The New Encyclopaedia Britannica, Volume 29Encyclopaedia Britannica, 1974 - