Recent comments in /f/explainlikeimfive
86tuning t1_j21e6q7 wrote
Reply to comment by prendrefeu in ELI5: Why is burning wood (local, natural) considered bad for the environment, yet naturally occurring forest fires considered good for climate stabilization? by prendrefeu
> So if I felled my own trees
or use deadfall when possible.
rysworld t1_j21dbyy wrote
Reply to comment by [deleted] in Eli5: Would it be easier or harder for a pregnant woman to give birth in zero gravity? Apart from there being no gravity, would it be any different at all from giving birth while on earth? by The_Guy_Who_Wanders
You have a couple of recent posts which are of a much more rambly and long bent than your usual style, with a different tone to the writing and less capitalization and grammar errors. Have you been using AI to write your recent posts? Please don't do that on a place where people are trying to get actual answers like ELI5.
ocelot08 t1_j21buey wrote
Reply to comment by Wanderslost in ELI5: How is that Pantone colors don't have direct RGB counterparts? by ExternalUserError
Ah interesting. I mean it's not gonna be much help, but I would basically just create a color palette in some Adobe program and then match pantone swatches to it. As it sounds like you've seen, color theory can get really complicated.
A nice tool is Adobe color. It won't give you a set of 12 but it could make for some good starting points as they have a number or ways to use different colors and push and pull them together as a set.
Anyways, good luck!
Fred2718 t1_j21b6p0 wrote
Reply to [ELI5] How do online compression algorithms manage to take a file that is dozens of megabytes in size and shrink it down to just a few kilobytes, while mantaining the same quality? by Karamel43
Here are a couple of techniques which may not be in use anymore.
"Rook move encoding" for outlines of shapes, in particular digitized text characters. Instead of recording all the black and white pixels inside the character's body, record the outline of the character, in xy pixel space, as if you were moving a chess rook. E.g. 5 up, 2 left, 4 up, 3 left, ..... I worked with laser printers which did this.
"Patchified memory". Instead of treating a page as a set of raster lines, treat it as a set of small squares, like a quilt. Printed pages of text + black/white graphics tend to have lots of such patches which are all-white or all-black. Those patches can be represented in a very compact way.
These techniques are mathematically unsophisticated, but are easy to understand. Oh, also, they are both "lossless".
nachoha t1_j21aaam wrote
Reply to Eli5: Would it be easier or harder for a pregnant woman to give birth in zero gravity? Apart from there being no gravity, would it be any different at all from giving birth while on earth? by The_Guy_Who_Wanders
I would think it would be much more dangerous for the baby due to the way that fluids stick to objects rather than fall away.
152centimetres t1_j2182o5 wrote
hey op i think you would like this tiktok that explains the origins of christmas in relation to a indigenous russian tradition, i know your question is about red and green, this is more red and white based, but mentions pine trees specifically which as we all know are sometimes called "evergreens"
This_Werewolf_2391 t1_j217thp wrote
Reply to ELI5 What is Thermodynamics? by SheeshKebabi
Three laws of thermodynamics:
1st Law of Thermodynamics - Energy cannot be created or destroyed. 2nd Law of Thermodynamics - For a spontaneous process, the entropy of the universe increases. 3rd Law of Thermodynamics - A perfect crystal at zero Kelvin has zero entropy.
You grow on these laws to understand how energy exists and changes in forms of heat, motion, chemical potential, and pressure. Understanding these three laws allows you to explore subjects of like physics, heat transfer, physical chemistry, fluid mechanics and so much more. Thermo can be used to create new processes and debunk inachievable ideas.
As a chemical engineer it’s the most useful class I took. It made me see the world with a different perspective!
SsooooOriginal t1_j217mn0 wrote
Reply to comment by KrakenOfLakeZurich in ELI5: What is a network port? by Brianprokpo456
Just wanting to comment, thank you.
This is the best thread I've seen today and very informative!
