Innovators: Katharine Burr Blodgett

Episode Summary

Katherine Burr Blodgett was born in 1898 in Schenectady, New York. Her father worked for General Electric but died before she was born. As a child, Katherine was interested in math and science and attended Bryn Mawr College where she studied physics. During college, she toured the GE research labs and met chemist Irving Langmuir who had known her father. He encouraged her to pursue further education to work in his lab. Katherine completed a master's degree in chemistry at the University of Chicago. In 1918, she became Langmuir's assistant at GE, becoming their first female research scientist. In 1926, she became the first woman to earn a PhD in physics from Cambridge University. Back at GE, Katherine and Langmuir studied surface chemistry. She discovered she could measure the thickness of oily films down to a precision of one millionth of an inch. Using these films, she reduced the glare on glass by applying layers only 4 millionths of an inch thick. This led to the development of non-reflective glass used today. During WWII, Katherine's work enabled effective ice removal from planes and helped develop an important smoke screen. She retired from GE in 1963 after 40 years and 6 patents. Katherine Burr Blodgett was a pioneering scientist and innovator.

Episode Show Notes

Katharine Burr Blodgett (1898-1979)was the first woman scientist ever hired by General Electric and is credited as the inventor of non-reflective glass.

Episode Transcript

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And your authentic self is your professional self. Post your truth, show the world the authentic professional you, and join the conversations redefining professional on LinkedIn. LinkedIn, welcome professionals. Hello, from Wonder Media Network, I'm Jenny Kaplan, and this is Womanica. This month, we're highlighting innovators, women who helped shape the world we live in today. Our Womanica of the Day today shaped how we see the world around us. Let's talk about Katherine Burr Blodgett. Katherine was born in 1898 in Schenectady, New York. Her father, George, was a patent attorney at General Electric. Tragically, George died before Katherine was born. As a child, Katherine showed a keen interest in math and science. She elected to attend Bryn Mawr College, where she studied physics. During her senior year of college, Katherine toured the research labs at GE. Her tour guide, the chemist and inventor, Irving Langmuir, had known Katherine's father. Irving encouraged Katherine to pursue further education if she wished to join his lab. Katherine took the advice and completed a master's in chemistry at the University of Chicago. After graduating in 1918, Katherine became Irving's assistant and eventually GE's first ever female research scientist. At another of Irving's recommendations, Katherine continued to break barriers in education. In 1926, she became the first woman to graduate with a doctorate in physics from Cambridge University. Following her doctorate, Katherine returned to GE to work alongside Irving. At GE, Irving developed a means of producing one-molecule-thick oily films on surfaces. He'd go on to win the Nobel Prize in chemistry in 1932 for his discoveries in surface chemistry. During this time, Katherine's work was also instrumental in another area of research, the refinement of tungsten filament in electric lamps. But soon Katherine and Irving returned to their study of surface films. Katherine discovered that each time a surface such as metal or glass was dipped in the films, it reflected a unique color. She realized that she could therefore measure the thickness of these films with extreme accuracy. Her resulting invention could measure films within one millionth of an inch. These precise measurements came in handy. As Katherine studied the effect of the layers, she realized that she could reduce the glare that reflected off of the glass based on how many layers she applied. When Katherine applied 44 single-molecule layers of the soapy liquid, equivalent to four one millionths of an inch thick, reflections on the glass were all but gone. It was such a marvel at the time that the December 27th, 1938 edition of the New York Times covered the invention, stating in a headline, glass invisible by use of film. It featured a photo of Katherine in her lab and included the following description. Discovery of a coating that makes glass invisible was announced today by Dr. Katherine B. Blodgett. The coated glass does not reflect light from any angle, no matter how strong the glare. Clock dial face and showcase glass and windows appear not to exist. Eyeglasses would not bother wearers with reflections of stray beams from side or behind. At the time of Katherine's discovery, soapy film layers could be easily wiped off from surfaces. Scientists went on to build off of her technology to create a more permanent fusion. Today, non-reflective glass is ubiquitous, from computer screens to camera lenses to eyeglasses. With the start of World War II, Katherine pivoted to help the war effort. Her work led to effective ice removal from planes and the development of a smoke screen that may have saved thousands of lives. Throughout the rest of her career, Katherine won many accolades. She received six patents before she retired from GE in 1963, after more than 40 years with the company. She was a very successful artist, and she was a very successful artist in the company. In 1979, at the age of 81, Katherine passed away in her home in Schenectady. All month, we're talking about innovators. For more information and for pictures of some of the work we're talking about, find us on Facebook and Instagram at Womanica Podcast. Special thanks to Liz Kaplan, my favorite sister and co-creator. As always, we'll be taking a break for the weekend. SPEAKER_06: We'll see you next time. SPEAKER_05: We're here to share the ERA Coalition, Kimberly Peeler Allen and ERA Coalition staffer, Vivian Pong, to talk with us about the work they do. The event is free to attend, and a link to sign up can be found in the show notes or on the Womanica Instagram. So grab your friends, brush up on your history, and join us at the Talaya Taproom on Wednesday, March 9th at 7 p.m. See you there. SPEAKER_00: Do you hear it? The clock is ticking. It's time for the new season of 60 Minutes. 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