Lambert
Lambert (medicine)
Lambert (pronounced: lam-bert) is a term used in the field of medicine to refer to a unit of measure for luminance. It is named after the renowned physicist, Johann Heinrich Lambert.
Etymology
The term 'Lambert' is derived from the name of the Swiss mathematician and physicist Johann Heinrich Lambert, who made significant contributions to the fields of mathematics, physics, and astronomy. He is particularly known for his work in the field of photometry, the science of measurement of visible light in terms of its perceived brightness to the human eye.
Definition
In medicine, the Lambert is used as a unit of measure for luminance. It is defined as one lumen per square centimetre, where a lumen is a unit of luminous flux, a measure of the total quantity of visible light emitted by a source per unit of time.
Related Terms
- Lumen (unit): A unit of luminous flux in the International System of Units, that is equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions.
- Photometry (optics): The science of the measurement of light, in terms of its perceived brightness to the human eye.
- Candela: The SI unit of luminous intensity, one of the seven SI base units.
See Also
External links
- Medical encyclopedia article on Lambert
- Wikipedia's article - Lambert
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