Recent comments in /f/explainlikeimfive

breckenridgeback t1_j29tf9m wrote

Reply to comment by phiwong in eli5 Atoms being mostly empty by NTOK21

In fact, this is only part of the story. Degeneracy pressure contributes pretty meaningfully to the "solidness" of solids, so insofar as the idea of "empty space" even makes sense, atoms are not "mostly empty".

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phiwong t1_j29sreo wrote

Imagine a really large powerful set of magnets arranged in a row with all their alignments of the N pole pointing the same way. Now try to move another magnet of the same N pole towards the magnets. It's all "empty" space but the magnetic fields won't allow the other magnet through the first set of magnets.

The point is that "empty" is not really a good way to think of it. There are charges that cause an electric field (usually electrons) and whatever you think of "phasing" through also has charges. Those fields repel each other. Therefore the "phasing" won't work.

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Im-Falling-Apart t1_j29s52j wrote

Sadly if people didn’t buy them they wouldn’t exist. The truth is people do buy them. You probably don’t see it but they do buy them. Why anyone would want to read that crap about celebs I don’t know. I never cared a rats ass about celebs and how they lived and their “poor baby” troubles.

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Gnonthgol t1_j29s00o wrote

The fact that you never see anyone buy them only means that people in your social circle is not buying tabloids. The tabloids still find a market in less educated social circles. The fact that the stories are not true does not mean as much because they do form the background to a lot of discussions in these circles.

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NullOfficer t1_j29rz54 wrote

They're usually owned by larger media companies who publish legitimate articles and those publications are paid for and financed by ads and the stores like supermarkets that pay to stock them.

Also as another person said, people are stupid, gullible, vain, and bored.

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theclash06013 t1_j29rq48 wrote

The answer varies from snake to snake. Most venomous snakes have special antibodies that make them immune to their own venom, though some are not. This immunity can range from full immunity to the venom of any snake of their species to a partial immunity to just their own personal venom. This is similar to the human body. For example when you transplant an organ from one person to another the recipient's immune system recognizes that the transplanted organ is not theirs and will attack it, a process known as "rejection," unless the recipient takes drugs that suppress their immune system. Similarly a snake's immune system can tell which venom comes from that particular snake, and in some instances can fights it off so effectively that there is no impact whatsoever.

Snakes avoid getting their own venom into themselves based upon which fang structure they have.

Vipers like the Diamondback Rattlesnake are known as solenoglyphous snakes. If you look at the first picture you can see that there is flesh and muscles around the fang of a viper. In the second image, which shows the skull of a Diamondback Rattlesnake, you can see that there is a hinge attaching the fang to the jaw. These kinds of snakes are able to fold their fangs against the inside of their mouth when they are not in use to avoid biting accidentally or biting themselves. You can also see how the fangs are curved, so they wouldn't bite the jaw of the snake even if extended. These fangs can be up to two inches long.

Proteroglyphous snakes, such as King Cobras, Coral Snakes, and Black Mambas have fixed fangs which cannot fold up. These snakes have shorter fangs that cannot reach the bottom of their mouth so they cannot accidentally bite themselves. They are also curved a bit for that same reason.

Opisthoglyphous snakes, such as the Boomslang, have fangs which are located towards the back of their mouth rather than up front. This means that they have to get a good hold of something to inject venom. Most rear-fanged snakes are relatively harmless to humans, but some of them, such as the aforementioned Boomslang, are incredibly dangerous.

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KnitYourOwnSpaceship t1_j29r6jk wrote

I've sondered the same, and my theory is that you're also disturbing the air under the blanket when you move your foot. Sticking part of yourself outside the blanket gives the chance for colder air from the room to move under the blanket. It's not a complete change of all the trapped air, but enough to make a difference pretty quickly.

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tomalator t1_j29r3m1 wrote

Yeah, that's because the engine can't handle that kind of heat. It's still the same principle of removing heat from combusted fuel. If there were no radiators in a car, the heat would stay in the exhaust and engine.

