I’d like to take this opportunity to highlight a recent discovery that I think should be shouted from every major news outlet. The implications are big, but they’re rather technical and non obvious.

https://www.youtube.com/watch?v=B1PbNTYU0GQ

In short, it turns out water evaporates much faster from to light than heat. Green light with a certain polarization hitting the water surface at a 45 degree angle seems to do best. From the research slides, the effects of polarization and angle might be small. That means green LEDs (which are cheap and very efficient, but wouldn’t be polarized on their own) can evaporate lots of water. Something like 4 times the amount we would get from using the same amount of energy to heat it up. This is being called the photomolecular effect.

This fills in a big gap in our climate models. There have been measurements done on clouds that show water was evaporating much faster than theory would predict. I’m not clear on if it would make the results more pessimistic or not. My guess is that more clouds in the model increase the albedo of the Earth, thus reflecting more light back into space, and the resulting temperature should be lower. But I’ll hold off on strong opinions until the models get updated.

The other big thing is desalination. Most desalination plants don’t use thermal evaporation because it’s too energy intensive. They use reverse osmosis. The photomolecular effect brings up the possibility of an even more efficient solution to drinking water problems.

I haven’t seen academic research into this yet, but I also wonder about the implications for lithium extraction from sea water (and pretty much any other sources, really). Lithium is basically one of the salts you remove during the desalination process, so the photomolecular effect potentially makes sea water extraction cheaper. Lithium from sea water is an indefinite resource–there’s more there than we would know what to do with.

Edit: actually, scratch the desalination aspects.

• Multi-stage flash distillation takes 23-27 kWh to get 1 m3 of water
• RO desalination can get you 1 m3 of water with only 3 kWh

So thermal distillation is almost an order of magnitude behind, and the 4 fold improvement doesn’t fully close that gap. In fact, it’s worse than that. The multi-stage plant works by recovering heat when the distilled water is recondensed. Merely heating water to do this would take 626 kWh per m3. That’s more than two orders of magnitude, and since we can’t benefit from a multistage setup to recover heat when using the photomolecular effect, it’s going to be a 4 fold improvement over that very high number.

Still, very big news for improving our climate models.

Those discoveries benefit all of us in turn. Microwave ovens, digital cameras, water filters, freeze drying, memory foam, and many other inventions we use daily were created by funding scientists to collaboratively solve problems unique to space.

Modern astrophysics exists because a house fell on a teenage orphan.

Who as a result got adopted by a prince.

He got access to a royal lab for glassmaking.

Then he tried fixing color aberration in his microscope lenses.

Then he noticed the rainbow had holes in it. Huh.

Then he died. Glassmaking and tuberculosis are fast friends.

Then Bunsen invented his burner, which made spectra that matched the rainbow holes. Huh.

Now we know what stars and planetary atmospheres are made of!

Thank you. As a layman, I don’t always see the bigger picture. I cannot recall the specifics right meow, but there was some sciency stuff I read about the other day and I was questioning why they would spend money on that, when there are other things to figure out. Maybe one day their results will help with something else.

This is what the show Connections by James Burke was about. It’s available on YouTube.

All the science is connected… Except climate science. That’s voodoo witch talk and we should keep pumping millions of tons of CO2 into the atmosphere. WCGW?

I cannot fucking stand the fact that we live in the year 2024 and we’re having raging debates about if science has value… ON THE FUCKING GODDAMN INTERNET.

This population deserves the hardships coming, and that’s a really, really terrible thing to say, because the coming hardships are going to be bad.

Then you’ve got the lazy scientists that discover things like penicillin and sucralose by pure accident and/or through some pretty shoddy practices.

“Well I think these strange scientists should stop wasting their time peering over microscopes when there’s more important things to do… you know… things that common folk like us can understand and relate to immediately” - any typical anti-reason anti-science (probably religious) dolt, ignorantly vulnerable to things like cholera because they draw their water from the same river where people piss, shit and litter upstream.

I think OOP and I have different definitions of sexy

I agree with the point of the post…

But why did that person put a hash tag at the beginning of every sentence? Maybe the weirdest punctuation usage ever