Where can I find sunglasses that can see invisible ink?

  • 2 Replies
  • 1829 Views

0 Members and 1 Guest are viewing this topic.

*

Offline thedoc

  • Forum Admin
  • Administrator
  • Sr. Member
  • *****
  • 513
    • View Profile
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

  • Neilep Level Member
  • ******
  • 6321
  • Site Moderator
    • View Profile
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

  • Neilep Level Member
  • ******
  • 8169
    • View Profile
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 ... https://www.youtube.com/watch?v=SyIj8e6oojw

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