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Hermann von Helmholtz (August 31, 1821 - September 8, 1894) was a German physicist, physiologist, and inventor who served as a military doctor. He published a book called The Preservation of Power.
- Chinese name
- Hermann von Helmholtz
- Foreign name
- Hermann von Helmholtz
- Date of birth
- August 31, 1821
- Date of death
- September 8, 1894
- Representative works
- On the Sensation of Tone
catalogue
The year 1848
The year 1894
He went there in 1849
Konigsberg
v
Kingdom of Prussia
The province of East Prussia, today
Russia
the
Kaliningrad
The office of
physiology
and
pathology
Professor;
In 1855 he took over the chair of anatomy and physiology at Bonn;
In 1858 he moved to the chair of Physiology at Heidelberg;
In 1870 he became a member of the Prussian Scientific Society.
In 1888 he became the first chairman of the newly established Imperial Institute of Physics and Engineering in Charlotteburg.
In 1847, Helmholtz published Erhaltung der Kraft (Conservation of Force), which clarified
Conservation of energy
The principle of,
Helmholtz free energy
It was named after him. He studied it, too
electromagnetism
His research predicted
Maxwell's equations
Hit the mark
Electromagnetic radiation
relevant
equation
Named after him.
In addition to physics, Helmholtz also contributed to the study of perception. He invented
ophthalmoscope
And the one named after him
resonator
Helmholtz-Resonator, his two books on optics and acoustics, A Study of tonal perception as the Physiological Basis of Music Theory (Die Lehre von den Tonempfindungen als physiologische Grundlage fur die Theorie der) Musik, Handbuch der Physiologischen Optik (Manual of Physiological Optics), had a great influence on later generations.
On the Sensation of Tone, by Hermann von Helmholtz, 1863. This paper mainly discusses the feeling of each tone from the point of view of physics, and at the same time has a high
Aesthetic value
.
Be shaped like
the
Partial differential equation
Named after Helmholtz
Helmholtz equation
(Helmholtz partial differential equation), where is
Laplacian operator
. The Helmholtz partial differential equation suitable for the vector potential is:
The equation appears in physics and theoretical electronics, for example, when it is solved by the separation of variables under the condition that time harmony is assumed to be satisfied
Wave equation
.
