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 |
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9tlnfh | How exactly does porting a video game work? | Technology | explainlikeimfive | {
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"text": [
"Former game developer here, Video games today are written in C/C++, which are the \"lowest level high level languages\" around, because they offer enough abstraction to be useful and they compile to something quite performant, with care. Regardless, these... | [
"url"
] | [
"url"
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9tpqo1 | How can a cellphone mark the right time even without internet connection and after being turned off? | Technology | explainlikeimfive | {
"a_id": [
"e8yhb8k",
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"text": [
"Ever notice how phones never have an off *switch,* something to actually break the electrical connection, but always a button? A phone that is off is never actually off, not completely. Just like when you're asleep you're not dead, just in a low-energy re... | [
"url"
] | [
"url"
] | |
9trn5f | By what method does raw computer code get "translated" to the stuff we see on-screen? | Technology | explainlikeimfive | {
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"The code that programmers write is considered \"high level\". It's written in a computer language that makes sense to humans. Then it goes through an optimizer that checks through it to see if it can be reduced down to a less... | [
"url"
] | [
"url"
] | |
9ts1wk | How are things like Charlie Brown cartoons animated? | They didn't have 3dsMax or Maya back when things like "Snoopy come Home" or "It's the great pumpkin Charlie Brown" came out, so how did they animate those? | Technology | explainlikeimfive | {
"a_id": [
"e8yqw51",
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"text": [
"Animator here. For the whole 20th century, most cartoons were drawn one frame at a time on paper first; then those drawings were traced onto individual sheets of clear plastic with black ink (coloured in by painting on the other side)... then those sheets... | [
"url"
] | [
"url"
] |
9tsjhn | How the hell were movies edited in the 1900s? | I’m pretty sure computers came way after the first silent movies, so how did they put different scenes together? The first movies were around the late 1800s. HOW? | Technology | explainlikeimfive | {
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"text": [
"They cut the film, stuck it back together, and wrapped the cut in clear tape. That's where the terms come from. Like, they used scissors. On the physical film. You do know that the reel that's still used in logos used to be h... | [
"url"
] | [
"url"
] |
9tt51j | How do automatic sinks pick the temperature? | Sometimes they're spot on, and sometimes the water comes out boiling. I just want to know why they hate me. | Technology | explainlikeimfive | {
"a_id": [
"e8yw7vw",
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"text": [
"There's a knob or lever for setting the temperature on the side of most of them. Whoever used it before you picked their preferred temperature. The ones that don't have this I assume have the exact same system but with a hidden and/or tool-... | [
"url"
] | [
"url"
] |
9ttvar | How do the recaptchas work where you click on them and they swirl then decide your not a robot without you doing anything? | Technology | explainlikeimfive | {
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"e8z1x91",
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"text": [
"As well as what the other guy said, some captchas will track mouse movement over the captcha box. If your mouse pointer moves smoothly, not in a direct straight line, and pauses before clicking then you're much more likely to be human than ... | [
"url"
] | [
"url"
] | |
9tvr0m | difference between class composition and inheritence in C++? | Technology | explainlikeimfive | {
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"text": [
"A class is a composition of data (fields) and functions (methods). The name of the class is used to describe the type of variables which are instances of this class. So if we have a class called A and it has a field on it which is of type B (where B is an... | [
"url"
] | [
"url"
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9tvzbp | What's the difference between PC's that became standard in 90's and likes of Amiga , Commodore? | Technology | explainlikeimfive | {
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"e8ziw8a"
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"text": [
"The PC that we consider standard is the IBM PC, a computer that was initially no different than the Commodore 64 or the Sinclair Spectrum in terms of it being a home computer incompatible with computers made by other companies. It became standard because it was easy to ... | [
"url"
] | [
"url"
] | |
9ty0sl | why the weather/wind affects my digital TV signal | I use a digital antenna to watch TV. How come the signal gets choppy or gets lost completely when it gets windy/stormy? | Technology | explainlikeimfive | {
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"e8zz0l7"
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"text": [
"I don't know of any way that wind would affect your signal. Unless you are near a bunch of trees and the tree branches are moving in the wind, changing how the radio signal is being blocked/reflected. But rain certainly can. Rain can both block the radio signal and caus... | [
"url"
] | [
"url"
] |
9tyzl6 | Why are cellphone cameras more secure than computer webcams? | At various workplaces, they'll make you cover up the computer webcam but not your work cell phone. People have told me that phone software is more secure than computer software, but it's not clear to me why. | Technology | explainlikeimfive | {
"a_id": [
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"text": [
"In general most computers can load and run software from anywhere. Although this is what makes them great it makes them much easier to hack vs a device like a smartphone that can only run software from the app store. Phone software also use... | [
"url"
] | [
"url"
] |
9tzk9l | How did early Mesoamerican peoples, like the Inca, grow crops in the high Andes mountains? | How did they grow crops whilst living in the mountains? | Technology | explainlikeimfive | {
"a_id": [
"e90bemy"
],
"text": [
"By growing crops that were native to the area. They didn't eat stuff that would grow well in the fields of Nebraska. For example, the corn that ancient Central American people grew would generally not be recognized as corn by people in industrialized countries today exc... | [
"url"
] | [
"url"
] |
9tzxgi | How can my cellphone record and post nearly 4K video but CCTV cameras at legitimate businesses(banks, schools etc.) have such poor quality? | I’m new here and not trying to troll. I’m also very familiar with cellphones. However, after watching this episode of Dateline I don’t understand how I can record and post near professional grade videos with my phone, and the cameras outside of legitimate businesses(banks, doors to apt complex’s, schools, etc) have suc... | Technology | explainlikeimfive | {
