlikeimfive	{ "a_id": [ "e9sxexw", "e9sxkay" ], "text": [ "The paper used in US currency, and similarly for many other countries, is not used for other purposes, which makes it extremely hard to mimic the exact paper used. Security features within the paper itself are either expensive and/or difficult to mimic. W...	[ "url" ]	[ "url" ]
9xkeef	Why do many games have cut or unused content in their data?		Technology	explainlikeimfive	{ "a_id": [ "e9szokd", "e9t29mx" ], "text": [ "There are a couple reasons why a game may have 'cut' or 'unused content' in the game data. Sometimes, such as the older Pokemon games, they added data to the game files in bulk, and when they decided to not use some, it's more efficient to simply remove t...	[ "url" ]	[ "url" ]
9xkmq4	how exactly does Apple Pay work?		Technology	explainlikeimfive	{ "a_id": [ "e9t4z7s", "e9t2nkz", "e9ti0p2", "e9t3rla" ], "text": [ "When you pay with a modern chip card, the terminal will read the 16 digit primary account number (PAN) on the card, which is stored in the chip. During this kind of transaction, the payment is verified at the terminal either ...	[ "url" ]	[ "url" ]
9xm312	How can the EU hold American companies like Youtube liable with it's new copyright laws?		Technology	explainlikeimfive	{ "a_id": [ "e9tab8h", "e9taa7e", "e9tc3ip" ], "text": [ "When they do business within the eu they are bound by eu law and vice versa. There are also reciprocal agreements wrt copyright laws, such that we agree not to infringe things that have been copyrighted in each other’s territories within ou...	[ "url" ]	[ "url" ]
9xnsss	Why do special effects in movies and tv shows cost so much? Isn't it just using a program they already own?		Technology	explainlikeimfive	{ "a_id": [ "e9tnh1e", "e9tnl9x", "e9tpgv6", "e9tpiq4" ], "text": [ "Buying the program is cheap. Using it takes time. The time of many highly skilled people...", "special effects isnt just a \"program\". Things have to be custom made for every shot and frame. vfx artists need to create ev...	[ "url" ]	[ "url" ]
9xpkw6	Why and how do those thin cracks on the freeway concrete that run parallel to the dots and lines make my car swerve when my tire moves past or is running on top of it?		Technology	explainlikeimfive	{ "a_id": [ "e9u3z2z" ], "text": [ "Your tire is made of rubber and inflated with air. If part of the tire has air beneath it while the rest is pressed against the road by the entire weight of your car, that part above air will swell out, making the radius of the wheel bigger at that point. Bigger radius ...	[ "url" ]	[ "url" ]
9xq0qw	How does the ‘undo’ feature work on computers?	How does it (CPU) know the last used command? How does it know what command will undo the previously done command? In certain applications, how does it know to treat a series of commands as ‘undoable’, like deleting multiple words as opposed to single letters?	Technology	explainlikeimfive	{ "a_id": [ "e9u8gf8", "e9u8sa4", "e9u7jcl" ], "text": [ "\"Undo\" is typically not a function of the CPU, it's typically a function of the program or app you're using. The app keeps track of what you're doing, and the \"work\" is kept in the computer's memory, including the order of the steps or ...	[ "url" ]	[ "url" ]
9xrpte	How do sites like 1Password not create the problem they are trying to remove?		Technology	explainlikeimfive	{ "a_id": [ "e9unxdk", "e9urxsh", "e9uobrc" ], "text": [ "The problem they are trying to solve is people having to remember multiple passwords. For their system you only need to remember one password. So it is solving that problem.", "I can understand where your question is coming from: If...	[ "url" ]	[ "url" ]
9xtjxh	What does it mean when a computer crashes?		Technology	explainlikeimfive	{ "a_id": [ "e9v24m2" ], "text": [ "Computers follow orders, and they do it (for the most part) blindly. If an impossible order is given (like when you send it looking for something that doesn't exist), it crashes. Similarly if an infinite order is given (you can literally order your computer to loop infi...	[ "url" ]	[ "url" ]
