woodenghost
@woodenghost@hexbear.net
- Comment on One photograph. Two daughters. Three Nobel Prizes. 6 hours ago:
I found this on wikipedia:
Irène “was accidentally exposed to polonium when a sealed capsule of the element exploded on her laboratory bench in 1946”. That was from her own work. She lived another ten years, than died from leukemia.
Ève lived to be 102 years old and died in her sleep in 2007.
- Comment on Relativity 2 days ago:
Hate it when I accidentally drive over a lagrange point on my bicycle and the resulting tire wear leads me straight into a wormhole.
- Comment on arborholing 5 days ago:
What are signs of ‘species domestication’?
- Comment on one bright second 1 week ago:
Or imagine it the other way around: The heat death has long started and we live in it. Who knows what kind of civilizations existed in the first quark gluon plasma 10^-12 to 10^-5 seconds after the big bang? They would have been tiny, fast and highly energetic. There are many orders of magnitude in size more between us and the plank length then between us and the observable universe. There’s lots of room down there. To them, we would seem like sluggish giants living off of tiny sparks within the faded light their long dead world set free when the universe became transparent 18,000 years after the big bang.
- Comment on one bright second 1 week ago:
Life could also just slow down a lot, use less energy. It would feel the same. Billions of years go by in a flash on the far end of the bell curve. But no problem, there always more time.
- Comment on Nice. 1 week ago:
Pavlov sits at the bar with some friends enjoying drinks as someone walks in and the door bell rings. He suddenly gets up. “What’s up? Are you leaving?” One of his friends asks. “I just remembered,” he replies. “Got to go feed my dogs.”
- Comment on don't look up :) 2 weeks ago:
Celebratory staff outing with a free picnic to honor a newly discovered comet on safe, far away orbit?
- Comment on wax on 2 weeks ago:
Damn, I somehow thought, that they made it with their mouth or something. Now I can’t stop wondering what that feels like.
- Comment on IT'S A TRAP 3 weeks ago:
There are different ways to compare the “sizes” of infinite set. So you could both be right in different contexts and for different sets. But the one concept people mostly mean, when they say, that some infinities are larger than other, is one to one correspondence (also called “cardinality”):
If you have a set and you can describe how you would choose one element of a second set for each element of the first, than that’s called a one to one correspondence. In that case, people say the two sets have the same cardinality which is one way to define their size (and a very common and useful one).
For example there is a one to one correspondence between the integers and the even integers. The procedure is to just take the integers and multiple each of them by two. So these two sets have the same cardinality and in that sense, the same size.
There is even a procedures that proofs, that the set of the rational numbers has the same cardinality as the natural numbers.
But Cantor proved, that there can never be such a procedure, that established a one to one correspondence between the natural numbers and the reals. So it’s in that sense, that people say the reals form the larger set.
- Comment on IT'S A TRAP 3 weeks ago:
Also almost all real numbers are undefinable. (Unless you’re using a model, that makes them countable.)
So that means, if they are all different, than almost all the “humans” on the bottom track are something we can not even imagine in principle. Wouldn’t be surprised, if infinite Superman’s where among them.
- Comment on 2 OP 5 weeks ago:
Okay, wow, it was true all along. Thanks for sharing that cool video!
- Comment on 2 OP 5 weeks ago:
I tried to research that, but couldn’t find anything. I have to call bullshit.
- Comment on Hue hue hue 5 weeks ago:
It’s fine, the sun send us an heart emoji.
- Comment on It's always Brassica 5 weeks ago:
No, it’s just a joke. But lots of veggies are.
- Comment on IF YOU TAKE ENOUGH YOU CAN SEE *THE PATTERN* BRO 5 weeks ago:
That laser is way too close to his eyes. Anyway, probably just seeing the speckle pattern, which granted, can look really cool and moves with your head as you tilt it.
- Comment on The Pp 1 month ago:
roles can be swapped immediately
must be nice
- Comment on Let's hear it, little lemmings. 1 month ago:
Definitely not Feynman. He developed his whole public clown persona only to distract from his guilt over participating in mass murder. Curie was literally to radioactive to safely get anywhere near to. Her remains are sealed in lead. Which of the other ones had least toxic masculinity?
- Submitted 2 months ago to science_memes@mander.xyz | 3 comments
- Comment on Black Holes 2 months ago:
That was just a metaphor. An event horizon is different from the Hubble radius in several ways.
- Comment on Black Holes 2 months ago:
Actually you wouldn’t notice anything special crossing the event horizon. You’d just continue to fall.
- Comment on it's called speedrunning, my dudes 2 months ago:
Makes you wonder why only one beetle does this. Were the adaptions necessary to survive the digestive acid really complex or really unlikely, maybe?
- Comment on the dunkler 2 months ago:
I spent years never having read or heard of this fish at all, but thankfully that dark dark time in my life just ended.
- Comment on well? 2 months ago:
That’s not an empirical observation nor a new discovery though. It just an analogy that leans on the definition of Schwarzschild Radius. No one is seriously implying, that we’re somehow trapped in a black hole.
In fact, the analogy only holds, if the Hubble parameter is constant and this new result, if it holds up, would still indicate, that it is not constant. As was expected by the standard model of cosmology. If the Hubble constant is decreasing, and consensus is that it does, than the Hubble radius is also different from an event horizon in the following way: light reaching us from more than 5 billion years ago comes from regions that have always been receding from us at speeds faster than light.
- Comment on Obsession 3 months ago:
What?
- Comment on UwU brat mathematician behavior 3 months ago:
But physicists actually do that? They often write it like this: ∫ dx f(x) or this: ∫∫∫ dxdydz f(x,y,z)
- Comment on the unseen worlds 3 months ago:
Ultraviolet induced visible fluorescence photography
Sounds complicated, but it’s just shining UV light on an object in a dark room and taking a normal photo with long exposure. If you want to be pure about only picturing visible light, you might need a UV filter, since many cameras can already see a bit of UV despite inbuilt filters.
- Comment on USA 🇺🇸 USA 🇺🇸 USA 3 months ago:
Yes, fruit is a botanical category, but vegetable is not.
- Comment on we are creators 3 months ago:
Then the inherent contradictions of capitalism really started to hit, quantitative change passed to qualitative change and progress grinded to a halt and science and technology are regressing now in the imperial core.
- Comment on Cursed 3 months ago:
They proved it for n=5 and 10.
- Comment on Jigsaw Trolley Problem 3 months ago:
Yes and because C3 is a golden ball, you should confidently switch to the second door. Because now it’s just the Monty Hall problem with balls instead of goats. When the madman chose a door to opened, he deliberately chose a bad (mixed) door, otherwise he would have given away the correct location. The fact, that he opened the third instead of the second gives you new information, that you can take advantage of by switching, increasing your chances. Had the ball been silver, it might have been revealed to come from a bad door.