Scientists shocked: Super-rare metal mysteriously vanishes from lab

morningticker.com ^ | February 26, 2017 | Dan Taylor

[Ozark Tom]

Potentially most powerful chemical explosive at 216 MJ / kg.

[sit-rep]

lol...

[cynwoody]

Best watch those hydrogen balloons around the birthday cake candles.

For some reason party balloons are almost always filled with helium, not hydrogen. This despite helium's higher cost, scarcity on earth, slightly lower lift, lesser opportunity for amusement, and a permeation rate through balloon envelopes almost as bad as hydrogen's.

Of course, you can always make your own hydrogen balloons at home:

https://www.youtube.com/watch?v=755KpMw_Od8

As for permeation, molecule size is not the whole story. For instance, some scientists were able to make very thin membranes out of graphene oxide that "are completely impermeable to liquids, vapors and gases, but allow unimpeded permeation of water (H₂O permeates through the membranes at least 10¹⁰ times faster than He)."

[minnesota_bound]

The metallic hydrogen sank to the center of the Earth.

[gundog]

“Lesser opportunity for amusement?” I think your average parent would rather have their kids speaking in higher voices than reenacting the Hindenberg disaster. Leave the semi-permeable membranes and pressure gradients to science class.

[TXnMA]

Where's Kevmo? Just when he's needed to make excuses... '-)

[TXnMA]

Thank you...

[TXnMA]

You could have achieved the same impact without scatological terminology.

Grow up!

[KingNo155]

No