Amidam67 t1_j2166e5 wrote
Reply to comment by -Humdog- in ElI5: Why does Descartes sometimes use the term "mind" and sometimes the word "souls" in his writings? by [deleted]
As a native speaker, I would say "esprit" can, depending on the context, mean either "spirit" (of a person, a place, ghost) or "mind". But it seems like it's always one or the other, and never a mix of both. Two distinct meanings.
explainlikeimfive-ModTeam t1_j215s2f wrote
Reply to ELI5: What is causing the cascade of flight delays and cancellations across the US? by actionguy87
Your submission has been removed for the following reason(s):
ELI5 is not for information about a specific narrow issue (personal problems, private experiences, legal questions, medical inquiries, how-to, relationship advice, etc.)
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Future_Club1171 t1_j214zy7 wrote
Reply to comment by atomfullerene in ELI5: If astronomers use "light-years" for interstellar distances, why do we use AU for interplanetary distances instead of "light-minutes"? by concorde77
I mean just like imperial, the units are based on SI which is mostly metric. Anything SI with distance can and is defined in meters. It’s just that using meters to convey such quickly gets messy since the universe isn’t going to make everything near round numbers. To give you a fermi approx of an AU, light takes 498 seconds to reach earth, light travels at 2.998x10^8 meters/second, therefore 1 AU is approximately 1.5x10^11 meters, that’s 150 gigameters, note the earth is only 40 mega meters even by the original meter definition.
The_camperdave t1_j214xqn wrote
Reply to comment by Dorocche in ELI5: Why is burning wood (local, natural) considered bad for the environment, yet naturally occurring forest fires considered good for climate stabilization? by prendrefeu
> County, not country.
Ah! Gotcha. I guess I had a leftover R from last talk-like-a-pirate day, and it chose this moment to escape.
Yes, counties and municipalities can have bylaws banning wood burning, especially in hot, dry seasons and in dense sub-divisions. OP will have to consult his local town council (or equivalent) to get an explanation - probably an anti-nuisance bylaw, though.
plaid_rabbit t1_j214ece wrote
Reply to comment by ExternalUserError in ELI5: How is that Pantone colors don't have direct RGB counterparts? by ExternalUserError
In the file, it stores "This item is pantone-1234", and lets the software using the file figure out what to do with it. So when it's rendered to screen, it uses a lookup to pick a good RGB color. When it's printed in CMYK it uses another. When you check it against what light it reflects, that's it's own set of rules about what it's "supposed to" look like. Fancy industrial printers have the ability to load specific inks for specific colors. So a press might support 4 colors, which you normally load CMYK. But let's say you're making a bunch of pamphlets for one company, which is black and white, but they want their logo on each page. You can load Black, and 3 other customs colors in instead. Some machines support something like 8 colors, just for this reason. Sometimes you need to load white ink because your printing on non-white materials. CMYK is just the most basic way of printing color.
dperry1973 t1_j212ojk wrote
Reply to comment by maartenvanheek in ELI5: How is that Pantone colors don't have direct RGB counterparts? by ExternalUserError
Any commercial printing press will have capacity for CMYK ink plus multiple Pantone inks. A machine called a raster image processor reads say a PDF and generates individual printing plates for every color specified by the designer/client. A designer will apply Pantone color stickers to the ink jet or laser printout that the designer sends along with the digital file so that the print shop can prepare the printing plates and Pantone inks for the job. A machine like the automated paint mixers in a hardware store are used to mix up Pantone inks that a print shop doesn’t have on hand. There’s obviously an upcharge for custom inks which the cost is tacked into the bill. Clients will fire a designer for allowing the wrong Pantone colors to go to press. If a Pantone code is in the specification doc isn’t used by the print shop, the print shop will eat the cost of the mistake. There’s a “nobody got fired for choosing Pantone colors when it matters” mentality amongst designers and printers.
csl512 t1_j212eht wrote
Reply to comment by JohannesWurst in ELI5: How is that Pantone colors don't have direct RGB counterparts? by ExternalUserError
Nope. Spectral colors are those made by pure wavelengths: https://en.wikipedia.org/wiki/Spectral_color
In the chart in that page, there's a horseshoe shaped curve with numbers between 300 and 700. Those correspond to wavelengths. Anything not on that line cannot be made with just a single wavelength.