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"text": [
"Try to make a 24h 4K video with your phone. You will have a little problem with the storage capacity. To be able to work with less storage you could loop the video, but at least a few hours should be stored in the loop. In 4K... | [
"url"
] | [
"url"
] |
9u3hpw | How come plane windows stay so clear, even at high altitudes? | Technology | explainlikeimfive | {
"a_id": [
"e9161na",
"e915kji"
],
"text": [
"Ok so in order for the fogging effect to occur there has to be a degree of humidity. Outside the aircraft there is very low humidity because of the altitude (but still some as if you look you can spot small ice crystals on the window sometimes). Inside th... | [
"url"
] | [
"url"
] | |
9u4wuh | what logic circuits are in Real life? | Technology | explainlikeimfive | {
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"e91k17q",
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],
"text": [
"You build computer with logic circuits in hardware. The thing you do in software can be represented with local operation. Look at URL_3 to see how you build a adder of binary number with logical gates. Logical gates are made by connection transistor toget... | [
"url"
] | [
"url"
] | |
9u4ymd | Help further this analogy about how computer parts work together? | Here's the analogy so far, based on older posts I found on ELI5 about this: \- The CPU is a person working \- Their desk is the RAM - the more RAM you have, the bigger desk to put stuff on. \- A bookshelf or filing cabinet is the storage (hard drive or solid state). \- The GPU is another person at another desk who can ... | Technology | explainlikeimfive | {
"a_id": [
"e91j6jb"
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"text": [
"This is the danger of taking an analogy too far. You've really gone off the deep end here. The analogy is pretty accurate for an entry-level understanding of what does what in a computer, and loosely how it all works. An additional core IS a lot like hiring another work... | [
"url"
] | [
"url"
] |
9u51f8 | What is Kubernetes and how does it relate to the cloud? | Technology | explainlikeimfive | {
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"e91kary"
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"text": [
"Kubernetes does containerization. What does this mean? Well, it lets you isolate software. Instead of having a server with 10 programs installed you can have 10 containers. This means i.e. that a malfunctioning program doesnt bring down the rest. It also means you can e... | [
"url"
] | [
"url"
] | |
9u5bto | How does HDR work in newer TVs? | Many newer TVs are advertised with HDR technology. Wasn't the contrast between black and white always there? sometimes as high as 1:10,000? What is HDR and how does it really work? is it technologically difficult to implement? | Technology | explainlikeimfive | {
"a_id": [
"e91kvs1",
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"text": [
"Basically it means that there is more detail displayed in the shadows and highlights before they are completely lost to pure black and pure white.",
"Contrast. Giving a Higher Range means you get bigger contrast between the darkest dark and the lighte... | [
"url"
] | [
"url"
] |
9u66va | How are such vast (RDR2) gaming worlds created? | Technology | explainlikeimfive | {
"a_id": [
"e91s14w"
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"text": [
"That’s a question that requires a long answer. Short answer, some games use procedural generation (that draws assets from a library) and some hand place everything. Some do a mixture of both."
],
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5
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9u8aj0 | How do whetstones work? | Like I get the basic idea that they sharpen stuff, but I watch this one guy on YouTube who makes knives out of crazy shit (y'all probably know the one lol) and he uses all these whetstones but I just don't get what it actually does? I get that there's probably different friction and stuff depending on how fine it is, b... | Technology | explainlikeimfive | {
"a_id": [
"e92cdww",
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],
"text": [
"You know when you sharpen your wood pencil it gets shorter because the sharpener just shaved off bits until the dull part is pointy? You get pencil shavings after you sharpen a pencil. Whetstones grind or shave off parts of a metal knife to... | [
"url"
] | [
"url"
] |
9u8sgf | what does it mean when a song is "remastered" ? | Watched Bohemian Rhapsody a few days ago and what a movie. Was always a fan of Queen but now I'm really into their songs after the movie. Several of them are "remastered," and not just theirs, but a bunch of songs by other old bands. What exactly does it mean? What makes a song be remastered? | Technology | explainlikeimfive | {
"a_id": [
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"text": [
"It just means that they go back and remove any flaws in the audio (bad edits, mic noises, hiss, etc)",
"URL_0 Re-recorded using “better” technology than what was originally used. Removes the pops, snaps and general distortion that was r... | [
"url"
] | [
"url"
] |
9u9n4n | Why do phones/computers/TVs need to have a glass screen? What would happen without one? | Technology | explainlikeimfive | {
"a_id": [
"e92mzx1",
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"text": [
"For phones, glass is hard and will not scratch easily in your pocket. Monitors and TVs usually aren't glass.",
"They don't need to be glass since we don't use CRTs anymore. The alternative is polycarbonate or some other plastic, but glass is the best ... | [
"url"
] | [
"url"
] | |
9ualmk | What is this drama about Diablo the game? | Technology | explainlikeimfive | {
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"text": [
"Everyone was excited for the next generation of pc and console games, we've been hearing rumors and speculation and seeing lots of jobs posted from blizzard. We knew it was a Diablo title and what we ended up getting was a mobile game. The vast majority o... | [
"url"
] | [
"url"
] | |
9ub9yc | I got a sextortion email from my own email | Technology | explainlikeimfive | {
"a_id": [
"e930fm8"
],
"text": [
"You know how when you write snail mail and send it through the USPS or the like? Well imagine in the return address field you put the address of the person you were sending the mail to. Email isnt much different. By default email really provides no protections or verifi... | [
"url"
] | [
"url"
] | |
9ubb1g | How is Blizzard able to manipulate the votes on its Diablo Immortal videos and how is this not a violation of Youtube's terms of service? | How is Blizzard able to manipulate the votes on its Diablo Immortal videos and how is this not a violation of Youtube's terms of service? The system seems fairly straightforward to me... how can they just make votes (hundreds of thousands) disappear? If they are changing the votes, how are they able to do this without ... | Technology | explainlikeimfive | {
