It can be - https://en.wikipedia.org/wiki/Green_flash
That's refraction not scattering though.
Readit Newss0rce commented on Why Is the Sky Blue? explainers.blog/posts/why... · Posted by u/udit99
With a crystal of the right dimensions and correct input voltage could one feel the crystal vibrating?
There are piezo actuators you could certainly feel but not sure they are made of quartz, maybe PZT.
s0rce commented on Spotlighting the World Factbook as We Bid a Fond Farewell cia.gov/stories/story/spo... · Posted by u/mxfh
The Anguilla summary has 2020 population data, but some of the data is indeed much older:
https://simonw.github.io/cia-world-factbook-2020/attachments...
I meant the website looks like 1995
s0rce commented on Spotlighting the World Factbook as We Bid a Fond Farewell cia.gov/stories/story/spo... · Posted by u/mxfh
I managed to pull a zip file archive of the 2020 edition from the Internet Archive - I've uploaded the contents of that zip file to this GitHub repo: https://github.com/simonw/cia-world-factbook-2020
And turned on GitHub Pages so you can browse it here: https://simonw.github.io/cia-world-factbook-2020/
Looks more like 1995
s0rce commented on Coffee as a staining agent substitute in electron microscopy phys.org/news/2026-01-cof... · Posted by u/PaulHoule
Even without any heavy metal staining, you would end up seeing some structures. This approach allows looking at unstained / native tissue.
What is the coffee doing?
s0rce commented on Coffee as a staining agent substitute in electron microscopy phys.org/news/2026-01-cof... · Posted by u/PaulHoule
I don't really understand how coffee, lacking heavy metals, can effectively give contrast in the electron microscope. I can't access the paper but the available parts didn't seem to explain how this works.
s0rce commented on Coffee as a staining agent substitute in electron microscopy phys.org/news/2026-01-cof... · Posted by u/PaulHoule
Wow you know it’s a fun party when the first result needs to specify it’s _not_ radioactive
Oh I see - Uranyl Acetate is radioactive and this replaces it. Fun!
This seems like a friendly chemical too - “ The chemical properties of Osmium Tetroxide are such that use and handling of the chemical is often considered daunting. Although its volatility and toxicity certainly makes it a dangerous chemical, but when following the proper procedure and taking the necessary precautions, Osmium Tetroxide can be used to its full potential with limited risk to the user.
This is more toxic than glutaraldehyde and has a higher vapour pressure. Particular care must be taken to avoid breathing the vapour or allowing it to affect the eyes. ”
Uranyl acetate for staining is typically depleted and unless you have regulatory issues I don't think the radiation is a big concern, especially when you compare to the very serious toxicity of OsO4 (vapors can react with your eyes and blind you).
s0rce commented on Scientist who helped eradicate smallpox dies at age 89 scientificamerican.com/ar... · Posted by u/CrossVR
That's got to be one of the greatest legacies in all human history. No politician or other empire-builder comes close.
Norman Borlaug probably comes close. H. Trendley Dean was also impactful on a large scale, while its seemingly less important it helps a lot of people.
Historically I've found sleepinginairports.net useful for this kind of intel—I was pleased to discover just now that it's still around! Nearly 20 years ago now it saved me from a night of awful sleep. My backpacking buddy and I had just arrived in Liverpool with an early Ryanair flight out the following morning, and no hostel reservations. We'd been traveling successfully without reservations for a bit, but it turned out there was some kind of event that weekend in Liverpool and there was absolutely nowhere to stay (or at least, nothing that cost less than, like, the budget for our entire trip).
We decided we'd just stay out late, then go to the airport and wait it out for our flight. After some effort trying to sleep on hard plastic benches in the airport Burger King (where Michael Jackson's Thriller was playing loudly on repeat, I do not know why), I pulled out my 12" PowerBook and found out via that site that the airport had a meditation room with dim lighting, soft carpet, and no Michael Jackson. Ahh.
Random events are the worst. I was driving through Bend, OR and planned to grab a hotel room but everything was completely booked. Ended up just driving up a random forest road (public land, legal to camp) and sleeping in my tent. Was walking around with my headlamp in the night and some cops came by and asked what I was up to since people are often doing drugs there. Great. They came by and woke me up during the night again and I asked them to please keep record that I'm not up to anything so I could sleep.
I wonder if there's a way to tax the frivolous submissions. There could be a submission fee that would be fully reimbursed iff the submission is actually accepted for publication. If you're confident in your paper, you can think of it as a deposit. If you're spamming journals, you're just going to pay for the wasted time.
Maybe you get reimbursed for half as long as there are no obvious hallucinations.
That would be tricky, I often submitted to multiple high impact journals going down the list until someone accepted it. You try to ballpark where you can go but it can be worth aiming high. Maybe this isn't a problem and there should be payment for the efforts to screen the paper but then I would expect the reviewers to be paid for their time.