The nanoradian equals about 0.208 533 milliarcsecond (mas). nanoradian (nrad) a unit of angle measure equal to 10 -9 radian. Solar radiation and the tiny forces exerted within living cells. nanonewton (nN) a metric unit of force equal to 10 -9 newton (see below) or 0.1 nanon an informal name for the nanometer. This unit is common in biochemistry, since a mole of a large organic moleculeĬan be quite a large amount. nanomole a unit of amount of substance equal to 10 -9 mole. One nanometer equalsĠ.001 micrometer or 10 angstroms. Introduced inġ951, the nanometer replaced the millimicron. nanometer (nm) a metric unit of distance equal to 10 -9 meter. nanoliter (nl or nL) a metric unit of volume equal to 10 -9 liter or 0.001 cubic millimeter. This unit often occurs in the study of inhalation exposures. nanogray (nGy) a unit of radiation dose equal to 10 -9 gray or 0.1 micro rad nanogram (ng) a metric unit of mass equal to 10 -9 gram, or one millionth ofĪ milligram. This unit was previously called the millimicrofarad (m♟). nanofarad (nF) a common metric unit of electric capacitance equal to 10 -9 farad. Radioactivity of 37 atomic disintegrations per second. nanocurie (nCi) a common unit of radioactivity. Is frequently used in meteorology to express the partial pressure of atmospheric nanobar (nb or nbar) a CGS unit of pressure equal to 10 -9īar or 0.1 milli pascal (mPa). nanoacre a humorous unit of area on a computer chip, equal to one billionth of anĪcre or about 4.047 square millimeters. The prefix comesįrom the Greek word nanos, dwarf. nano- (n-) a metric prefix meaning 10 -9, or one billionth. The nail is equivalent to 1/16 yard,ġ/4 span, 2.25 inches, or exactly 5.715 centimeters. The length of the last two joints (including the fingernail) of the middleįinger. Like the ell, the nail was used for measuring cloth traditionally, it represented nail an old English unit of length equal to 1/20 ell. One that is, an index of refraction n is equivalent to ( n -ġ) x 10 6 N units. Of the index in N units is the number of millionths by which the index exceeds Of refraction of the atmosphere is only slightly greater than 1. Units: N N N a unit of refractive index sometimes used in atmospheric science.
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