|Having electronic voting machines without a paper trail has got to be the stupidest, most shortsighted or corrupt political decision I have ever heard about. - Pat Holmes|
Hermann von Helmholtz
Hermann Ludwig Ferdinand von Helmholtz (August 31, 1821 – September 8, 1894) was a scientist and researcher of great significance and accomplishment. He wrote about everything from acoustics to the origin of the solar system.
Helmholtz's accomplishments range from the Thermodynamic's Law of Conservation of Energy which he discovered while researching the metabolism of muscles to acoustics and the study of electromagnetic waves. He is best known for his wave equation or the "Helmholtz equation" as it is now called. He also developed a device for use in his acoustic research, the Helmholtz Resonantor. In simple terms, it allowed him to determine the volume of sound at a specific pitch.
He wrote a book on acoustics, "On the Sensation of Tone" which is still highly regarded. He also developed the Ophthalmoscope, a device that, in modern form, is still used today during routine eye exams to determine the health of the retina and vitreous humor.
Read more about Helmholtz.
Longitudinal Wavelength Sound Waves Pitch and Frequency Speed of Sound Doppler Effect Sound Intensity and Decibels Sound Wave Interference Beat Frequencies Binaural Beat Frequencies Sound Resonance and Natural Resonant Frequency Natural Resonance Quality (Q) Forced Vibration Frequency Entrainment Vibrational Modes Standing Waves Law of Octaves Psychoacoustics Tacoma Narrows Bridge Schumann Resonance Animal BioAcoustics More on Sound
Law Of Octaves Sound Harmonics Western Musical Chords Musical Scales Musical Intervals Musical Mathematical Terminology Music of the Spheres Fibonacci Sequence Circle of Fifths Pythagorean Comma
DrumsDrum Vibrational Modes
Aristotle Copernicus Einstein Fibonacci Hermann von Helmholtz Kepler Sir Isaac Newton Max Planck Ptolemy Pythagoras Thomas Young
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