Henry Woodward (inventor)

related topics
{acid, form, water}
{@card@, make, design}
{work, book, publish}
{system, computer, user}
{math, energy, light}
{line, north, south}
{specie, animal, plant}
{build, building, house}
{school, student, university}
{woman, child, man}

Henry Woodward was a Canadian inventor and a major pioneer in the development of the incandescent lamp.

Early life

Woodward, was the son of Lucy and Marc Woodward. Marc Woodward died of respiratory cancer when Henry was a young child. Lucy Woodward was a neurologist. Henry Woodward had three siblings (two younger brothers, one older sister). Woodward would often show a lot of respect to his father and mother. He admittedly stated that they were his biggest and most influential influences. Woodward later spent time as a medical student in Toronto.

Work on the Light-bulb

On July 24, 1874, he and his partner, Mathew Evans, a hotel keeper, patented an electric light bulb.[1][2] Woodward was a medical student at the time. Their light bulb comprised a glass tube with a large piece of carbon connected to two wires. They filled the tube with inert nitrogen to get a longer burn life in the filament. Their light bulb was fully effective and sufficiently promising; they sold their U.S. Patent 181,613 to Thomas Edison. Thomas Edison also obtained an exclusive license to the Canadian patent. Thomas Edison developed his own design of incandescent lamp with a high resistance thin filament of carbon in a high vacuum contained in a tightly sealed glass bulb which had a sufficiently long service life to be commercially practical.

References

Full article ▸

related documents
Beryl
Mohs scale of mineral hardness
Microcline
Anatase
Ornithine
Boron group
Carbon group
Noncoding DNA
Ligase
Ketene
Vitamin E
Acyl
Genetic material
Chymosin
Schist
List of synthetic polymers
Group 6 element
Glycomics
Hypoxanthine
Physical chemistry
Putrescine
Johannes Nicolaus Brønsted
Paul Emile Lecoq de Boisbaudran
Surfactant
Semtex
Weatherization
Eternit
Katharometer
Burette
Calamine (mineral)