Childhood DIY experiments

Jul 18, 2009 130 Replies

I remember that stuff well - and being deaf in left ear for ten minutes and in my right for 5 hours!

It worked well painted onto the underside of plastic chairs (once dry, exploding when someone sat down and flexed them) or supposedly in one case, painted along the tops of the radiators in the biology lab (until the teacher shouted too loudly).

SteveW

The watered down school lab stuff seemed to do it just fine...

Thing with hydrogen sulphide is that although it's toxic, it's far stinkier, so you run away because of the smell before it's too bad.

Carbon tet + bleach sounds unlikely. (googles). Acetone + bleach sounds rather more likely.

Reading all the posts in this thread is it any wonder that Britons have won so many Nobel Prizes?

Except at high concentrations when it overwhelms your olfactory receptors (or stuns them) and you cease smelling it. So if you can't smell it, levels have either fallen or risen to a lethal level. ;-)

Tim

I see your Collins Gem and raise the OED:

  1. trans. To give an electric shock to; esp. (chiefly refl. or in pass.) to kill or injure by electric shock.

People use it to mean injure, so it has come to mean injure.

You can still buy concentrated ammonia in some hardware stores. I have a feeling Robert Dyas still sell it. For the iodine crystals, you'd have to obtain them from tincture of iodine and allow the alcohol to evaporate.

Not sure - maybe it's more surprising that more of them haven't won Darwins, actually...

Well, being careless and stupid can really further the learning experience. It's only when you're careless, stupid and unlucky that the problems really occur ;)

cheers

Jules

And I suppose that by definition it's only the guys who haven't had such 'problems' are still around to post their war-stories here!

David

In message , Clive George writes

Thing with hydrogen sulphide is that it kills nerves, so a high enough concentration of it and you can't smell it (or anything else).

In message , PeterC writes

Ahh, fair enough. Just mustard gas then.

In message , Tim S writes

Ohh, forgot about that, back in the day when fireworks were actually close to being worth the money they used to 'leak' in the boxes. Collecting all the leaked contents from whatever bonfire party I was taken to became a bit of an obsession.

Not done that myself, I'd say I'd lead a sheltered life but I know otherwise..

Yep. An aerosol full of black paint and a .22 pellet. It took a week to wash the paint off my face.

Adam

John

Have you seen this news report about Tasers?

formatting link
funny but interesting.

Adam

Could have been worse - expanding foam?

David

Nah. Yellow paint can (for my Mums old N reg Mini) and I gave my Dad the air rifle and told him that even an old git could not miss from that range. He took the bait.

Ouch. One work suit ruined.

Adam

Our Airsporter was effective on such a can at 25 yards - the contents of the can weren't.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required