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спектр

1. A sequence of colors produced by passing light through a prism or diffraction grating. 2. A range of wavelengths of electromagnetic radiation. 3. A plot that shows how some intensity-related property of a beam of radiation or particles depends on another property that is related to dispersal of the beam by a prism, a magnet, or some other device. For example, a plot of light absorbance vs. wavelength is an absorption spectrum; a plot of ion abundance vs. mass is a mass spectrum.

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аналогтық спектр
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A traditional range of frequencies used for radio and television transmission. This is a less-efficient and lower-quality system that uses Radio Frequency (RF) waves to transmit ...

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Chemistry; General chemistry

Spectra generated by excited substances. Consists of radiation with only specific wavelengths.

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A plot of the relative absorbance or intensity of emitted light vs. wavelength or frequency that shows a smooth variation, rather than a series of sharp peaks or bands.

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A single beam spectrum acquired with no sample in the infrared beam. The purpose of a background spectrum is to measure the contribution of the instrument and environment to the ...

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A compound that consists of only carbon and hydrogen, that contains at least one carbon-carbon double bond. Alkene names end with -ene. Examples are ethylene (CH2=CH2); 1-propene ...

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A colloid formed from tiny liquid droplets suspended in another, immiscible liquid. Milk is an example of an emulsion.

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An elementary particle produced by certain nuclear decay processes. Neutrinos have no charge and extremely small masses compared to other subatomic particles.

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A device that senses temperature changes by using a pair of joined wires made of dissimilar metals that produces a voltage that changes with temperature.

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An insulated vessel for measuring the amount of heat absorbed or released by a chemical or physical change.

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1. An -OH group within a molecule. 2. A free radical formed by abstraction of a hydrogen atom from water.

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