Background
Hansell was born in Medaryville, Indiana on January 20, 1898.
Hansell was born in Medaryville, Indiana on January 20, 1898.
He graduated from Purdue University with a Bachelor of Science degree in electrical engineering in 1919.
He was granted over 300 United States patents, including, in the 1930s, a precursor to the modern ink jet printer that could print 750 words a minute, its data received via radio telegraph. Only Thomas Edison held more patents. He was awarded an honorary Doctorate of Electrical Engineering in 1952.
Hansell founded the Radio Corporation of America Radio Transmission Laboratory at Rocky Point, New York, Long Island in 1925, and headed the lab for over 30 years.
He was also involved in radio and fiber optics research and suggested the invention of polarized sunglasses. He noted that when the equipment generated negative ions, his colleague"s mood was upbeat.
Conversely, positive ions generated a downbeat mood. Hansell researched the therapeutic possibilities of negative ions throughout his life.
Current scientific studies support his findings, and negative ion therapy may be useful in alleviating depression in some people.
He died in 1967. His papers are kept at State University of New York, Stony Brook.