9xw5af	how the hashing function works and generate hashes ?	i want to know how the hashing functions work ? and how it transfers the variable length of password to fixed length of hash ? for example (abc , abcdef,abcdefghi,...) will generate the same length of hash	Technology	explainlikeimfive	{ "a_id": [ "e9vtpj5" ], "text": [ "There are many different hash functions (infiniely many). A very simple (and verybad) one would be to simply cut off the input at the desired length and pad it with zeroes if it's too short. A somewhat better hash function for text is this (used e.g. by the Java program...	[ "url" ]	[ "url" ]
9xwmru	How does your clock keep working on your phone even if you run out of battery for weeks?		Technology	explainlikeimfive	{ "a_id": [ "e9vsexj", "e9vsk2k" ], "text": [ "Your phone updates it’s time when you connect to a cell tower. You can see this if you’ve ever crossed time zones out in the desert or whatever. Your phone will have the old time zones info until you get signal again.", "The clock circuit takes nanowa...	[ "url" ]	[ "url" ]
9xyjmy	Why do batteries lose charge when they haven't been used before or not for a long time?		Technology	explainlikeimfive	{ "a_id": [ "e9webkv" ], "text": [ "Because batteries are chemicals and for power is generated through a chemical reaction. Over time, the chemicals can break down and be less effective also the battery's chemical reaction will happen slowly even when not being used." ], "score": [ 8 ], "text_...	[ "url" ]	[ "url" ]
9xzdsb	How does an electron microscope work?	Exactly, that. How does an electron microscope work beyond the obvious that it uses electrons somehow to generate an image.	Technology	explainlikeimfive	{ "a_id": [ "e9wraht" ], "text": [ "Afaik: Electrons are smaller than light particles so it can read and get into smaller detail than light can. Imagine trying to figure out which side of a die your looking at by rubbing a tennis ball on it vs a sharp pencil. And then for the actual data: I'm pretty sure ...	[ "url" ]	[ "url" ]
9y307w	Why do passwords have an upper limit for length?	Why does password length matter? Aren't they just converted into a 32-, 64-, or 128-bit hash for storage? Is it due to the speed of the hashing function used?	Technology	explainlikeimfive	{ "a_id": [ "e9xrj8u" ], "text": [ "Real answer is developer preference, as past of the password dialog properties one must specify a max size but as you mentioned if the password is handled correctly it is used once and only the hash is stored. Since the hashing of the password is a relatively infrequent...	[ "url" ]	[ "url" ]
9y46ll	how do people even get STARTED with hacking like you see the professionals do it?		Technology	explainlikeimfive	{ "a_id": [ "e9y1pwl", "e9y2t4v", "e9y3dcg" ], "text": [ "Learn a language like python/java. Move on too ruby/C+/whatever you want. Get really good at that. Essentially all hacking is, is finding a weak point in coding. It's not like what you see on tv.", "Usually they get a job in network sec...	[ "url" ]	[ "url" ]
9y7kvk	How do we get such detailed, beautiful pictures of objects so much further away but Pluto was just a blurry blob until a year ago?		Technology	explainlikeimfive	{ "a_id": [ "e9z5tmq", "e9z3p6y" ], "text": [ "We may get beautiful pictures but they aren't exactly \"detailed\" in the same sense. Pluto is small and moving relatively quickly, and while we may get a seemingly detailed picture of a nebula the details shown aren't actually any more than with the pict...	[ "url" ]	[ "url" ]
9y88w2	How are porn sites able to identify certain positions/scenes within their videos and categorize them accordingly?		Technology	explainlikeimfive	{ "a_id": [ "e9zdab4", "e9zfo89" ], "text": [ "They’re tagged by the user uploading them, no?", "This is of course manually done by the people who upload it. It would easily be possible to program a bot for that. But humans are cheaper. Uploader do it for free for their own benefit." ], "score...	[ "url" ]	[ "url" ]
9y8k28	Why does the battery life of brand new phones crater after a few months?	This has happened with every smart phone I've e ever owned. For the first few months the battery life will be as advertised. After a few months the phone can't even make it through half a day. My type of usage remains the same. For instance, I recently got a galaxy S9. Used to last two days between changes. Now lasts a...	Technology	explainlikeimfive	{ "a_id": [ "e9zha10", "e9zin56", "e9zkg31" ], "text": [ "Batteries get worse and hold less charge the more you use them. So over time it can't store as much charge. You could also have a lot of background stuff happening information as you download more. Especially if you don't close stuff.", ...	[ "url" ]	[ "url" ]
