Craig Beals explains how some ink can disappear when heated and reappear when cooled. Thermochromic ink pens are filled with leuco dyes which change shape as they are heated or cooled. When these thermochromic dyes heat up and reach a certain temperature they no longer reflect light and they become "invisible". Cooling them down causes them to change shape again and reflect light of certain colors.

The pens used in these experiments are sold under the brand "FriXion" and can be found here: [ Ссылка ]

Instructions and information can be found at [ Ссылка ]

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SUBSCRIBE and Ring the Bell: [ Ссылка ]

WARNING:
This video is only for entertainment purposes. If you rely on the information outlined in this video, you assume responsibility for the results. As with any experiment, proceed at your own risk.

Music:
-"Night Owl" by Broke for Free cc Attribution License; [ Ссылка ]

-Feels Good 2 B by Audionautix is licensed under a Creative Commons Attribution license ([ Ссылка ])
Artist: [ Ссылка ]

-"Get Outside" by Jason Farnham; YouTube Audio Library


Dance of the Sugar Plum Fairies by Kevin MacLeod is licensed under a Creative Commons Attribution license ([ Ссылка ])
Source: [ Ссылка ]
Artist: [ Ссылка ]

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