Hospital surplus?

Gordon JC Pearce gordonjcp at
Mon Apr 3 14:15:20 CDT 2006

John Allain wrote:
>> Why? Radiation is like light - shine a flashlight at something
>> (non-phosphoric, pedants! ;) and it doesn't continue glowing.
> Cotton must be phosphoric then.  Hit it with a strobe
> unit and it will glow for a second or two afterwards.

It's the whitening agents in soap powder.  Try it with a UV source - 
even the el-cheapo LED torches off eBay.  Then try just the soap powder.

Oh, and if you really want to kill a lot of time with a basin of hot 
disinfectanty water, shine said UV source on the inside of your fridge. 
  Even if you think it's clean.


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