"a_id": [
"e930fsy",
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"text": [
"A definite possibility is that the votes themselves were put there by botnets at the hands of very angry fans, making the votes the actual ToS violation and their removal the rectification thereof. Either that or reuploading it I guess.",
"Blizzard al... | [
"url"
] | [
"url"
] |
9ubj28 | How can a current gen processor be significantly faster than a five year old counterpart, while they have the same number of cores(physical an logical), same frequency and the major instruction sets are the same? | What plus can it put down to the table to be that much faster? | Technology | explainlikeimfive | {
"a_id": [
"e931f1m",
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],
"text": [
"More precise manufacture, better architecture; shorter distances for data to travel, less resistance, lower voltages, higher clock cycles, less heat",
"It has to do with the efficiency and architecture of the transistor layout. It's ver... | [
"url"
] | [
"url"
] |
9ubp1i | why the enigma machine used in WW2 was so hard to crack? | Technology | explainlikeimfive | {
"a_id": [
"e9332tx",
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"text": [
"By modern standards, it really wasn't. The computer they used to crack it ran at something like 25kHz, less than 1% of 1% of the phone or computer you're reading this on. Without an electronic computer, though, running throug... | [
"url"
] | [
"url"
] | |
9uc0rs | What happens to lost or abandoned nukes? | Throughout history a small number of warheads have been lost or stolen, at least one of them in the ocean. What will happen to these devices over time? Is there a risk that decades or centuries of neglect could cause a lost warheads to explode? Leak it's radioactive contents into it's local environment? | Technology | explainlikeimfive | {
"a_id": [
"e934m3v",
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"e94uz6v"
],
"text": [
"> Is there a risk that decades or centuries of neglect could cause a lost warheads to explode? No. To make a nuclear bomb go off you have to shove one piece of radioactive material into another very hard. > Leak it's radioactive contents in... | [
"url"
] | [
"url"
] |
9ucrd2 | Why do bug companies base themselves in California? | I was watching the Social Network and one character urged another to base themselves in California. Why do companies like to operate themselves out of California and why is there so many there? | Technology | explainlikeimfive | {
"a_id": [
"e93awx1"
],
"text": [
"(bug companies?? Bug companies???) Anyway assuming your question is about _big_ companies then your point is pretty flawed 1. Facebook _wasn't_ big at that point? They were just a small company 2. Most of the US's biggest companies aren't based in California! [The top 1... | [
"url"
] | [
"url"
] |
9udl2n | We have an air drying unit attached to our air compressor at our shop. The pipes bringing air in air normal. The pipes bringing air out of the unit are rusted, what causes this? Shouldn’t it be reversed? | Technology | explainlikeimfive | {
"a_id": [
"e93eyz6",
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"text": [
"When you compress air, you take a large volume of air and make it smaller. That small volume of air still has the same amount of water in it as when it started. When it cools, that water will condense and settle out The air dryer is used to get most of th... | [
"url"
] | [
"url"
] | |
9ujexp | We sent voyager 1 from earth in 1977 hoping another civilization will find it and decode the disc on board. How are we looking for similar things an intelligent civilization may have sent our way? | Technology | explainlikeimfive | {
"a_id": [
"e94q962",
"e94qhly",
"e94r5tq"
],
"text": [
"There's almost no way we'd detect an unpowered voyager-sized alien probe flying through the solar system from interstellar space due to the small size and immense speed. In fact, we barely detected a 600+ foot long interstellar object for t... | [
"url"
] | [
"url"
] | |
9uk0hl | why pictures of computer screens have weird, changing patterns when you zoom in and out? | An example is [this picture. ]( URL_0 )The black and white patterns change and I’ve never known why. | Technology | explainlikeimfive | {
"a_id": [
"e94uwiq"
],
"text": [
"These are called [moire interference patterns]( URL_1 ) and are caused by non-uniformly sampling the grid of pixels on the screen. In computer graphics, we use [mipmaps]( URL_0 ) to combat this."
],
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4
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9ukxew | How do calculators work? | So all I know is I push the buttons and something electrical inside the calculator makes math happen. I would like a better explanation than that. | Technology | explainlikeimfive | {
"a_id": [
"e952m8t",
"e952a5t",
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],
"text": [
"When numbers are entered into a calculator they are first converted into binary code which transistors on and off (0 and 1). So you press the number 2 and the electrical signal turns one transistor on and another off. In binary, 00000010 = ... | [
"url"
] | [
"url"
] |
9ul13n | How come mp3 file qualities from Youtube Converters deteriorate with time? | Technology | explainlikeimfive | {
"a_id": [
"e95hd2o"
],
"text": [
"You'll have to clarify what you mean by \"deteriorate with time.\" Once a file is downloaded to your computer, unless you mess with it, the only thing that can happen to it is degradation of the medium containing the data, colloquially called \"bit rot.\""
],
"score... | [
"url"
] | [
"url"
] | |
9ul8a6 | In the context of video games, what exactly are unused assets, and how are they discovered by gamers? | I've been getting back into Bloodborne recently, and recently on r/bloodborne I saw a post about an unused boss that had the AI intact and it occured to me how little i knew about game developement. | Technology | explainlikeimfive | {
"a_id": [
"e958705",
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"text": [
"What are unused assets? images, sound files, algorithms, data (items, areas, characters, etc) and other stuff that isn't used and doesn't appear during normal gameplay. It may have been intended for inclusion in the game but removed at some point for any ... | [
"url"
] | [
"url"
] |
9ulhpu | How does a digital camera know when something is close or far away? | Technology | explainlikeimfive | {
"a_id": [
"e957p1s",
"e95alx5"
],
"text": [
"The passive form of autofocus analyses the image until the edges are sharp. If the focus area is wrong, the picture will be blurry where you want it to be crisp. The lens itself moves around to find the right focus. Active autofocus uses a different type ... | [
"url"
] | [
"url"
] | |
9uljao | What made CD music region free, but not DVD movies? | Most DVD movies i bought are strictly region locked, it is rare to see a region free DVD movie. Meanwhile CD music are not, is it technical limits? Or something more than that? | Technology | explainlikeimfive | {
"a_id": [
"e956jaz"
],
"text": [
