Recent comments in /f/explainlikeimfive

_OBAFGKM_ t1_j20zyl4 wrote

metric is actually fairly arbitrary. AU and pc are so much more useful in astronomy because they're derived from actual physical quantities that affect the measurements we make. it's so so easy to write down fundamental astronomical equations in terms of parsecs, whereas if you used metric you would need to include some sort of conversion factor

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wappledilly t1_j20zwan wrote

Fun fact for anyone who gives a shit:

For standard mail access and transmission, ports 25 (SMTP, sending) and 143 (IMAP, receiving) have been largely replaced by 587/465 and 993 respectively to facilitate SSL/TLS encryption. In some cases IMAP is absent from primary use and may be disabled by default (Microsoft, where Exchange services are primary, and Google, where MAPI is heavily utilized), but are still available for compatibility purposes.

Some legacy services still utilize 25 for sending alerts, but most everything recent allows for SMTPS for mail-enabled services.

The more you know (cue the rainbow ->🌈)

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Flair_Helper t1_j20ylpg wrote

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PckMan t1_j20y8xf wrote

Technically both are correct. The more food you eat, the more energy you get. Professional athletes eat a lot of food because they have high intensity work outs every day and they need a lot of energy. If however someone eats a lot but doesn't use the energy the food offers, then our bodies create adipose tissue, fat, which essentially stores this energy to be used at a later time. The problem is that if you live a sedentary lifestyle and you eat a lot you never use up this fat, since the body will always prioritise freshly consumed food over fat deposits, so in order to lose the fat you either need to require more energy than your food provides, as in working out but at the same time regulating how much you eat, or not eating at all, which is dangerous to do since aside from energy we also get nutrients and vitamins from our food.

Moreover how much fat your body creates and how much it burns is also affected by other factors since everyone's body and metabolism may work differently. Some people get fatter easier than others. In general it's good to have an active life style and walk often, work out at least a few times a week. Not everyone has to be a ripped demigod but a sedentary lifestyle can be really damaging to health, and becoming obese on top of that makes it even worse since it contributes to a host of health problems, mainly heart problems but also joint problems, respiratory problems, dermatological problems and many others.

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autiwa t1_j20xyfy wrote

In short, you always take a unit so that your values are around 1, because they are the number that make sense to us and are easier to compare. In subatomic, you even transform everything so your references are just 1. Weird at first, but powerfull to do calculation easily.

That's why physicist always come up with new units, even though they are just derivative of common units (planck length, time, angstrom, nm, micrometer), To each unit it's reference:

  • angstrom: atom

  • meter: human

  • kilometer: geographical distances (you don't say that Paris is 800 000 meters from Bordeaux, right?)

  • AU: solar systems

  • parsec: galaxies and beyond (with kpc and Mpc)

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atomfullerene t1_j20wn41 wrote

Huh, I'd never really noticed before how heavily non-metric distance measurements in space are.

I think the reason is that the benefits of metric come from convertibility. Metric's really handy if you need to estimate the mass of a cubic volume of something, or move between mm and km, or get the amount of energy needed to move some mass some distance.

But in space, your distance measurements are all just distance. You aren't using them with other units, typically, so there's no real drive to make them metric. Instead they stick to the older method of using measurements that are convenient for the particular specific context they are being used in.

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Wanderslost t1_j20vrrv wrote

Thank you for your time.

I manufacture acrylic dice. I have 3 introductory (pantone C) colors that I just picked out because I liked them. The essence of my problem is I would like to offer 3 sets of 12 colors based off of these original colors. But I don't know how to pick the future pantones, though I have the original codes.

For bonus points. I thought it would be interesting if each set of 12 colors used a different color theory. However, I would settle for just making the house standard the painter's color wheels (ryb).

Not much translation needs to happen here. I provide the Pantone number, and they do it. The final product just needs to make sense with the dice already made. My comments above about pdfs and such was just a description of my (failed) attempts to figure this out.

Thanks again!

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BxMxK t1_j20v8zw wrote

After waiting 30+ minutes on a late crew member from another flight in Albuquerque we had to wait over an hour to take off because Denver had too many planes on the ground.

Once in Denver the Southwest Pilot was trying to convince people that they were having difficulty getting fuel into the planes... as though it were freezing. It was single digit temperatures and well above what jet fuel freezes at.

Had to wait 3hrs in line for a gate to park the plane at and then another 45min or so for maintenance crew to fix jetway that wouldn't extend out to the plane.

Finally took 2 trains to get to St Louis because Southwest dropped the ball, kicked it off a cliff, and watched this Christmas go sailing off into the distance.

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TheLuminary t1_j20tdtp wrote

I think that the practical use for the knowledge of the difference between a MiB and a MB, is much more limited than the knowledge of the difference between a M and a G.

Thus, even if they don't understand that MiB is 2^20 and that MB is 10^6, they will understand that Gx is near enough 3 orders of magnitude larger than Mx. Which in the case of stellar distances, is good enough, IMHO anyways.

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bbqroast t1_j20tdme wrote

In addition to bugs that can survive the pH of your stomach, there's also toxins in the food.

E-coli and such will produce toxins that remain in the food even if it's cooked/prepared in a way that kills all the live e-coli. That's why sometimes you get very sick after eating something but it passes quickly - you're just sick while your body purges the toxins out of your gut, but there's no live bacteria/viruses that take up residence in your body.

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