Hermann von Helmholtz developed the first practical ophthalmoscope, among his many other scientific achievements. * Image: Hulton-Deutsch Collection / Corbis * 1850: German physician Hermann von ...

Hermann von Helmholtz is a towering figure in the ... In the 1840s and 1850s, he devised the ophthalmoscope — an instrument for examining the inside of the eye — and took innovative ...

THE GREAT German physicist Hermann von Helmholtz not only discovered the first law of thermodynamics (the conservation of energy) but also invented the ophthalmoscope and was first to measure ...

He also invented the ophthalmoscope and published its ... mathematician and philosopher Hermann von Helmholtz. In 1857 Helmholtz presented a famous lecture where he described how the ear converts ...

Best known for his study of electricity, Helmholtz also was a pioneer in the study of color. He extended the theory of Young that color could be represented by combinations of only three colors, as ...

1850: German physician Hermann von Helmholtz, who devoted much of his career to studying the eye and the physics of vision and perception, demonstrates his ophthalmoscope to the Berlin Physical ...