"Compact disk audio is a much older standard (published around 1980) than DVD (first published around 1995). CD audio disks are not encrypted in any way, and such there would be a huge technical limitation to having implemented region coding, and such a feature could be ... | [
"url"
] | [
"url"
] |
9um52n | What exactly is software maintenance? | As far as i know code does not degrade over time like a car does so what would a maintainer of software be doing? | Technology | explainlikeimfive | {
"a_id": [
"e95aqsx"
],
"text": [
"1. Bug fixes. No software is perfect, and sometimes bugs are only found after the software has already been deployed for years because some user used it in an unexpected way. 2. Adaptation to updating environments. Perhaps certain features provided by the operating syst... | [
"url"
] | [
"url"
] |
9uo83r | how do different analog media formats make sound? Particularly Vinyls and the wiggly lines on film? | For some reason CDs and digital files don't surprise me, I kind of just add that up to computer magic. But I really can't wrap my head around how bumps on a vinyl and a little needle can result in a full blown symphony or replicate the intricacies of a person's voice. Furthermore, I'm equally baffled by film, my friend... | Technology | explainlikeimfive | {
"a_id": [
"e95pz5g",
"e95u56h"
],
"text": [
"All the sounds you hear are actually just changes in air pressure. As the air pressure in your ear rises and falls, it makes your eardrum vibrate, and your brain recognizes those vibrations as sounds. Even if there are 100 different instruments all playin... | [
"url"
] | [
"url"
] |
9uql78 | How do Satellites handle the millions if not billions of devices outfitted with GPS chips? | I know that they use radio waves to communicate, but every device needs 3-4 satellites to triangulate it's position. With the popularity of smart phones in every ones pocket now how are these satellites handing millions of "requests"? Not all satellites in orbit handle GPS communication either, right? | Technology | explainlikeimfive | {
"a_id": [
"e9673oo",
"e9677r5",
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"text": [
"GPS chips don't \"request\". They're passive devices. They listen to a continuous broadcast from each GPS satellite and use some crazy math to figure things out themselves. It's a one way transmission from the GPS satellite to the receiver.... | [
"url"
] | [
"url"
] |
9uqq50 | What is 5G? | Technology | explainlikeimfive | {
"a_id": [
"e96beuu",
"e96agto",
"e969t65"
],
"text": [
"The next generation of wireless cellular service that will allow providers to continue to overcharge us, yet only give us 1/10th of its theoretical speeds, as well as limit how much of it we can use while calling it \"unlimited\" service.",... | [
"url"
] | [
"url"
] | |
9uqutd | Why does Windows create input lag when not in fullscreen? | Technology | explainlikeimfive | {
"a_id": [
"e96snii"
],
"text": [
"The full answer to this is pretty complicated, but in simple terms, it's because in fullscreen your PC has less to do. When a game (or any other application) renders in fullscreen, it essentially \"owns\" the display. 100% of your computer's graphics power can go to it.... | [
"url"
] | [
"url"
] | |
9ur660 | how were wisdom teeth removed before the advances in modern dentistry | Technology | explainlikeimfive | {
"a_id": [
"e96c4ax"
],
"text": [
"Pliers. To be fair, a lot of people just kept their teeth in if it wasn’t causing them pain. Wisdom teeth usually crowd the mouth in those who need them removed, but it would only be pulled if it was painful. Whiskey, pliers, and a few minutes will get that pain right o... | [
"url"
] | [
"url"
] | |
9urf58 | How does the toilet without water that Bill Gates presented works ? | [ URL_0 ]( URL_0 ) & #x200B; | Technology | explainlikeimfive | {
"a_id": [
"e96g9xq"
],
"text": [
"It is a bowl where the waste is scraped out by a battery-powered mechanism, covered in wax, and allowed to dry out. A technician comes around periodically to empty out the dried feces for incineration and the waste urine/water can be used for other things."
],
"scor... | [
"url"
] | [
"url"
] |
9uryd6 | If you block someone on your phone, and they send you a message, do they know they're blocked? | For example, if I block an ex, does he get any notification if he sends me a text that the text didn't go through? Not that I want to get back with him, but I'm curious if he's texted me. Also, if I unblock him and he DID text me, would those texts suddenly come through? | Technology | explainlikeimfive | {
"a_id": [
"e96imox",
"e96ixkk",
"e96j9x9"
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"text": [
"No there is no notification. Depends on your phone but some phones have the messages from blocked contacts saved in a spam section.",
"No. Nothing will come through to you, nothing will tell him you blocked him, and you wont receive any... | [
"url"
] | [
"url"
] |
9uun6v | How do YouTube to mp3/mp4 converters work? | Technology | explainlikeimfive | {
"a_id": [
"e97ewwl"
],
"text": [
"The video/audio data has to get sent to the user somehow. Even if it’s not obvious for the average user, people familiar with the technical details of the internet and sending data know how to intercept the video stream. In many cases it’s as simple as finding and acces... | [
"url"
] | [
"url"
] | |
9uv4u7 | How do people make compilation videos? | Do people just download every single videos through mp4 downloader, one by one and just pile it up? If they do then that sounds really exhausting. Or is there another method? | Technology | explainlikeimfive | {
"a_id": [
"e979ku9"
],
"text": [
"In most cases, yes, people download or gather all the source footage (download a movie, download internet videos from YouTube, etc). In some cases, they record the screen during the part of their footage that they know they want. This is much better for people with limi... | [
"url"
] | [
"url"
] |
9uvybe | How can NFC chips be read without batteries being attached to them? | Like apparently the thing reading the chip gives it power, I think, but how? Or am I just completely wrong? | Technology | explainlikeimfive | {
"a_id": [
"e97ikp0",
"e97gt41"
],
"text": [
"While the reader emit enough electromagnetic energy to power the microchip, it is actually too weak for the chip to emit anything back on its antenna. The way it works instead is by back scattering: the reader emit on two frequencies, one is strong and is... | [
"url"
] | [
"url"
] |
9ux3y9 | why arent motorcycles front propelled? | Seems much safer that way | Technology | explainlikeimfive | {
"a_id": [
"e97ql7s",
"e97oxrg",
"e97ovvw",
"e97vut5"
],
"text": [
"When you lose grip on a tire on a two-wheeler, you really, really want it to be the rear tire. If the front starts to slip, you lose control, and you lose most of your ability to balance it. When I was a kid, I tried to learn... | [
"url"
] | [
"url"
] |
9uxuyl | What does a SOC Analyst actually do? | Technology | explainlikeimfive | {
"a_id": [
"e97tl1f"
],
"text": [
"Monitor and dig thru data from specialized tools to catch bad guys doing bad things in your network."
