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Author Topic: Where can I find sunglasses that can see invisible ink?  (Read 1776 times)

Offline thedoc

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muhammad shehbaaz asked the Naked Scientists:
   
I want to purchase sunglasses that can see invisible ink . From where I purchase this glasses . and i want to know the price of this glasses

What do you think?
« Last Edit: 26/01/2015 21:30:01 by _system »


 

Offline CliffordK

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Re: Where can I find sunglasses that can see invisible ink?
« Reply #1 on: 26/01/2015 23:09:59 »
Hmmm...  interesting question.
There are several types of "invisible ink", with perhaps the heat sensitive and UV sensitive inks being the most well known. 

I think you really need a darkened room and a UV light source.  There are glasses with white LED lights that might be able to be modified with UV emitters.
 

Offline RD

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Re: Where can I find sunglasses that can see invisible ink?
« Reply #2 on: 26/01/2015 23:42:57 »
Polarizing sunglasses can be used ...

Answering your next question : the casino will break your thumbs if they catch you.
 

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Re: Where can I find sunglasses that can see invisible ink?
« Reply #2 on: 26/01/2015 23:42:57 »

 

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