You are here:

FREE Newsletter

Katherine Blodgett 1898 - 1979
Katherine Blodgett invented nonreflective glass.
Katherine Blodgett
Katherine Blodgett 
More on 
Katherine Blodgett 
Katherine Blodgett
Katherine Blodgett - Biography
Katherine Blodgett
Related Innovations
Women Inventors
The History of Glass
~ Mary Bellis

Katherine Blodgett (1898-1979) was a woman of many firsts. She was the first female scientist hired by General Electric’s Research Laboratory in Schenectady, New York (1917) as well as the first woman to earn a Ph.D. in Physics from Cambridge University (1926). She was the first woman to receive the Photographic Society of America Award and the American Chemical Society honored her with the Francis P. Garvin Medal.

Katherine Blodgett’s research on monomolecular coatings with Nobel Prize winning Dr. Irving Langmuir led her to a revolutionary discovery. She discovered a way to apply the coatings layer by layer to glass and metal. The thin films, which naturally reduced glare on reflective surfaces, when layered to a certain thickness, would completely cancel out the reflection from the surface underneath. This resulted in the world’s first 100% transparent or invisible glass. Katherine Blodgett’s patented film and process (1938) has been used for many purposes including limiting distortion in eyeglasses, microscopes, telescopes, camera and projector lenses. 

Katherine Blodgett received U.S patent #2,220,660 on March 16, 1938 for the "Film Structure and Method of Preparation" or invisible, nonreflective glass.  Katherine Blodgett also inventec a special color gauge for measuring the thickness of these films of glass, since 35,000 layers of film only added up to the thickness of a sheet of paper.

Continue with >>> The History of Glass

Photo Provided by Library of Congress

Subscribe to the Newsletter

From Mary Bellis,
Your Guide to Inventors.
FREE Newsletter. Sign Up Now!

Important disclaimer information about this About site.

Newsletters & RSSEmail to a friendAdd to
All Topics | Email Article | |
Our Story | Be a Guide | Advertising Info | News & Events | Work at About | Site Map | Reprints | Help
User Agreement | Ethics Policy | Patent Info. | Privacy Policy | Kids' Privacy Policy

©2006 About, Inc., A part of The New York Times Company. All rights reserved.
Mental Health

Depression Self-Test Vitamins for Depression? Bipolar Red Flags Coping With Disasters Celebrities With Bipolar

What's Hot

Gyroscopes - Elmer Sperry and Charles Stark Draper Gyroscope...Angel AlcalaThe History of the BikiniRusi Taleyarkhan Jack Johnson