9yco4q	If you censor private details from your puctures by blurring or adding a black box on top, could this ever be removed by person with a powerful computer?		Technology	explainlikeimfive	{ "a_id": [ "ea0gu9n", "ea0g8co", "ea0g785", "ea0mcep" ], "text": [ "Adding a solid 100% opacity color will hide anything underneath, and there's no way to retrieve that hidden information. Blurring can potentially be reversed.", "If you add a black box with 100% opacity, no. Image formats...	[ "url" ]	[ "url" ]
9ye94b	How is it that a USB cable/port can not only be used to transfer data between devices, but can also be used to charge a device?		Technology	explainlikeimfive	{ "a_id": [ "ea0rdu2", "ea0uwx5" ], "text": [ "The USB connector includes connections for power as well as for data, so that devices like mice and keyboards and storage drives and others don't need an external power source.", "Originally the USB included a bunch of connections to transfer data as ...	[ "url" ]	[ "url" ]
9yetfu	Why is the task manager so much “better” at closing applications when compared to the task bar? (or the close button)	I hope I was able to word this well enough...	Technology	explainlikeimfive	{ "a_id": [ "ea0v407", "ea0uutj" ], "text": [ "The task bar sends a polite request to the application to close itself. This works nicely most of the time, and is what you want. For instance it gives the application the possibility of asking if you want to save the current document, or to ask if you re...	[ "url" ]	[ "url" ]
9ygs7d	Why corn was selected as one and only crop surviving in those conditions in Installer Movie, Is there an explanation to it?		Technology	explainlikeimfive	{ "a_id": [ "ea1al8a", "ea1jdfk", "ea15mss", "ea1yhhm" ], "text": [ "Its a plot device. The movie is a US centric movie and wanted to invoke the good old corn farmer for nostalgia. If it has been soybean or rice, it would be harder to invoke audience connection to movie", "Everyone knows d...	[ "url" ]	[ "url" ]
9ym8lg	Why do phones and computers get slower over time?		Technology	explainlikeimfive	{ "a_id": [ "ea2f4hv", "ea2e2u4" ], "text": [ "They don't. Hardware remains exactly the same. What changes is the software. Software continues to progress, and part of the progress of software is that it demands more computing resources to do more interesting things for the user. When you put _new_ so...	[ "url" ]	[ "url" ]
9ymgr6	With technology generally moving pretty fast, why aren't [rechargable] batteries improving accordingly? Or are they and we're still pushing their limits?		Technology	explainlikeimfive	{ "a_id": [ "ea2gmlr", "ea2i99s", "ea2hc4z", "ea2j7la", "ea2nc0i", "ea2nmvo", "ea2nyor" ], "text": [ "They are improving constantly. Today's batteries are far better than those of 15 years ago, and many further technologies are growing in the labs. But frankly the chemistry is in...	[ "url" ]	[ "url" ]
9ymz3v	. How does the FCC’s approval of SpaceX launching 7,000+ satellites into orbit affect cell service and WiFi on a global long termscale?	SpaceX recently received approval from the United States Congress to launch over seven-thousand satellites into orbit to create a sort of global mesh for networking. How will that have an effect on cell service and WiFi providers like Verizon and Comcast? Will everyone on the planet have free internet by the end of the...	Technology	explainlikeimfive	{ "a_id": [ "ea2nwj9", "ea2kakw" ], "text": [ "> Will everyone on the planet have free internet by the end of the century? Likely no. But perhaps you can have internet access any where on earth with a good connection for a relative low cost. The network called Starlink cost money to operate and SpaceX...	[ "url" ]	[ "url" ]
9yn4xo	How does electrochromic glass work?	I sometimes see the occasional rich villain / antagonist in movies have these fancy windows that can change tint. I, more recently, noticed some videos and gifs of this and is it even real? If so, how does it work?	Technology	explainlikeimfive	{ "a_id": [ "ea2scbm" ], "text": [ "Oh boy did we luck out. Inventor/patenter of a Smart Glass technology here. Yes it’s real. You can even see some as your own personal villain on the Boeing Dreamlimer seats. There’s a lot of different kinds. 1. Electrochromic (EC) 2. Suspended Particle Device (SPD) 3. P...	[ "url" ]	[ "url" ]
