Again, anecdotally; I've found amongst the older folks that those engaged in discussion and interaction keep their wits about them longer/easier than those bound by isolation.
Anyway, enough babbling on - time to go do some research.
They could for example check how bounciness changes when a battery is filled with a gel-like substance which could then be frozen.
You can find plenty of videos on youtube showing you the process, for instance: https://www.youtube.com/watch?v=BliWUHSOalU
Assuming that they are that easy to accidentally short them out.
Should they not be a banned from being taken in the cabin?
Lithium _Ion_ batteries produced today are newer designs which use an intercalated Lithium compound (usually with Cobalt, Iron or Manganese) which greatly improves the stability of the battery while under stress. Further to that, pressure venting is almost always incorporated into the canister enclosing the cell, allowing it to depressurize in a safe manner similar to capacitors.
That's not to say they are totally safe - all batteries require a great deal of care and not all Lithium batteries incorporate these safety features. The pouch cells used in RC aircraft, for example can catch fire fairly easily due to their lack of a strong outer shell, their extreme power density and lack of any protection circuitry. These are heavily regulated and you would not be allowed to take them in your carry-on, and all Lithium Ion batteries over a certain Wh rating are similarly controlled.
Speaking at least for Canadian airlines, you're incorrect - I asked ahead, and was told that I could bring them, but _must_ have them in my carry on. (and protect the connectors, etc.)
Lithium batteries have vents, so they don't explode they just "phhuut".
or Gallium https://www.youtube.com/watch?v=Z7Ilxsu-JlY
could do. Happy flying!
They can be: https://www.youtube.com/watch?v=CH6GpXAXmx8
Still very interesting to see the electrolyte though.
Don't go and turn anything into a fine powder!
Probably the most risky thing they did here was cutting up the batteries with a hacksaw which will create a bit of sawdust composed of metal and some electrolyte. But that's pretty easy to get rid of and won't become airborne. Using a grinder for the same job would be much more dangerous.
"After Slotin's accident, hands-on criticality experiments were stopped, and remote-control machines were designed by Schreiber, one of the survivors, to perform such experiments with all personnel at a quarter mile distance." Note: "After"... so what was the situation before?...
MSDS: material safety data sheet.
Just what is it that's inside the BLY90 that's so bad?
It's almost certainly a regional thing.
I think this is a Feedly problem, not an HN RSS problem, because it works fine in Digg Reader.
I'm curious if others have noticed this. I believe when someone posted a poll question here asking what RSS readers people switched to after Google Reader went away, Feedly was one of the most popular.
On the other hand, as long as you make a comment like this when you change a link, it alleviates the problem pretty well.