],
"score": [
3
],
"text_urls": [
[]
]
} | [
"url"
] | [
"url"
] | |
9uy09x | why do our phones charge faster when they have low battery? | Technology | explainlikeimfive | {
"a_id": [
"e97z28h",
"e982oqy"
],
"text": [
"When your phone is dead, it requests lots of power to fill it up quickly. But once it starts to fill up, it requests less and less as not to damage the battery with too much power. Think of it like filling a bucket to the brim. At first, you might run the... | [
"url"
] | [
"url"
] | |
9uzeay | How does a projector project black light? | Technology | explainlikeimfive | {
"a_id": [
"e982zfl",
"e9832nh"
],
"text": [
"They don't. The \"black\" parts of the projected image just don't have any light. So you're just seeing the absence of light on parts of the screen which looks black in contrast to the rest of the image.",
"It doesn’t. The blackness is only perceived ... | [
"url"
] | [
"url"
] | |
9uzxmg | Why does hitting a flashlight when the batteries are low keep it working for a short time? | If a flashlight is getting dim or having trouble turning on due to low power in the battery, it's common to bang on the flashlight a few times and it will start working. The same goes for batteries in a TV remote, except for banging on the batteries, just running your finger over them and making them roll in their slot... | Technology | explainlikeimfive | {
"a_id": [
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"e98mw2p",
"e98n14w",
"e98htx1",
"e98gvug",
"e98xzcq",
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],
"text": [
"Corrosion on the battery contacts creates resistance that reduces the current delivered. Vibration can wipe off some of the corrosion.",
"Most batteries stop working due to bui... | [
"url"
] | [
"url"
] |
9uzzng | Why do horses need horseshoes? | Technology | explainlikeimfive | {
"a_id": [
"e98dmxl",
"e988ozy",
"e98axey",
"e98sbia",
"e98wt8x",
"e987w33",
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"text": [
"Depending on what type of surface/work your horse will be doing, they don't always need to wear shoes. Also some horses have healthier stronger hooves genetically than others. It j... | [
"url"
] | [
"url"
] | |
9v00bc | In terms of technology and programming, what is an API? Hearing that the homebrew scene is working on porting OpenGL to the Nintendo Switch, so makes "OpenGL" different than others? | Technology | explainlikeimfive | {
"a_id": [
"e988koz",
"e98ew9c"
],
"text": [
"API stands for [Application Programming Interface]( URL_0 ). When someone writes a big computer program, like Windows or Linux or the DirectX graphics library or the OpenGL graphics library, that program includes an API that lets other programmers tell th... | [
"url"
] | [
"url"
] | |
9v0nse | best audio resolution (m4a, flac, mp3) | Technology | explainlikeimfive | {
"a_id": [
"e98gm0z",
"e98ft9x"
],
"text": [
"First off, “resolution” = fidelity. When music is recorded digitally it is done by sampling the audio so many times a second then reconstructing the waveform based on the data it gathers. This is why people think analog is better - particles on a tape wil... | [
"url"
] | [
"url"
] | |
9v0y78 | What is the difference between Linux and BSD? | I have been told by many people that it is not safe to use Windows XP on a computer with internet access anymore and that I need to switch. I do not like Windows Vista, 7, 8 or 10 and I do not like Mac OS X, so I am considering switching to a Unix system. The ones recommended to me were Slackware, Debian and ArchLinux ... | Technology | explainlikeimfive | {
"a_id": [
"e98i931",
"e98knjg",
"e98kkwo",
"e98id7a"
],
"text": [
"Both BSD and Linux are open source Operating systems based on UNIX. Modern BSD OSs are descended from a UNIX distro directly while LINUX started out as an attempt to rebuild something like UNIX from scratch. Linux in its vari... | [
"url"
] | [
"url"
] |
9v1glp | What’s the significance of AMD’s 7nm GPU? | Technology | explainlikeimfive | {
"a_id": [
"e98kjye",
"e98p1fr"
],
"text": [
"The smaller it is it consumes less power, produces less heat and is physically smaller, which, altogether lets you cram more stuff in the same cpu, all while using the same amount of power, the same size and producing the same heat. Or you could make the ... | [
"url"
] | [
"url"
] | |
9v6n3n | How does Samsung's Fast Charger Wall Adapter charge so much faster compared to a regular wall adapter? | EDIT: I did not mean to come off like an advertisement, I just happen to have a Samsung. | Technology | explainlikeimfive | {
"a_id": [
"e99thw1"
],
"text": [
"The phone and charger talk to each other and negotiate a voltage and current to be allowed to the device. If Samsung is producing high-quality batteries that can take more charge power, it can negotiate a higher amount of power to be fed in. Each company has their own c... | [
"url"
] | [
"url"
] |
9v6z8u | When a website asks you to prove you are not a robot by identifying storefronts/busses/streetlights/etc, how is it determining you are not a robot? | Technology | explainlikeimfive | {
"a_id": [
"e99vst1"
],
"text": [
"Those tasks are not easy to solve for computers without reasonable effort put into making robust algorithms that probably aren’t worth the time for spammers, etc. Without such obstacles, websites receive a lot of automated garbage and fluffed up web traffic"
],
"sco... | [
"url"
] | [
"url"
] | |
9v7h0n | how do traffic lights work? | this is such a stupid question and im 18 so i should probably know! how the hell do traffic lights know when to change color?? | Technology | explainlikeimfive | {
"a_id": [
"e99zolb",
"e9a318y"
],
"text": [
"Traffic lights are programmed on timers. The times change based on time of day, changing more often during high traffic times.",
"They use a combination of timers, in-ground sensors, and commands from city-wide traffic control centers. At the lowest l... | [
"url"
] | [
"url"
] |
9v81nq | If Ancient Romans and Greeks used short swords, why in the middle Ages did Swords become 'bigger'? | We're told that the Ancient Greeks and Romans were very advanced in their practise of warfare, and the short swords were preferred as they offered the wielder more control, as well as having other advantages. & #x200B; So why did we end up with Broad Swords and Long Swords? Was it to pierce armour? Surely these swords ... | Technology | explainlikeimfive | {
"a_id": [
"e9a47ik",
"e9a557z",
"e9a46oa",
"e9a948h",
"e9a4vpc",
"e9a4d76",
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],
"text": [
"There are a few factors that caused this to some extent. The development of ironworking allowed for the creation of larger weapons. The tactics of the classical era ... | [
"url"
] | [
"url"
] |
9v874a | Why do image file sizes differ if the lens and camera are the same? | Technology | explainlikeimfive | {
"a_id": [
"e9a4k22"
],
"text": [
