Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun metrology Symbol for the nanogray, an SI unit of absorbed dose equal to 10−9 grays.

Etymologies

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Examples

  • The higher energy equipment puts much less energy near the surface-about 50nGy-but, by 10cm in, they're depositing more energy than the lower-powered versions.

    Ars Technica

  • The results are given in nanoGrays (nGy), a measure of the amount of energy deposited in the material being exposed-in this case, the human body (typically, health problems aren't obvious until the exposure gets into the single-digits of Grays).

    Ars Technica

  • The higher energy equipment puts much less energy near the surface-about 50nGy-but, by 10cm in, they're depositing more energy than the lower-powered versions.

    Ars Technica

  • The results are given in nanoGrays (nGy), a measure of the amount of energy deposited in the material being exposed-in this case, the human body (typically, health problems aren't obvious until the exposure gets into the single-digits of Grays).

    Ars Technica

  • The gray is a large unit and for normal radiation protection levels a series of prefixes are used: nanogray (nGy) is one thousand millionth of a gray (1/1,000,000,000) microgray (µGy) is one millionth of a gray (1/1,000,000) milligray (mGy) is one thousandth of a gray (1/1,000)

    Radiation units

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