Edward Goodrich Acheson
Received a patent for carborundum -the hardest man-made surface and was needed to bring about the industrial age.

Thomas Adams
The history of how Thomas Adams first tried to change chicle into automobile tires, before making it into a chewing gum.

Howard Aiken
Worked on the Mark computer series. An in-depth feature from the "History of Computers".

Ernest F. W. Alexanderson
The engineer whose high-frequency alternator gave America its start in the field of radio communication.

George Edward Alcorn
Alcorn invented a new type of x-ray spectrometer.

Andrew Alford
Invented the localizer antenna system for radio navigation systems.

Randi Altschul
Randice-Lisa Altschul invented the world's first disposable cell phone. The history of cell phones.

Luis Walter Alvarez
Received patents for a radio distance and direction indicator, a landing system for aircrafts, a radar system for locating planes and the hydrogen bubble chamber, used to detect subatomic particles.

Virgie Ammons
Invented a firepace dampening device.

Dr. Betsy Ancker-Johnson
The third women elected to the National Academy of engineering. Ancker-Johnson holds US patent #3287659.

Mary Anderson
Anderson patented the windshield wipers in 1905.

Virginia Apgar
Invented a newborn scoring system called the "Apgar Score" for assessing the health of newborn infants.

Archimedes
The history of Archimedes, a mathematician from ancient Greece. He invented the Archimedes screw (a device for raising water).

Edwin Howard Armstrong
Invented a method of receiving high-frequency oscillations, part of every radio and television today.

Barbara Askins
Developed a totally new way of processing film.

John Atanasoff
Determining who was first in the computing biz is not always as easy as ABC.

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