Nanometre

Nanometer (e e dirisitsweng ke International Bureau of Weights and Measures; letshwao la SI: nm), kgotsa nanometer (e e dirisitsweng ke American), ke yuniti ya boleele mo International System of Units (SI), e e lekanang le billionth (sekgala se sekhutshwane) ya metara (0.000000001 m) le picometre e le 1000. Nanometara e le nngwe e ka tlhalosiwa ka tsela ya saense e le 1 × 10-9 m le 1 / 1000000000 m.

 Histori 
Nanometer e kile ya bo e bidiwa "millimicrometer" - kgotsa, gantsi e bidiwa "millimicron" ka bokhutshwane - ka gonne e lekana le 1 / 1000 ya micrometer. Gantsi e ne e supiwa ka letshwao mμ kgotsa, ka sewelo, jaaka μμ (le fa go ntse jalo, μμ e tshwanetse go kaya milione ya micron).Svedberg, The; Nichols, J. Burton (1923). "Determination of the size and distribution of size of particle by centrifugal methods". Journal of the American Chemical Society. 45 (12): 2910–2917. doi:10.1021/ja01665a016.Svedberg, The; Rinde, Herman (1924). "The ulta-centrifuge, a new instrument for the determination of size and distribution of size of particle in amicroscopic colloids". Journal of the American Chemical Society. 46 (12): 2677–2693. doi:10.1021/ja01677a011.Terzaghi, Karl (1925). Erdbaumechanik auf bodenphysikalischer Grundlage. Vienna: Franz Deuticke. p. 32.

 Tlhaloso 
Leina leno le kopantse leina la SI la nano- (le le tswang mo Segerikeng sa bogologolo la νάνος, nanos, "motho yo monnye") le leina la yuniti ya motsadi ya metara (le le tswang mo Segerikeng μέτρον, metrοn, "yuniti ya go lekanya").

 Tiriso 
nNanotechnologies e ikaegile ka dithulaganyo tsa mmele tse di diragalang mo sekaleng sa nanometers (bona nanoscopic scale).Svedberg, The; Nichols, J. Burton (1923). "Determination of the size and distribution of size of particle by centrifugal methods". Journal of the American Chemical Society. 45 (12): 2910–2917. doi:10.1021/ja01665a016.

Nanometer e dirisiwa gantsi go tlhalosa bogolo jwa atomo: ka sekai, bophara jwa atomo ya helium ke 0.06 nm, mme jwa ribosome ke 20 nm. Nanometer e dirisiwa gape go tlhalosa boleele jwa marang a electromagnetic radiation gaufi le karolo e e bonalang ya spectrum: lesedi le le bonalang le farologana go tswa go 400 go ya go 700 nm. Hewakuruppu, Y., et al., Plasmonic " pump – probe " method to study semi-transparent nanofluids, Applied Optics, 52(24):6041-6050 Ångström, e e lekanang le 0.1 nm, e ne e dirisiwa pele mo maitlhomong ano.

Fa e sale kwa bokhutlong jwa dingwaga tsa bo1980, mo ditirisong tse di jaaka 32 nm le 22 nm semiconductor node, e dirisitswe gape go tlhalosa bogolo jwa diteng mo dikokomaneng tse di latelanang tsa ITRS Roadmap ya go dira didiriswa tsa semiconductor tse dinnye mo madirelong a semiconductor.

 Metswedi