h. l. f. von helmholtz

Helmholtz

[helm-hohlts]
noun
Hermann Ludwig Ferdinand von [her-mahn loot-vik fer-di-nahnt fuhn] , 1821–94, German physiologist and physicist.
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World English Dictionary
Helmholtz (German ˈhɛlmhɔlts)
 
n
Baron Hermann Ludwig Ferdinand von (ˈhɛrman ˈluːtvɪç ˈfɛrdinant fɔn). 1821--94, German physiologist, physicist, and mathematician: helped to found the theory of the conservation of energy; invented the ophthalmoscope (1850); and investigated the mechanics of sight and sound

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American Heritage
Science Dictionary
Helmholtz   (hělm'hōlts')  Pronunciation Key 
German physicist and physiologist who was a founder of the law of conservation of energy. Helmholtz did pioneering research on vision and invented an instrument for examining the interior of the eye in 1851.
The American Heritage® Science Dictionary
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