Tapatalk

[Diapason]

I installed it, didn't like it, uninstalled it.

Maybe I'm being dim, but why do people find it so difficult to post pics under normal circumstances?

(Am I just being cranky today?)

[Ivor]

I installed it, didn't like it, uninstalled it.

Maybe I'm being dim, but why do people find it so difficult to post pics under normal circumstances?

(Am I just being cranky today?)

Much the same here but I didn't uninstall it. I just view the forums in the usual way. I'll probably have a good look at it at some stage but yeah, uploading pics was never a problem.

[jkeny]

Maybe it's me being dim but anytime I try to link to a picture's link with the img tags, I don't get it displayed - just the unresolved link

OK this one worked - it's of an experiment that went wrong on 21st August (anniversary yesterday) 1945 in Los Alamos on Demon Core - the ball of plutonium used in the first atomic bomb. One of the scientists, Stolin, doing a critical mass test dropped a Beryllium brick on the core & caused it to go supercritical for about half a second - he died 25 days later of radiation posioning

Another mistake made a year later in the mass going supercritical was when a scientist slipped his screwdriver which was all that was keeping the two hemispheres apart. This experiment had the evocative & imaginative name "tickling the dragon's tail"

More here under demon core http://en.wikipedia.org/wiki/Demon_core

[Gerry D]

What's a demon core John ?

[jkeny]

What's a demon core John ?

I bet you thought it was a heavy metal band?

[Gerry D]

Probably is a band called that. What's a demon core though ? :)

[jkeny]

Probably is a band called that. What's a demon core though ? :)

It's explained in my post which I was probably editing when you read it

[Gerry D]

Ok. Ta. Timing. I'm in the pub now. Looking forward to reading complete post tomorrow.

[Diapason]

I love a birra nuclear physics of a Friday evening. Great stuff, John.

[jkeny]

I love a birra nuclear physics of a Friday evening. Great stuff, John.

It makes science real - just a load of blokes doing crazy things & blowing stuff up, eh? Reminds me of the computer audio section :)

Here's the other picture - remember this goes supercritical & becomes a nuclear explosion if this guy slips & the screwdriver is pulled out from between the two hemispheres of plutonium - crazy.