Sounds like some shitty shampoo, lets be honest prof.

It does in terms of representing the colors humans can see, but you still need to be able to produce those colors in a range of different media.

It's just pan- (Greek for "all" or "everywhere") + tone (as in, shade of color). Seems like a good name for a universal color-matching system.

> These are the colors our eyes see.

No, they aren't.

The three cones in your eyes respond most strongly to deep blue-violet, green, and yellow-green. But they see a distribution of colors around those peaks.

What you're getting at here is the idea that color is about tristimulus values, not the spectral power distribution. And that's true, at least under the assumption of humans with normal color vision.

But red, green, and blue light are not the tristimulus values, and don't cover all possible stimulus values that can be produced by a spectral distribution.

I sell acrylic goods (dice). My manufacturer works in Pantone, specifically Pantone C. As far as I can tell, C is for surfaces, as opposed to photography and print.

I can attest that getting a spectrum of colors that is in your head translated to various color methods is much, much more nuanced than I expected.

ah, I just misunderstood "universal smallest possible distance"

>Why can’t port numbers below 49152 act like “Airbnb for applications?” Conversely, why can’t port 49153 and above have, per your analogy, “long-term tenants.” Or can they?

Convention - the same as why a hotel room generally won't have a long-term occupant and an apartment won't have a short-term renter. With that, its also likely somebody else may be using them for their intended purpose, thus causing random failures if an application tries to use them incorrectly.

Firewalls will also frequently block or allow specific ports by number, though they will normally only block incoming connections, not outgoing. This may cause a program using an unexpected port to get incorrectly blocked, requiring users to manually open those ports.

>Furthermore, what event on the server would be equivalent to “evicting” a program from its “apartment?”

Generally, the operating system will have a method of force disconnecting a socket, though such APIs are normally tightly restricted in usage. In most cases, they are restricted to usage by debugging tools.

Yes and no, but only as it applies to chokes. Spiking intra-cranial puts you out before the lack of oxygen could.

While a choke does cut off/limit oxygen supply to the brain by limiting blood flow, which is air-flow as some have said, something else is usually going on.

The jugular veins are easier to occlude than the deeper arteries are, especially the internal carotid pair and the vertebral artery in the posterior neck. So, a choke actually TRAPS blood in the head, preventing it from flowing out at the same rate it's being pumped in.

This creates a spike in intra-cranial blood pressure, and THAT causes the KO even aster than hypoxia would. This can take, 3-4 seconds.

If it takes closer to 12-15 seconds, that's probably more from hypoxia.

I had the same experience when I started smoking. It was horrible but I kept smoking. I eventually quit but I find it interesting that I ever continued. If I ate a food that gave me the same reaction I wouldn’t eat it again. Just saying… tobacco, alcohol, drugs…..all made me sick but it never stopped me. I would get sick in order to get the good feeling that would come later. With smoking I just wanted to be a cool kid with tobacco; with drugs and alcohol I just wanted to get high. Like my body was always screaming “Nooooooooo” and my mind was always saying “Bring it on! It will be awesome once you quit throwing up!”

This is the correct answer. To expand on it: You don't need a fancy machine. Lenses, including our corneas, work both ways. Therefore you can just shine a narrow beam of light into the eye, moving it across the eye serveral times (Skiascopy). If the beam moves across the retina in the opposite direction of the movement of the light, you know the focal point lies in front of the retina. If it moves across in the same direction as the beam, the focal point lies behind. Now you can just hold up test lenses and see with which lens the reflection of the beam of light stops moving, meaning the retina is in focus. This is basically the old school method of doing it, but is much easier explained by drawings or a video.

Can’t win, can’t break even, can’t quit.

Yes, that's my point. You'd have to look up what word descartes uses and how it was translated. Depending on context similar words might get different translations and vice versa.

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It will be carbon neutral in a few decades if you plant new trees to replace them. Otherwise, no.

I wouldn't stress about it too much, though; wood burning is not why the climate is changing, and climate change isn't why wood burning is illegal in your county.

So if I felled my own trees and they are the source of the wood I am burning (which is the case here), is my burning carbon-neutral?

This happened to me! I can close my left eye and nothing in my vision changes, but if I keep the left one open and close the right one, everything jumps to the side. It's funny to keep winking with my right side and watch everything jump back and forth. Eye doctors did try to correct it when I was younger with eye patches, but no luck. Though I think my right eye overcompensated and got worse as a result, as it now has a prescription literally double the strength of the left eye

The implication is that OP is reading a translation. Descartes likely used the word 'esprit', different translations may cause confusion around the word.

This is a great explanation. I have a masters in physics, so let me know if you have a deep question.

In class, we start by learning that “temperature” is a macroscopic quantity, and it is trying to describe the microscopic motion of particles. Heat transfer is really momentum transfer (of small things).

In grad school the class is labeled as statistical mechanics, because the coursework focuses on the statistics of it all.

Some cool concepts are things like heat capacity, which is the amount of energy it takes to change the temperature of a material. Water takes a lot of energy to change the temperature. We learn that this is because of the degrees of freedom that the molecule has. So a single atom can move in 3D, a pair of atoms like H2 can also spin along its axis, and H2O can spin along multiple axis. Each extra degree of freedom means it can store energy in more ways before a it “speed” increase (which is measured by temperature).

One useful application in life is diamonds: real diamonds need more energy to change temp. So if you touch it, and it’s cold, then it’s real. If it’s warm, then it’s fake.

Again, nicely explained. Thank you.

>I've no idea where you got this idea from. The zeroth law is not tautological, can't be derived from the other laws, and (like the third law) is often ignored in pedagogical contexts because of its relative subtletly and obscurity.

The zeroth law is absolutely tautological; it's not remotely needed because the phenomena described by the zeroth law are necessary consequences of the second law.

>Well, the entropy of what? If I put a glass of room-temperature water in the fridge, its entropy will certainly decrease.

I mean, I'm simplifying for the purposes of ELI5.

The correct description only applies to closed systems.

See here:

https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

In summary, the Internet Assigned Numbers Authority officially assigns certain ports for certain services, but in other cases it's just convention, and either way you are completely free to ignore it if you want. For example I'm a web developer and so I routinely run web servers on my laptop for local work, if you're running multiple for different projects you might stick them on 8080, 8081, whatever. Also sometimes people use non-standard ports as a form of security by obscurity. (To continue parent analogy somewhat, imagine if every apartment building was supposed to have a bank vault in apartment 762, it would make it kind of easy for thieves to find, so you might stick it in 638, and have an intermediary stationed at 762 to vet anybody who turns up and only forward known bank customers to the correct place)

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Why can’t port numbers below 49152 act like “Airbnb for applications?” Conversely, why can’t port 49153 and above have, per your analogy, “long-term tenants.” Or can they?

Furthermore, what event on the server would be equivalent to “evicting” a program from its “apartment?”

Nicely explained. I have a follow up question.

Is the email service always on 25 and web service on 80? Basically are they standardized? Or at least mostly agreed on?