Physical Properties of Materials, Second Edition
Purchase Options Request Exam Copy

<Previous Page

Movie 3: Thermochromic Ink

File Size:
Unknown
 
Movie Script:

The FriXion(tm) pen Pilot uses heat to remove the color of the ink. The pen can be used to write normally. When you want to erase it, rub the ink with the plastic end of the pen, causing friction and heating which discolors the thermochromic ink. (But if you cool it in liquid nitrogen, the color comes back!)

 

<Previous Page