9yn9h7	Why are CPU speeds measured in Gigahertz (GHz) and RAM in Megahertz (MHz) when they are usually similar?	For example, a CPU like the Intel Core i9 9900k has a base clock speed of 3.6GHz, or 3600MHz. A DDR4 RAM stick (for example) can have an operating speed of 3600MHz, or 3.6GHz. Why, then, do we measure CPU and RAM frequencies in different terms when they are already both similar?	Technology	explainlikeimfive	{ "a_id": [ "ea2o5ut" ], "text": [ "It was mostly marketing. In the days when CPUs started achieving GHz speeds, the “GHz” portion was heavily, heavily advertised as being ultra crazy fast! Look we don’t even measure it like those other puny CPUs! When GHz speeds came out, the CPU market was a fierce adve...	[ "url" ]	[ "url" ]
9ynf45	How do computer monitors scale lower resolution inputs and why does it look so much better than software scaling?	I was trying out some programs to make my old game, which has impressive 1024:768 as the biggest resolution in the settings, to run at my native widescreen 1080p resolution in letterbox mode (with black bars on the side, usually it's all just stretched put and ugly) so it would look cleaner and not mess up my system's ...	Technology	explainlikeimfive	{ "a_id": [ "ea2rlyj" ], "text": [ "It can. It just takes some carefully-crafted edge/sharpening filters and stuff like that. Here's a pic showing an example of what is going on: URL_0 So it absolutely can be done in software and it's used all the time, especially in old console emulators. Nearest/Linear/...	[ "url" ]	[ "url" ]
9yny8d	Difference between TAR and ZIP files?		Technology	explainlikeimfive	{ "a_id": [ "ea2uk54", "ea2th8e" ], "text": [ "A TAR file is a form meant for a Tape ARchive - it just stores the files and directory structure as one file in a standard format, no compression. A ZIP file is a newer format, combining compression and archiving. Most tar files will be served as .tar.gz ...	[ "url" ]	[ "url" ]
9yofju	Why is Windows NT so highly regarded and used in network IT to this day?	I asked a friend who couldn't quite communicate their reasons, other than that there hasn't been anything like it since? Surely Microsoft would try and make a similar product for networks?	Technology	explainlikeimfive	{ "a_id": [ "ea2xe8b", "ea2xotm" ], "text": [ "If you're still using Windows NT to this day then you have some pretty serious problems... It's certifiably ancient by IT standards. Windows NT is the platform upon which the follow versions of Windows were built. The NT Kernel laid the groundwork for wha...	[ "url" ]	[ "url" ]
9ys1vs	how does a gif or a jpeg lose pixels as it gets shared more and more? When you copy it doesn’t it copy the whole file?		Technology	explainlikeimfive	{ "a_id": [ "ea3khnj", "ea3kfph", "ea3kitr" ], "text": [ "A lot of social media sites run compression on uploaded images to save space on their servers. If you upload a picture to Facebook or Twitter it may lose fidelity. If someone then saves it and uploads it again, it may lose more. Editing and...	[ "url" ]	[ "url" ]
9ysc9a	By what mechanism do fitness trackers monitor sleep patterns?	Are fitness trackers an accurate way to measure sleep patterns? How do they work?	Technology	explainlikeimfive	{ "a_id": [ "ea3n5ak" ], "text": [ "Fitness trackers generally just use an accelerometer to detect motion in your sleep. Basically it detects how much you move at night. Stuff like a fit bit advertise they do it, but are generally considered pretty inaccurate and poor representations of sleep tracking, co...	[ "url" ]	[ "url" ]
9ysp4r	How does a phone know how much energy is left in the battery?	Does it measure the output voltage or something?	Technology	explainlikeimfive	{ "a_id": [ "ea3pdce", "ea3rgri" ], "text": [ "As a battery loses charge, it's output goes down slightly, and a phone is programmed to weigh it's current consumption rate compared to what the battery is putting out.", "It measures the voltage, yes. But voltage is an imprecise measure. On lithium b...	[ "url" ]	[ "url" ]
9ytj44	How does GPS work in poor weather conditions when satellite radio and TV don't		Technology	explainlikeimfive	{ "a_id": [ "ea3xvcp", "ea3y1ff", "ea401n2" ], "text": [ "In order for GPS to work optimally, your receiver needs to have 4 satellites connected (some models will indicate the number on the display). While less than optimum, you can get location with fewer than 4 satellites, but the accuracy will ...	[ "url" ]	[ "url" ]
