DB's absolutely amazing sci/tech thread

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thoreau
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Re: DB's absolutely amazing sci/tech thread

Post by thoreau »

Evil Fiziks Types have verified the inverse square law of gravity down to 50 microns (5000 nanometers).

https://arstechnica.com/science/2020/04 ... passes/#p3

This is the sort of precision experimental work that, no joke, makes America great. As long as we have a scientific community capable of this kind of precision, we can do some freakin' hard science and engineering.
" Columbus wasn’t a profile in courage or brilliance despite the odds, he was a dumb motherfucker that got lucky. Oddly, that makes him the perfect talisman for the Trump era."
--Mo
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Kolohe
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Re: DB's absolutely amazing sci/tech thread

Post by Kolohe »

The technical achievement of the experimental apparatus is impressive, but isn't 50 microns quite large if we're trying to hash out the differences and nuances of the 4 different main forces?
when you wake up as the queen of the n=1 kingdom and mount your steed non sequiturius, do you look out upon all you survey and think “damn, it feels good to be a green idea sleeping furiously?" - dhex
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thoreau
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Re: DB's absolutely amazing sci/tech thread

Post by thoreau »

Kolohe wrote: 06 Apr 2020, 18:28 The technical achievement of the experimental apparatus is impressive, but isn't 50 microns quite large if we're trying to hash out the differences and nuances of the 4 different main forces?
It's quite large by string theory standards, but string theory isn't science.

More seriously, while we don't have any well-motivated theories for gravity deviating from Newtonian (or relativistic) predictions at a scale of 50 microns, the job of an experimentalist is to test our understanding of the universe as well as they can, not as well as the theorists want them to. This is better than anyone has done before, so it's an achievement.

Also, people are working towards experiments that involve gravitational interactions between entangled particles. (Yes, really.) Such experiments would be crucial for settling the question of whether quantized gravity is even a thing worth studying. Studying gravity on 50 micron length scales actually does matter for those experiments.
" Columbus wasn’t a profile in courage or brilliance despite the odds, he was a dumb motherfucker that got lucky. Oddly, that makes him the perfect talisman for the Trump era."
--Mo
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Kolohe
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Re: DB's absolutely amazing sci/tech thread

Post by Kolohe »

Fair enough. Frankly, I didn't have a feel for how big 50 microns was till looking it up, and saw 'about the width of a human hair'. Which then made me think 'well I can see that, so that seems very big for tiny fiziks'
when you wake up as the queen of the n=1 kingdom and mount your steed non sequiturius, do you look out upon all you survey and think “damn, it feels good to be a green idea sleeping furiously?" - dhex
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JD
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Re: DB's absolutely amazing sci/tech thread

Post by JD »

Fiziks Iz weird: particles traveling through the vacuum of space can emit flashes of gamma radiation. How? Well, charged particles traveling faster than the speed of light in a medium cause Cherenkov emission. But in the vacuum of space? It turns out that virtual particles interacting with the extremely strong electromagnetic fields around neutron stars can create a "medium" that slows down the local velocity of light. High-velocity charged particles enter and emit gamma radiation as Cherenkov emission. This may explain some heretofore unexplained sources of gamma radiation.

https://www.sciencedaily.com/releases/2 ... 104247.htm
I sort of feel like a sucker about aspiring to be intellectually rigorous when I could just go on twitter and say capitalism causes space herpes and no one will challenge me on it. - Hugh Akston
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Aresen
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Re: DB's absolutely amazing sci/tech thread

Post by Aresen »

If Trump supporters wanted a tough guy, why did they elect such a whiny bitch? - Mo

Those who know history are doomed to deja vu. - the innominate one

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thoreau
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Re: DB's absolutely amazing sci/tech thread

Post by thoreau »

Blood transfusions from physically fit mice help fat sedentary mice become energetic and alert.

https://www.nature.com/articles/d41586-020-02068-z

I shall be the supervillain who draws his powers from Crossfit customers.
" Columbus wasn’t a profile in courage or brilliance despite the odds, he was a dumb motherfucker that got lucky. Oddly, that makes him the perfect talisman for the Trump era."
--Mo
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