"Images are compressed. Compression depends on the contents, some content can be more easily compressed than other content. This is because compression works mainly by removing repetitions in the data, so if the data has lots of repetitions (for example if the image is j... | [
"url"
] | [
"url"
] | |
9v8nqo | How do we currently or plan to in future navigate through the solar system? | I understand how we use GPS and innertial navigation on Earth but is there a plan to eventually have a much wider constellation in the solar system to navigate? | Technology | explainlikeimfive | {
"a_id": [
"e9a7cdg"
],
"text": [
"Same way we navigated the seas before GPS: the most accurate clock we can make and measuring the angle to stars. The most accurate clock we can make has gotten insanely accurate since the age of sail, and as far as stellar observation a go pro on a satellite does that b... | [
"url"
] | [
"url"
] |
9v9fir | How do Mesh Wifi sustain speeds when a Repeater drops a speed to half? | I understand that, using a Repeater results in our internet speed being cut in half as it has to re-encode the packets before broadcasting. But, isn't mesh wifi basically a primary router coupled with a number of repeaters? | Technology | explainlikeimfive | {
"a_id": [
"e9aeiyw",
"e9arx2y",
"e9ae1vc",
"e9akf20"
],
"text": [
"mesh wifi has 2x2 or 3x3 antennas that means they can communicate with each other on a separate channel leaving a channel free for clients old repeaters didn't have multiple antennas (MIMO), so speed was cut in half or worst"... | [
"url"
] | [
"url"
] |
9v9ryy | How are videogames stored on a blue ray disc? | Technology | explainlikeimfive | {
"a_id": [
"e9aecco",
"e9af4dc"
],
"text": [
"Like any other computer data, the optical disc (including CD, DVD, BD, Laserdisc and others), uses a laser-etched reflective groove, like an old record to record the programs in binary.",
"CD, DVD, and Blu-Ray all work the same way: data is stored on ... | [
"url"
] | [
"url"
] | |
9va4v4 | Do RGB LED's have the ability to display a wide range of colors. What causes the color to change, is it the voltage? | I am planning to build an Arcade Cabinet and I have been thinking of wiring up led's to the Joysticks and Buttons. For the life of me, I can't understand what makes the led's change colors. There is so much information out there but I seem to be having trouble understanding it. | Technology | explainlikeimfive | {
"a_id": [
"e9ahd8b"
],
"text": [
"An RGB LED is actually 3 LEDs in one package. One each of Red Green and Blue. But changing the intensity of each of the 3 LEDs you get a unique color from the single bulb. The human eye doesn’t see the individual colors but a mix into a single color. Lots more details: ... | [
"url"
] | [
"url"
] |
9vaw0i | How does my remote car key know which car to unlock even in the presence of other similar makes/models | Technology | explainlikeimfive | {
"a_id": [
"e9an8xf",
"e9ats0x",
"e9anfeh",
"e9aozh9",
"e9aqlha"
],
"text": [
"It sends a coded signal, which your specific car is configured to look for. If the signal does not match, it doesn't unlock. While it is entirely possible the signal is not truly unique, there is enough variety... | [
"url"
] | [
"url"
] | |
9vaxs5 | Why do some USB-C Cables have different functionality than others? | Technology | explainlikeimfive | {
"a_id": [
"e9ap7hm",
"e9aprhy",
"e9aq229",
"e9apydu"
],
"text": [
"USB-C is the physical port on the end of the wire. It doesn't imply anything about the actual capacity of the wire it's connected to. That's what 2 vs 3.1 is about.",
"The biggest change introduced in USB 3.0 was the new ... | [
"url"
] | [
"url"
] | |
9vb6uk | How my phone charger lets me play music though my car | Technology | explainlikeimfive | {
"a_id": [
"e9aptsw",
"e9aq07n",
"e9aqf9f",
"e9apw5t"
],
"text": [
"That USB or Lightening cable you plug into your stereo actually has tiny power and headphone cables inside of it.",
"USB cables have several different parts to them. Some transfer power, some transfer data. You're probabl... | [
"url"
] | [
"url"
] | |
9vc64p | Why do phones require you to delete hundreds of megabites just to install a little 5mb update? | Technology | explainlikeimfive | {
"a_id": [
"e9az8fc"
],
"text": [
"Likely it needs to “unpack” the update, probably take some backup procedures in case something goes wrong and then install the update"
],
"score": [
6
],
"text_urls": [
[]
]
} | [
"url"
] | [
"url"
] | |
9vcmlj | Why do fireworks look so bad on film/video, yet look good irl? | Technology | explainlikeimfive | {
"a_id": [
"e9b2nh4"
],
"text": [
"Fireworks can look great on video if you have a good enough camera. Cheap cameras, like the ones in our phones, can't handle low light conditions very well and have a hard time focusing on the rapid flashes coming from a firework. The camera is constantly trying to auto... | [
"url"
] | [
"url"
] | |
9vcogz | Why do you have to “return” an e-book from an online library service. Why can’t you just download it if they’re already letting you read it for free whenever you want? | My library has an e-book service where you can ready any book they have in their catalog as an e-book. The only thing is, you have to “borrow” it, and then return it in 7 days. But as soon as you “return” the e-book you can just hit “borrow” again. So how is that any different than just letting the library users downlo... | Technology | explainlikeimfive | {
"a_id": [
"e9b2s54",
"e9b2y1j",
"e9b3231",
"e9b7wc7"
],
"text": [
"Copyright and licensing. Same reason you can't just go to a library, take a book home, and photocopy every page so you have your own personal copy.",
"Because of licensing, they can only have so many users “check out” a b... | [
"url"
] | [
"url"
] |
9vctbh | How do video streaming services like Netflix or Amazon obtain the original video files from their license providers? | Technology | explainlikeimfive | {
"a_id": [
"e9b6bvm"
],
"text": [
"Depending on the service, licensor, and contractual agreements, they either receive the file from a digital distributor or they receive a direct upload from licensor to licensee via a portal or API. Digital distributors need some explanation, so: Digital distributors ar... | [
"url"
] | [
"url"
] | |
9vdat6 | Why does the screen of a calculator turn a blue colour when you press in on it? | Technology | explainlikeimfive | {
"a_id": [
"e9ba8v8",
"e9babqh"
],
"text": [
"You must be talking about a Liquid Crystal Display (LCD). If that is the case, then the actual crystals that bend the light are essentially liquid, so if you press down, you deform them, and they half-turn, and begin reflecting random bits of light.",
... | [
"url"
] | [
"url"
] | |
9vdl7p | How Google expands their databases so that they can supply the customers' storage demand? | Technology | explainlikeimfive | {
"a_id": [
"e9bapl1"
],
"text": [
"They go to Best Buy and buy more hard drives... But seriously they either add more data centers once it looks like they are nearing capacity or expand their current ones/bring online existing hardware to fill the demand."
