Naked Science Forum

Non Life Sciences => Technology => Topic started by: thedoc on 26/01/2015 21:30:01

Title: Where can I find sunglasses that can see invisible ink?
Post by: thedoc on 26/01/2015 21:30:01

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?

Title: Re: Where can I find sunglasses that can see invisible ink?
Post by: CliffordK on 26/01/2015 23:09:59

Hmmm...  interesting question.
There are several types of "invisible ink (http://en.wikipedia.org/wiki/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 (http://www.bestmassage.com/opticbrights-led-reading-glasses.html) that might be able to be modified with UV emitters.

Title: Re: Where can I find sunglasses that can see invisible ink?
Post by: RD 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.