9yuwx1	How do video game display mechanics work?	On my PC, FPS shooters (COD BO4) get's between 90 and 110 FPS. I understand how the eye works and all that Jazz. What I really want to understand is how things are updated FROM the PC side. How often is my characters information / position etc updated. By having powerful hardware I get the 110FPS, but is it actually gi...	Technology	explainlikeimfive	{ "a_id": [ "ea48k8r", "ea48v5n" ], "text": [ "This is highly dependant on the game. & #x200B; One semi-common option that some developer's do is tie the updates to the framerate (and lock the framerate when they do that). In those cases, you won't get a higher FPS with a better PC because the game is...	[ "url" ]	[ "url" ]
9ywes2	How did Nasa contact with Astronauts during the first Apollo mission without satellites? How did the frequencies work with that range?	I've looked online but couldn't figure out how these frequencies worked for them to radio each other.	Technology	explainlikeimfive	{ "a_id": [ "ea4ks2c" ], "text": [ "Really strong radios. You can keep adding power to make it reach farther and you can make really big antennas to hear a weaker signal. Because the earth spins, there are a bunch of places all over the world with the big radios and they take turns talking to the astronau...	[ "url" ]	[ "url" ]
9ywmng	How can Google search through practically all of the information in the world in only milliseconds?		Technology	explainlikeimfive	{ "a_id": [ "ea4mo0n" ], "text": [ "This is where indexing comes in. Whenever they scan a web site they will filter out the key words. Then they have a huge database where they will file the website under each of those key words. When you search for a word they can just go to that database and just instan...	[ "url" ]	[ "url" ]
9ywulu	why do phones charge faster from a lower percentage compared to nearly full?	It seems to take a much shorter amount of time to charge between 30% to 40% for instance, compared to 90% to 100%	Technology	explainlikeimfive	{ "a_id": [ "ea4qjr1", "ea4o6xg", "ea54b3s", "ea4o9cj", "ea4o6da", "ea4vshm" ], "text": [ "The stadium effect is in effect here. Imagine an empty baseball stadium that holds 60,000 people and outside are 60,000 fans waiting to get in. Those people are the electrons looking for a seat i...	[ "url" ]	[ "url" ]
9z1700	How do pedometers accurately count your steps?		Technology	explainlikeimfive	{ "a_id": [ "ea5qlt8", "ea5ky8x", "ea5rg2n" ], "text": [ "My pedometer has a GPS in it that alerts the police when I go within 200 meters of a elementary school.", "Simple answer is that it uses accelerometers and gyroscope sensors to count a step, a sufficient enough abrupt change in those se...	[ "url" ]	[ "url" ]
9z1byp	How do noise-cancelling headphones "cancel noise"?		Technology	explainlikeimfive	{ "a_id": [ "ea5lorb" ], "text": [ "Think of sound as it's often represented as a wave - up/down/up/down/etc The headphones listen for that and play the opposite: down/up/down/up - just the right amount that the ups and downs exactly cancel themselves out" ], "score": [ 18 ], "text_urls": [ ...	[ "url" ]	[ "url" ]
9z7jn0	Graphic card drivers or drivers in general?	What are bad drivers? What makes them bad?	Technology	explainlikeimfive	{ "a_id": [ "ea6xuef" ], "text": [ "Drivers are the programs your computer uses to talk to hardware. The computer wants to draw a blue circle, but doesn't necessarily know how to tell your fancy card from Nvidia. It tells the driver \"draw a circle\", and the driver tells the card. But wait! You replace y...	[ "url" ]	[ "url" ]
9z7tq0	What is meant by 16 Bit Resolution in terms of audio?		Technology	explainlikeimfive	{ "a_id": [ "ea70ez3" ], "text": [ "When audio is digitized the analog to digital converter is taking regular samples of the electrical signal at a certain resolution. For example it can take 44.1kHz samples at 16 bits. So every 1/44,100th of a second it measures the signal to one of 65,536 different valu...	[ "url" ]	[ "url" ]
