Helmholtz

Helmholtz

German scientist who helped formulate the law of conservation of energy.He studied the senses of hearing and vision.

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Part of Speech: proper noun
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Industry/Domain: Science
Category: Basic science
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Related terms

Helmholtz coil

Engineering; Electronic engineering

A device consisting of two crossedfield primary windings in which an inductively coupled secondary winding rotates. The primary windings carry currents that differ in phase by 90 ...

Helmholtz resonator

Engineering; Electronic engineering

An acoustic (sound) chamber whose geometry, in combination with the size of a small opening, results in resonance at a specific frequency.

Helmholtz wave

Weather; Meteorology

An unstable wave in a system of two homogeneous fluids with a velocity discontinuity at the interface. See Helmholtz instability.

Helmholtz resonator

Science; General science

An acoustic device consisting of a rigid cavity with one or more small openings. When exposed to sound or vibration, a Helmholtz resonator responds most strongly near a ...

Helmholtz coil

Mining; General mining; Mineral mining

A pair of similar coaxial coils with their distance apart equal to their radius, which permits an accurate calculation of the magnetic field between the coils. Used in calibration ...

fahrenheit

Science; Basic science

This is Fahrenheit scale of temperature, in which the freezing point of water is set at 32 degrees and the boiling point of water is set at 212 degrees.

bone marrow

Science; Basic science

The soft,sponge like material that fills the center of the bones of mammals. Most blood cells form in the bone marrow.

boiling point

Science; Basic science

The temperature at which a liquid changes to a gas or vapour.The vapours moving out of the liquid create so much pressure that they form bubbles.

bond

Science; Basic science

An attraction between atoms that holds them together in a molecule or crystal.Bonds are formed when one or more electrons are shared between atoms.

apogee

Science; Basic science

The point in the orbit of an object in space, such as the Moon, where it is farthest from the object it revolves around, such as Earth.

alpha particles

Science; Basic science

A particle of matter that is made of two protons and two neutrons. Alpha particles shoot out of nucleus of some radio-active element when they break down into smaller elements ...