],
"score": [
5
],
"text_urls": [
... | [
"url"
] | [
"url"
] | |
9ve2lc | Relay car theft | I understand that the signal from the key-fob inside the house is boosted, then relayed to the car to open it. But, surely, the key-fob button would need to be pressed. No? | Technology | explainlikeimfive | {
"a_id": [
"e9bew2l",
"e9bfi25",
"e9bir91"
],
"text": [
"I believe that this only works with hands free opening. Either the key or car is constantly emitting",
"Cars with keyless opening only need the key to be in range of the car, so key emits a signal saying \"hey I'm here\". Car goes \"awe... | [
"url"
] | [
"url"
] |
9ve7q0 | Tor - why aren't exit and relay nodes liable for all the illegal stuff? | Technology | explainlikeimfive | {
"a_id": [
"e9bg4c4"
],
"text": [
"If that were the case, then every ISP would be liable for everything on the Internet, since all of your information passes through your ISP's computers even if you're not using a proxy. So in order to make the Internet work, the law had to be written so that passthrough... | [
"url"
] | [
"url"
] | |
9vg6ed | Why do our eyes turn red in pictures, and how did they fix it?? | Technology | explainlikeimfive | {
"a_id": [
"e9c4ui4",
"e9bwqgi"
],
"text": [
"The back of your eye is red. If your flash is right next to your lens (as it is on smaller cameras) then the flash lights up the back of your eye, and it shows up really well in the picture as red. Pro photographers avoid red eye by putting their flashes ... | [
"url"
] | [
"url"
] | |
9vgr69 | Why do an all electric car needs a 12V battery. | Technology | explainlikeimfive | {
"a_id": [
"e9c27ry",
"e9ce50u",
"e9c404w"
],
"text": [
"Because they don't want to reinvent everything that's already developed for cars. Window motors, headlights, radios, various sensors and every electronic device you can think of that your car needs to run all run off 12v power. There's no r... | [
"url"
] | [
"url"
] | |
9vhjg1 | How does “the clapper” work for switching lights on/off? | Technology | explainlikeimfive | {
"a_id": [
"e9ca3uz"
],
"text": [
"There is an internal microphone that picks up all the sound \"happening\" around the clapper device, and sends it to what is essentially a small computer that translates that sound to information. If that sound is a clap, it will know. (Claps usually fall between the ra... | [
"url"
] | [
"url"
] | |
9vi8p3 | How does YouTube accurately suggest what I want to search when I’m typing a video title into the search bar? | This has happened to me multiple times with a variety or topics, but I’ll provide an example. I was watching a JRE video on voting, and someone in the comments mentioned George Carlin’s skit on voting. I wanted to see what the comment was referring to, and proceeded to type ‘George Carlin’ into the search bar and the t... | Technology | explainlikeimfive | {
"a_id": [
"e9cevpx",
"e9cew75"
],
"text": [
"It has an algorithm that can track what other people search for after watching a certain video, and then will optimize it's search to keep you engaged on their site.",
"Youtube tracks what other people search for while watching the same video. Many pe... | [
"url"
] | [
"url"
] |
9vl0pq | What is the Zenneck Wave? How does it work? How can Zenneck Wave transfer "utility-scale" electrical power wirelessly? | Please explain this to me. We were recently informed that we might be getting this technology at work and I don't understand it... | Technology | explainlikeimfive | {
"a_id": [
"e9d3xi4"
],
"text": [
"> We were recently informed that we might be getting this technology at work Oh darn, prepare your resume because your company is getting scammed. In theory a \"Zenneck Wave\" is a special kind of wave which uses the Earth's surface as a wave guide to... tack together w... | [
"url"
] | [
"url"
] |
9vmhwp | How does computer code get "bugs"? | Technology | explainlikeimfive | {
"a_id": [
"e9dcq3i",
"e9dcjxb",
"e9dfi8z"
],
"text": [
"Programmers add them, in a process called embugging. No, kidding, the process is called \"trying to get the program to work\". People are not perfect, and they don't always understand all the possible inputs to a program. They presume that ... | [
"url"
] | [
"url"
] | |
9vmji1 | Why does so much banking software have you enter dollar amounts without a decimal key? | Say you're entering $150, it goes like this: .01 .15 1.50 15.00 150.00 I can sort of understand this on an ATM where the keys kind of suck but why keep it on the bank websites or something like paypal? | Technology | explainlikeimfive | {
"a_id": [
"e9ddgym"
],
"text": [
"It enforces the entry of a valid, full amount of money. Suppose you entered \"150.0\", what does that mean? Did you mean $15 or $150? Should the system just reject the entry entirely (bad interface design), or should it default to the lowest value for safety? If we assu... | [
"url"
] | [
"url"
] |
9vqpc5 | How do websites remember your password if its only secret to you? | Technology | explainlikeimfive | {
"a_id": [
"e9edy3x",
"e9ed6do"
],
"text": [
"They run it through a machine (algorithm) that scrambles text into an unrecognizable pattern. This machine is special. It can’t unscramble, it always scrambles things the same way, and it will never scramble different text into the same pattern. So, they ... | [
"url"
] | [
"url"
] | |
9vr0rg | How do CPU manufacurers print circuts so small? | I just learned that the actual dye is like 1/10 the size of the CPU, so how do they put so many circuits in there? | Technology | explainlikeimfive | {
"a_id": [
"e9ehs5w",
"e9eh9a2"
],
"text": [
"It is a pretty complicated process, but the three main steps are: mask, deposition, and etch. First you apply a layer to the silicon wafer using a mask to cover certain areas. Then you deposit material that sticks to the wafer but not the protective layer... | [
"url"
] | [
"url"
] |
9vr4d8 | why do computer screens look weird on camera? | Technology | explainlikeimfive | {
"a_id": [
"e9eg9u2"
],
"text": [
"Because the screen refreshes at a faster rate than the camera records. Same reason LED headlights seem to blink in videos."