9zaepj	Why is there an automatic margin on the body of an HTML document?	Why do I have to specify margin: 0;	Technology	explainlikeimfive	{ "a_id": [ "ea7okgt", "ea7kwpy" ], "text": [ "It's legacy. It stems back to the very early days of HTML, when CSS was not a thing yet. Back then people used to simply put plain text directly into the body (most pages back then were just purely text + links). In order to make the text not stick to the...	[ "url" ]	[ "url" ]
9zb0z3	how are traffic lights programmed, especially during rush hour?	I constantly see the traffic lights on main roads have equal or shorter duration than the road it crosses which has 10x less traffic.For example green light on main road might last 20 sec while the road it crosses has 30 sec. What's the logic behind this? This causes huge traffic jams on the main road while the...	Technology	explainlikeimfive	{ "a_id": [ "ea7u25g", "ea8cewh" ], "text": [ "Someone didn't do their job right, that's why it's not working well. Or...maybe the controller has switched over to a failsafe program to handle that one or more of the detectors are broken. It can be the failsafe program that is poorly written too. Theor...	[ "url" ]	[ "url" ]
9zce0f	Why the airplane's black box is orange and what does the black refers to?		Technology	explainlikeimfive	{ "a_id": [ "ea80j71", "ea8314a" ], "text": [ "Orange because it’s bright and easy to find after crush. Black box means you have no idea what’s inside until after you open it.", "Firstly, you'll never hear an aviation porfessional call them \"black boxes\" they're flight recorders, the term is use...	[ "url" ]	[ "url" ]
9zcnko	How do hackers know "where" to find their targets? For instance, if they want to steal some records that Chinese government keeps, how do they find out where to "go"?		Technology	explainlikeimfive	{ "a_id": [ "ea83zja" ], "text": [ "They create programs that sniff out security flaws they intend to exploit. Either that or they have a particular target in mind and work to crack that particular security, often with no luck, but occasionally with success. For ever 1000 fails, someone succeeds. You hear...	[ "url" ]	[ "url" ]
9ze72n	Is booting off live Linux distros considered a high breach of security?	It is relatively easy to access all files on most public windows PCs using a live ubuntu / archlinux distro on flash drives , even those with user protected passwords. Do most organisations put a high priority in restricting access to bios to disable booting from usb? , especially those without measures like bitlock en...	Technology	explainlikeimfive	{ "a_id": [ "ea8eeep", "ea8eidh", "ea8eh2e" ], "text": [ "If I have physical access to a computer, nothing you can do to the BIOS will slow me down by more than the minutes it takes me to remove your hard drive and plug it into a computer which I control. If you want data security, use disk encryp...	[ "url" ]	[ "url" ]
9zf33p	How can an original gameboy that has been sitting in storage for 6 years still have a full battery charge, while my old cell phone's battery is dead after a couple months?		Technology	explainlikeimfive	{ "a_id": [ "ea8n6w6", "ea8ufuh" ], "text": [ "Phones use lithium batteries. Lithium batteries are terrible. AA batteries last 30+ years without being touched", "Rechargeable Li-Ion batteries generally have a relatively high self-discharge rate. The battery protection circuit and the phone’s clock...	[ "url" ]	[ "url" ]
9zgq8g	On URL_0 , why does it seem like a human player with an ELO rating of 1200 is much better than a computer with an ELO rating of 1200?	Like do they use different criterias to evaluate the performances of human players vs AI players? I can easily beat a CPU with a rating of 1200 to 1400 but I can barely beat a human player with a rating of 1100.	Technology	explainlikeimfive	{ "a_id": [ "ea96u0q" ], "text": [ "I've not used URL_0 anytime recently, so not totally sure what you're referring to, but 3 ideas come to mind Are you able to see the number of games played? The bots might just be playing a larger number of games, with many of those being much weaker opponents, where th...	[ "url" ]	[ "url" ]
9zhg37	Why do phone charging cables start becoming loose after a while when plugged in?		Technology	explainlikeimfive	{ "a_id": [ "ea98y23" ], "text": [ "If you're talking about the common micro-USB cables, it's the two tiny springy wire things on the plug. They help keep the plug snug, but they can get flattened down over time. You can bend them back up a bit with a pin or staple to make them feel a bit more snug." ],...	[ "url" ]	[ "url" ]
