Chemistry Question #2896

Cesar, a 20 year old male from kalookan asks on September 1, 2005,

What are the components of a fever strip and the chemical principles behind it?

viewed 18708 times

The answer

Barry Shell answered on October 7, 2005

The chemical inside the fever strip, or any other temperature sensitive flat colour-changing strip is a kind of cholesterol crystal compound that is a liquid crystal. The scientist who explained this phenomenon, Pierre-Gilles de Gennes, won the 1991 Nobel Prize for his discovery.

This is explained very well at the following sites:

Paul Doherty's Scientific Explorations and Explanations website.

Nobel Prize website.

Add to or comment on this answer using the form below.

Note: All submissions are moderated prior to posting.

If you found this answer useful, please consider making a small donation to