Color science is super weird and unintuitive, and relies very heavily on the human perception of it, which involves cone receptors tuned to different ranges of light, approximately but not exactly red green and blue.
If you really want to get confused, https://www.reddit.com/r/philosophy/comments/18rbn2/is_your_red_the_same_as_my_red/
wappledilly t1_j2113qg wrote
Reply to comment by could_use_a_snack in ELI5: What is a network port? by Brianprokpo456
Many ports are reserved for common functions (22 and 53 are always ssh and dns), but many are used for different things altogether (8080 for instance can be used for many different services across many different vendors/developers).
IANA maintains the list of reserved ports when dealing with internet, and can be found at their website (along with other lists such as top level domains, IP address allocation, etc.) https://iana.org/
interwebz_2021 t1_j210zsg wrote
Reply to comment by KrakenOfLakeZurich in ELI5: What is a network port? by Brianprokpo456
Excellent description. I often use the metaphor of an apartment building's mailboxes with "the internet" (really, the network elements, obv) being the postal service, the building being the IP address and the mailboxes being the ports, mapped to services/programs. So far, it's worked pretty well. This also lets me extend the discussion to TCP vs UDP, where I compare UDP to simply mailing a letter and TCP to requiring a signature verifying receipt.
bbqroast t1_j210p6p wrote
Reply to comment by insultant_ in ELI5: What is a network port? by Brianprokpo456
Applications that are waiting for anyone to mail them (i.e. server apps) need to "bind" a port and listen for traffic.
They generally do this on a specific port, this is so applications that want to talk to them can find them.
Applications that just want to start a chat with someone (i.e. client apps) can use a random one of the temporary ports as a return address for the duration of the correspondence.
If they use a port outside that range, then potentially they might prevent one of the applications that needs to listen to a specific port from starting (only one app can use a port at once). Likewise, if you decide to use a specific port in the temporary range, you run the risk it's randomly in use by someone else
86tuning t1_j210cor wrote
Reply to comment by hillsanddales in ELI5: What are the consequences of overeating? by Smart-Veterinarian11
this is perhaps the best analogy so far.
the body naturally converts energy to fat for storage. some body fat is necessary to stay healthy, the bodybuilders that cut to 1% for competitions don't look like that year round, it's actually not healthy to be at that percentage at all. that said, less than .0001% of the population can do this, which means we are not in danger of this at all.
the opposite is also true. excess body fat leads to all sorts of health problems.
interwebz_2021 t1_j210clo wrote
Reply to comment by DragonFireCK in ELI5: What is a network port? by Brianprokpo456
>socket
Just in case anyone's not seen the term 'socket' before: this is a logical address comprised of the IP address and port. So, for instance, if you have a web server listening on port 80 on your local loopback interface with IP address 127.0.0.1, you can connect to the webserver via the socket with address 127.0.0.1:80
PM_ur_Rump t1_j210317 wrote
Reply to comment by mixer99 in ELI5: What is causing the cascade of flight delays and cancellations across the US? by actionguy87
It's both. It's mismanagement to extract maximum profits from minimal crews, colliding with bad weather. It's easier to work around problems when you have the staff and planes to do so.
nullagravida t1_j21fite wrote
Reply to ELI5: How is that Pantone colors don't have direct RGB counterparts? by ExternalUserError
Pantone is ink. it’s an ink company and ink is its reason for being.
Monitors, and the need to show colors on them, are a new twist in the ink biz. They had to create additive (light based) versions of the colors that CAN be shown on a monitor, but many cannot: metallics. Neons. Translucent varnishes. Matte finishes.