Neat! Cody's Lab did something I've long wished to try but couldn't get it to work this nicely: using an infrared camera to observe the heat released by the phase change of supercooled water freezing:
[youtube]YyHogH2bFc8[/youtube]
It reminds me a dream I had a few weeks agoGeneral relativistically accurate video of the view on an orbit around Sagittarius A*
Aye, it's a fun subject. In an earlier science questions thread discussion, I pointed out CP violations as an example of when a presumed law of nature was found to be incorrect. Sometimes in physics we encounter a behavior that appears so highly systematic, or so theoretically sensible or aesthetic, that "It must be a law!"... and later find that there are exceptions.
That was a lot of work to get a small piece of metal! Interesting, but I'm left a bit undecided whether he extracted a nice piece of metal or destroyed a nice piece of ore and created a lot of toxic waste...
Same. The ore itself and the geology behind it is interesting, while the process for refining it into solid uranium metal is also interesting (particularly all the chemistry involved and the different ionization states the uranium shows). I was fairly concerned with how he would manage with the various safety issues, but it looks like he knows what he's doing and did a good job recovering the waste with plans for how to recover it further or condense it down to a safer form. I would not trust most edutainment youtubers with this kind of activity!
I hope they talk about closed timelike curves Thanks for all these amazing videos!PBS Space Time is going into depth on Hawking Radiation and the nature of the vacuum near event horizons, with more to come in this new mini-series of videos.
[youtube]bG-xu5H6plk[/youtube]