The point is combustion produces heat, and we can remove that heat without touching the fumes. It doesn't become exhaust until.we want to get rid of it

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macedonianmoper t1_j29qsl7 wrote

Keep in mind that if you have one foot out the blankets are most likely not perfectly closed so air from outside can come in so it's not just the cooler blood circulating in your veins, it's also that the moment you put your foot outside the entire air below the blankets also cooled

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Amazingawesomator t1_j29qieu wrote

Informational: An interesting DRM invention in the PS1, was the "bounce" that all PS1 discs had at the beginning of the read.

The lazer would follow the read path of the disc, and watch for a specific wobble. If the wobble was there, the DRM passed, and the disc would load.

You would often hear people touting that you could place a ps1 disc in the tray to get it started (with the "lid-closed" pin held down with tape), then swap out the disc to a burned one to play it. This would work because of that drm system :D

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PD_31 t1_j29qh63 wrote

The effect comes from the pressure exerted: the force divided by the area it acts over. The tip of a bullet has a very low area thus a very high pressure because all the force acts through a single point. The recoil is an equivalent force but the gun is held in one or both hands so the force pushes up the arms to the body and acts against your whole body mass, thus dissipating its effect.

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ZAFJB t1_j29pvy9 wrote

> The same thing happens to heat a gas car, it's just using waste heat from the engine.

Most cars do not use exhaust heat to heat the cabin. They use a water to air heat exchanger that extracts heat from the water cooling system. So, combustion heats water >> water heats air.

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dkf295 t1_j29pvn5 wrote

To add on to it, same reason why being hit in the hand with a baseball line drive will probably break your hand, but you're fine swinging the bat.

The force is distributed over a larger area - less force is applied on any given area, so it does less damage

The force is spread over a longer period of time so the amount of force at any given time is going to be lower.

Similarly with a gun, the recoil is going to be in the neighborhood of 0.45m/s. The bullet is going to be traveling at 370m/s. The bullet is going to apply all of its force hundreds of times faster than the gun, on a dramatically smaller surface area.

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frustrated_staff t1_j29pkdh wrote

Hacks, cracks, and jacks.

Hacks are tools that allow you to take a straight copy/paste and edit some portion of the code so that a copy check always passes. (Breaking the lock)

Cracks are tools that allow you to use other programs to create codes or keys that will pass any verification check (think of a key-duplicating machine at a hardware store)

Jacks: straight up copies of stuff that doesn't even have a lock on it, or one that's so simple it can be bypassed just by pushing hard enough.

But, everything starts with a straight-up copy/paste of the original software.

1

ZAFJB t1_j29p2l9 wrote

The combustion changer takes in air from, and exhausts fumes to, outside of the room.

A heat exchanger transfers the combustion heat to the room air.

The heat exchanger circuit is hermetically isolated from the combustion chamber.

       ╔═══════════════════════════════════════════╗
       ║                                           ║
       ║                 Room                      ║
       ║                                           ║
       ║     ┌───────────────┐                     ║
───────╨─────┘ ┌───────────┐ │                     ║
> Air in       │           └─┴────────────         ║
───────╥─────┐ │           Hot room air out >      ║
       ║     │ │           ┌─┬────────────         ║
       ║     │ │           │ │                     ║
       ║     │ │           │ │                     ║
       ║     │ │           └─┴────────────         ║
       ║     │ │           Cold room air in <      ║
───────╨─────┘ │           ┌─┬────────────         ║
< Exhaust out  │   Heat    │ │                     ║
───────╥─────┐ │ exchanger │ │                     ║
       ║     │ └───────────┘ │                     ║
       ║     │   Combustion  │                     ║
       ║     │     chamber   │                     ║
       ║     └───────────────┘                     ║
       ║                                           ║
       ║                                           ║
       ╚═══════════════════════════════════════════╝
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