],
"score": [
5
],
"text_urls": [
[]
]
} | [
"url"
] | [
"url"
] | |
9vvi0t | Why is 16:9 Aspect Ratio so preferred over 4:3 Aspect Ratio? | Technology | explainlikeimfive | {
"a_id": [
"e9fftnx",
"e9fg97h",
"e9fd0n1"
],
"text": [
"Two reasons: - 16:9 is a compromise between 4:3 and 2.35:1. Material formatted in either format will occupy roughly the same amount of area on a 16:9 screen. - 16:9 is approximately 1.78:1. Most movies produced since the 1950’s, when the mo... | [
"url"
] | [
"url"
] | |
9vxv2r | How did Google Chrome become so popular? | Wikipedia says that Chrome has a 60% market share of web users. This is the top of all the browsers, and over 4x the number of users that Safari has, which is 2 on the list. How did Chrome manage to do this? I know that it is the superior browser, especially compared to Internet Explorer. But internet explorer is shipp... | Technology | explainlikeimfive | {
"a_id": [
"e9fy526",
"e9g4q8c",
"e9g4sum",
"e9g334h",
"e9fy5br"
],
"text": [
"* First Google became a very very popular search engine. * Google started promoting Chrome on their browser page. * Google also released Gmail which became very popular. * This built up brand trust which made i... | [
"url"
] | [
"url"
] |
9vypng | Why is it that when electronics die, you plug them into a power source and they reboot instantly, but with an iPhone, it takes ages to gather up enough charge before it actually reboots and starts up? | Technology | explainlikeimfive | {
"a_id": [
"e9g61mj",
"e9g86zj"
],
"text": [
"The situation that the iPhone is designed to avoid is that you plug your phone in, it starts back up and you immediately unplug it and the phone shuts down without having enough energy to properly close everything. If you notice, when you iPhone dies, it ... | [
"url"
] | [
"url"
] | |
9w0c5v | How do certain websites know that you have AdBlock Enabled? | How do some websites notice that you have AdBlock? When you open a few websites, you are sometimes told that AdBlock was detected and it must be turned off. How do they detect that AdBlock is active? | Technology | explainlikeimfive | {
"a_id": [
"e9gsvdq"
],
"text": [
"Their pages include a script that looks (to your adblocker) like an ad. If that script is NOT run, the site gives you a 'please turn off your adblocker' message. tl;dr they include a script likely to get blocked by adblockers and detect that script not being run."
],
... | [
"url"
] | [
"url"
] |
9w1fm5 | Why do some analog watches contain quartz/rubies/other gems? | Technology | explainlikeimfive | {
"a_id": [
"e9gvt7g",
"e9gx2bj",
"e9guot5"
],
"text": [
"Synthetic rubies are used to mate moving parts to prevent metal-on-metal contact and wear. The reduced friction created by the rubies' hardness increases the lifespan of the tiny metal parts. Quartz is used in most modern electronic movemen... | [
"url"
] | [
"url"
] | |
9w20vn | How did live TV broadcasts work before the invention of digital cameras? | When video cameras used to work via film, how did they transmit the footage in real time to far away places if the footage is captured on a physical film? | Technology | explainlikeimfive | {
"a_id": [
"e9gzmu8",
"e9gytvs",
"e9hcxg4"
],
"text": [
"Old TV cameras used a specialized form of cathode ray tube called a video tube to scan the image and convert it into an electrical signal, which could then be broadcast and converted back into video by an image-forming cathode ray tube in t... | [
"url"
] | [
"url"
] |
9w3kqa | How do those table saws that stop when you touch them with your finger work? | Just saw a gif of one where they showed the saw completely stopping the second it was touched by a hot dog. How does it know what to stop for? Edit: Like the one in this gif: URL_0 | Technology | explainlikeimfive | {
"a_id": [
"e9h8lte",
"e9hf684",
"e9hbpqe",
"e9hgjsz",
"e9hgiye",
"e9hr3xe",
"e9hhdin",
"e9hrao0",
"e9hisv6",
"e9hkezs",
"e9i06qc",
"e9hgclh"
],
"text": [
"The blade carries a small electrical signal, which the safety system continually monitors. When skin cont... | [
"url"
] | [
"url"
] |
9w499o | How do touch lamps work? | Also, how do touch lamp adapters work? My friend made his regular lamp into a touch lamp by plugging it into an adapter which baffles me. | Technology | explainlikeimfive | {
"a_id": [
"e9hipqr",
"e9hfolx",
"e9hf0d3"
],
"text": [
"The same way your phone's touchscreen works. An electric charge is sent to the lamps housing. The lamp can store a set number of elections based on its size. It has an electrical *capacity*. Basically, it builds up a slight static charge ju... | [
"url"
] | [
"url"
] |
9w70qc | Why first iPod was such an revolutionary device? | Technology | explainlikeimfive | {
"a_id": [
"e9i7np3"
],
"text": [
"Instead of carrying around a collection of CD's or tapes with you it was now possible to have your entire music collection in a device the size of the palm of your hand. Keep in mind this was also before wifi and Cellphones were ubiquitous so you couldn't just go on spo... | [
"url"
] | [
"url"
] | |
9w7dn5 | Why are smart phone cameras lacking an IR filter? | Technology | explainlikeimfive | {
"a_id": [
"e9ic0ga"
],
"text": [
"Because somewhere in design phase, a product engineer or a product manager said....no we aren't going to put one in. Why they did that, because they're cost constrained, not convinced of the benefit, didn't find a good vendor, etc etc etc."
],
"score": [
3
],
... | [
"url"
] | [
"url"
] | |
9w7z4k | Does every digital device with UI have an OS? | Technology | explainlikeimfive | {
"a_id": [
"e9ijivz"
],
"text": [
"No to maybe depending on how you define OS and UI. The simplest User Interface would be some buttons and status LEDs. These devices probably wouldn't have an OS. If you meant a Graphical User Interface that can draw some sort of complex graphics on a screen many of thes... | [
"url"
] | [
"url"
] | |
9w8ngk | How does silk-screen printing work? | How does the artist make sure that the colors end up in the right places? | Technology | explainlikeimfive | {
"a_id": [
"e9it3ai"
],
"text": [
"Krystar has got a very simple version, but I can give you a longer one. I used to do both art and t shirt printing, so I've got a lot of explanations. First, there are a lot of ways to get things lined up. Some printers use \"registration marks.\" Those are little shape... | [
"url"
] | [
"url"
] |
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