knightly the Sneptaur @ knightly @pawb.social

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2 yr. ago

Lets see, 80 visible cars and only one of them is blue.

Given that blue cars make up about 8% of those on the road, the odds of a random assortment of 80 having only 1 blue car is about 5/32, or just a bit under 16%.

So, unlikely, but not notably so. Given that there are about 140 million cars in use in the US, if we grouped them all into random sets of 80 cars we'd expect to get 265,500 sets with 1 blue car.

I think I was pretty clear about that when I said that anything that isn't in a good fire safe would be toast..

That's neato!

I wondered how they kept nuclear interactions from decohering electron-based quantum systems, turns out they just weren't. XD

If you're on Android, grab PipePipe from the F-droid store. That'll handle the mobile use case and block ads and skip sponsored segments at the same time.

Modern homes go up like kindling because of all the plastics. After an hour, anything that isn't in a good fire safe is going to be toast.

When it comes to music videos on youtube, it's best to save a copy in case the video gets taken down in the future.

That exists as a product you can buy. They call them "Blast Diverters" or "Blast Projectors":

This is an actual product:

They're called "Blast Diverters" or "Blast Projectors", and they're technically a safety device that directs the sound waves from gunfire downrange, reducing the impact on the user's ears without falling afoul of the restrictions on suppressors.

Epidemic, here we come!

I think you'll find that it's much easier to fight the system when you aren't on its lists.

Nah, bongwater is more like ashes in water.

Short version: forces applied to solid objects move at the speed of sound in that object.

Lets say your stick is made of steel. The speed of sound in steel is about 19,000 feet/second. Assuming you could push hard enough for the force to be felt on the other end, it'd take over 18 hours for your partner on Earth to feel your push from the moon.

No problem! I love getting into the comments under articles on quantum stuff 'cuz the topic is weirdly unintuitive from the classical perspective and a lot of folks share some common misconceptions about jargon like "teleportation" and "entanglement". Please do ask if you've got any other questions! 😄

It's real, but the jargon is unintuitive.

"Teleportation" in the field of quantum mechanics refers to the process by which a quantum state can be copied from one place to another.

This process is like Shrodinger's Cat, both alive and dead until you open the box to check. Quantum information simply does not exist until a measurement collapses it into back into classical information, so copying a quantum state literally involves teleporting the information about it from sender to receiver without allowing the box to be opened during the transition.

I think they were making a joke about the bluetooth protocol rather than literally describing the electromagnetic field.

Yes. Information is what's being teleported. The photons that carry the information still have to travel from sender to recipient but the information they contain doesn't exist until it is received. Like how Shrodinger's Cat is both alive and dead until you open the box to check.

Nah, this technique is more like having a Shrodinger's Cat that's in two places at once. It won't collapse the tyrrany of space, but it will allow us to build bigger and better quantum computers.

As confusing as it seems, they're correct. A physical medium is still necessary to enable the two parties to interact with each other, but the information that travels through it doesn't exist until it is received.

The photons that carry the information are Shrodinger's Cat, both alive and dead until the box is opened. It's impossible to know one way or another without checking, so the information about the contents of the box doesn't physically exist until then.

This has been proven via the double-slit experiment. Shining a beam of light at a card with two slits in it causes the resulting shadow to show a diffraction pattern. This is caused by the photons interacting with themselves as they pass through both slits simultaneously. However, if you put a photon detector in front of one slit to try and measure which slit the photon passes through, the diffraction pattern dissapears because the act of measuring it collapses the quantum uncertainty and prevents the photon from passing through both slits and interacting with itself. The information about which slit the photon actually passed through simply does not exist, and can't be measured without destroying the quantum diffraction pattern.

It is teleportation, but the thing being teleported is information about a quantum state.

The particles that carry this information are in a quantum superposition, like Shrodinger's Cat. Because of quantum physics, the information they carry doesn't exist until you open the box and measure it.

They call it "teleportation" because it allows us to copy quantum information from one place to another without ever opening the box and collapsing the superposition at any point inbetween.