The protagonist in Numb3rs (Charlie Epps played by David Krumholtz) uses certain pens (or markers) with which he writes on glass. These types of markers are also used in the movie "A Beautiful Mind" (John Nash uses them to write on glass).
1.) What kind of markers are these? What are they called?
2.) Can they be erased without any residual marks once you use them to write on glass?
3.) If they can be erased, do you have to use some special kind of solvent to do this or is a moistened (with water) cloth enough?
4.) What other materials can you write on using them (and also erase them later)?
Just wanted to know. They seem really interesting.
Thanks in advance.
1.) What kind of markers are these? What are they called?
2.) Can they be erased without any residual marks once you use them to write on glass?
3.) If they can be erased, do you have to use some special kind of solvent to do this or is a moistened (with water) cloth enough?
4.) What other materials can you write on using them (and also erase them later)?
Just wanted to know. They seem really interesting.
Thanks in advance.
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