SPECIAL INKS - INKS THAT CHANGE IN
RESPONSE TO SUN LIGHT AND TEMPERATURE
V. Ryan © 2004
Inks that respond to sunlight are called photochromic
inks. Variations in the level of ultra violet light determine the colour
they display. A possible application of this type of ink is a sunbathing
monitor. |
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Ed the Handyman ignores sunbathing advice form the EEC (European Economic Community) and burns badly in the sun. |
QUESTION: 1. Describe a practical application of photochromic inks, other than the one shown above. |
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