light absorbance

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• Absorbance — Optical density redirects here. Optical density can also refer to index of refraction.[1] In spectroscopy, the absorbance A (also called optical density)[2][3] is defined as:[4] , where I is the inte …   Wikipedia

• absorbance unit — (AU)    a logarithmic unit used to measure optical density, the absorbance of light transmitted through a partially absorbing substance. If T is the percentage of light transmitted, then the absorbance is defined to be log10 T absorbance units.… …   Dictionary of units of measurement

• absorbance — noun A logarithmic measure of the amount of light that is absorbed when passing through a substance …   Wiktionary

• absorbance — In spectrophotometry, log of the ratio of the radiant power of the incident radiation to the radiant power of the transmitted radiation. SYN: absorbancy, absorbency, extinction (2), o …   Medical dictionary

• absorbance — É™b sÉ”rbÉ™ns /É™b sɔː bÉ™ns n. percentage of the passage of light through a liquid; degree to which something is absorbed …   English contemporary dictionary

• absorbance — noun Physics a measure of the capacity of a substance to absorb light of a specified wavelength …   English new terms dictionary

• absorbance — UK [əbˈzɔː(r)bəns] / US [əbˈzɔrbəns] noun [uncountable] physics the measurement of how much light an object can absorb …   English dictionary

• absorbance — [1] The logarithm of the ratio of the intensity of light incident on a sample to that transmitted by it. It is usually directly proportional to the concentration of the absorbing substance in a solution. [2] The capacity of materials such as… …   Dictionary of automotive terms

• absorbance — noun (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation • Syn: ↑optical density, ↑transmission density, ↑photographic density • Topics: ↑physics, ↑natural philosophy …   Useful english dictionary

• Ultraviolet-visible spectroscopy — or ultraviolet visible spectrophotometry (UV/ VIS) involves the spectroscopy of photons in the UV visible region. It uses light in the visible and adjacent near ultraviolet (UV) and near infrared (NIR) ranges. In this region of the… …   Wikipedia

• George Wald — Infobox Scientist name = George Wald box width = image size =150px caption = George Wald birth date = November 18, 1906 birth place = New York City death date = April 12, 1997 death place = Cambridge, Massachusetts residence = |citizenship =… …   Wikipedia