9zjrh1	Why do video games need the original source code file to be further worked on or remastered? Why can’t this be extracted from a copy of the game?	I just look at stories about how the Silent Hill and Kingdom Hearts remasters fan into issues because they didn’t have the source code and wonder; why wouldn’t a copy of the game suffice?	Technology	explainlikeimfive	{ "a_id": [ "ea9ph5u", "ea9wdfr" ], "text": [ "Okay. So let's say that you want to bake a cookie just like the ones that grandma makes. You could try to eat her cookie, and then using your knowledge of baking sort of reverse engineer it, but it would be an incredible hassle and very hard to do. But if...	[ "url" ]	[ "url" ]
9zl0t5	why is i5 better as a gaming CPU than i7 ?	It's not like I would choose a VW Beetle instead of a Porsche 911 for racing. Is there a simple explanation why a gaming rig often has an i5 ? When I built my pc I just picked the (then) powerful i7 thinking it is all-mighty.	Technology	explainlikeimfive	{ "a_id": [ "eaa030q", "eaa08k6", "eaa0aam" ], "text": [ "It’s not that it’s better, it’s just that if you’re using the PC primarily for gaming, there’s no need for a high-end, expensive CPU, when the money you save could be put towards a more powerful GPU. Now, games are becoming more CPU intensi...	[ "url" ]	[ "url" ]
9zlyaw	How did separate civilizations develop the same tools & weapons?		Technology	explainlikeimfive	{ "a_id": [ "eaa7pzk", "eaa9rj7", "eaa82rh" ], "text": [ "It's a natural evolution of weapons as a theory. People figure out that using a stick hits hard. Using a sharp thing cuts. Using something heavy bashes. Then they combine the ideas. Stick with weight = hard bash. Sharp stick = more cuts. Sh...	[ "url" ]	[ "url" ]
9zmbty	What is Docker and Docker-Compose		Technology	explainlikeimfive	{ "a_id": [ "eaaf3pc" ], "text": [ "Imagine you throw a party. To party like ELI5 you need soft drinks, popcorn and music. You could buy Magical Party Maker 2000 (MPM2k) which does all this stuff and more. Or you could buy soda machine, popcorn popper and bluetooth speaker. Problem with MPM2k is that * ...	[ "url" ]	[ "url" ]
9zmqoe	the difference between one-way SSL authentication and two-way SSL authentication		Technology	explainlikeimfive	{ "a_id": [ "eaafbol" ], "text": [ "One way: the server has a certificate signed by a certificate authority, and a private key which it uses to sign this certificate. The client has the root certificate authority's certificate as well, which it can use to validate the server's certificate. Two way: same a...	[ "url" ]	[ "url" ]
9znvml	How do companies like AMD, Intel, NVidia etc make better cores?		Technology	explainlikeimfive	{ "a_id": [ "eaaolny" ], "text": [ "Further research into computer technology sees the transitor (a key part of a processor) getting smaller and smaller, from 22 nanometers, 20, 16, 18, 14... As long as we are still able to shrink the transistor (until it gets too small for the basic principles of to work...	[ "url" ]	[ "url" ]
9zoiyh	How was it possible to build those highly accurate CNC machines we have today?	As the questions in the title says, how could we build those higly accurate CNC machines (or any other manufacturing machine) to that accuracy, assuming you need accurate machines to machine the accurate parts for the accurate machine? Was it some kind of „make 10 parts, take the best one“ and repeating this and gainin...	Technology	explainlikeimfive	{ "a_id": [ "eaasb1e", "eab1jrj" ], "text": [ "One of the most important parts of how very high precision machine tools are made is the fact that clever design allows relatively inprecise parts to be assembled into a machine that can make a more accurate part. A pretty good example of this is the micr...	[ "url" ]	[ "url" ]
9zpdmc	How does the algorithm of the DVD corner logo work.	[ URL_0 ]( URL_0 ) & #x200B;	Technology	explainlikeimfive	{ "a_id": [ "eaazdbw" ], "text": [ "The object moves according to a vector. Upon hitting a boundary the direction of the vector is adjusted while magnitude stays constant. Eli5 version: Throw a ball against a wall like handball. Programmers recreated that motion in software with the added property that th...	[ "url" ]	[ "url" ]

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