Articles Index

Introduction to Joseph Henry
Joseph Henry was an important American scientist and the first Director of the Smithsonian Institution.

History of the Submarine
In 1896 the US Navy insisted that submarine designer John Holland build his first contract submarine.

African American Inventors at NASA
Joycelyn Harrison is a NASA engineer at the Langley Research Center researching piezoelectric polymer film and developing customized variations of piezoelectric materials

Famous Inventors : A to Z
Biographies of the most famous inventors in history - timelines patents inventions and other information.

History of Hershey's Chocolate & Milton Hershey
In 1894 Milton Hershey started the Hershey Chocolate Company.

Elias Howe
Elias Howe patented the first American made sewing machine.

Walter Hunt
The safety pin was the invention of Walter Hunt, who also invented an early rewing machine.

Dorothy Crowfoot Hodgkin
Dorothy Crowfoot Hodgkin was the 1964 Nobel Prize winner in Chemistry.

Robert Hall 1919 -
Robert Hall invented the semiconductor injection laser - a device now used in all compact disk players and laser printers.

David Hughes - Carbon Microphone
David Edward Hughes invented the carbon microphone which was essential to the development of the telephone.

Grace Murray Hopper
Biography and achievements of Grace Murray Hopper

Famous Quotes from Grace Hopper
Famous quotes from Grace Hopper - computer programmer

William Hewlett 1913 - 2001
William Hewlett inventor of an improved audio oscillator started the electronics company Hewlett Packard.