Polarized Light Microscopy Digital Image Gallery


Though a German graduate student first synthesized it in 1873, DDT was not used as an insecticide until it was rediscovered by Dr. Paul Mueller, a Swiss entomologist searching for a long-term solution to the clothes moth, in 1939. When further research demonstrated that the synthetic chlorinated hydrocarbon was also effective against flies, lice, and mosquitoes, the military realized its potential for protecting troops against insect-borne diseases during World War II. Then, in 1948, after the substance was credited with staving off countless outbreaks of malaria, typhus, and related illnesses, Mueller was awarded the Nobel Prize in medicine.

© 1995-2019 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Thursday, Nov 20, 2003 at 03:51 PM
Access Count Since November 20, 2003: 6928
Microscopes provided by:
Visit the Nikon website. Visit the Olympus Microscopy Resource Center website.