Recent comments in /f/science

Brooklington t1_jee3lxg wrote

Reply to comment by beatvox in Ultramassive black hole over 30 billion times mass of our sun has been spotted. The discovery had been made possible thanks to a phenomenon known as gravitational lensing — the first time a black hole has been spotted in such a way. by Wagamaga

The technique used to detect the black hole in this case is to use a model to predict what the image would look like with and without the black hole. The model that fits the data best is consistent with a black hole of the size quoted.

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spanj t1_jee0tn6 wrote

Reply to comment by Brokenspokes68 in New lithium-ion battery recycling method that’s energy efficient and needs no added chemicals by avogadros_number

https://www.frontiersin.org/articles/10.3389/fchem.2020.578044/full

It’s 99%. This doesn’t preclude that you can’t use the first method to recover 70%, and the more environmentally challenging leaching method to recovery the remaining amount. Smaller volume means it’s still a net benefit. Maybe it’s not possible after the initial processing, the paper does not discuss this.

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andylikescandy t1_jee0qv1 wrote

Reply to Gun injuries in US surged during pandemic, CDC study shows by Picture-unrelated

Statistically intuitive: lots of first time gun buyers, coupled with a decrease in access to training.

Even in the best of times, there's a ton of friction in both running training courses and getting training, and that's for people who want it. That's to say nothing of people who simply might encounter one, without knowing anything at all about how to handle one safely (e.g. handling one they come across in someone's home)

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Sparkysparkysparks t1_jeds8ur wrote

Reply to comment by Brain_Hawk in A systematic review and meta-analysis finds yoga has a moderately positive effect on the improvement of depressive symptoms but also their severity. by empty-ego

Yeah - I had a good look at the inclusion criteria and the table of included studies. Lots of them did not have any kind of active control eg waitlist control or none). Therefore we don't really know if yoga is better for these symptoms than just reading a book or stretching or going for a run - or even just doing something new (Hawthorne effect).

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UmdieEcke2 t1_jedn3rg wrote

Reply to comment by alienbaconhybrid in Fast radio bursts used as 'searchlights' to detect gas in Milky Way: Canadian scientists find Galactic Halo weighs much less than previously thought by amanda980

Black holes in the galaxies center tend to only make up a tiny fraction of the whole mass. It's not like our solar system where most mass is caught up in the central body.

The stars orbit the galaxies center not because of the black hole, but mostly due to the mass of all the other stars also swirling around the galaxy. Which from the perspective of a single star is pretty much the same as if all those other suns were part of the black hole.

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JetBlackBoogie t1_jedn0fm wrote

Reply to Research found after six years spent tracking health outcomes among nearly 925,000 Danish seniors, investigators determined that when a man between the ages of 65 and 69 loses his wife he is 70% more likely to die in the year that follows, when compared with his non-widowed peers by Wagamaga

The amount of people who read an article like this and immediately see it as an opportunity for gender point scoring is disgusting.

Imagine you were being so dismissive of your own Father, Brother, or Son.

The point of research like this, at least in part, is to help people. Poking fun at dying elderly men is not helping to resolve anything.

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alienbaconhybrid t1_jedk4mb wrote

Reply to comment by newsreadhjw in A study using eggs reveals why Italian Renaissance masters – artists such as Sandro Botticelli and Leonardo da Vinci – might have added protein to their oil paintings. by molrose96

Yeah, I read the original study which is about how they added egg to their oil paints. Egg tempera involves just egg or milk.

I’ve never heard of that, but the old masters shared their techniques with apprentices in their studios and not with historians.

Only in the last 30 years have we realized they were all using lenses. So, we’re still working out how they did what they did.

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UngilUndy t1_jedibqs wrote

Reply to comment by ViennettaLurker in You might like paintings more if you stop to read the gallery labels - people high in openness, and those with limited art experience, liked paintings more after reading information about the artist and their technique. by Litvi

What about the example I gave communicates the artist's intent though? It's not a verbatim take but I've seen a good chunk of art labelled with such weasel words. The term "spacialities" in particular really annoys me as it is as good as saying "the work takes place in a place". To quote another response I got, it's pseudo-academic blabber.

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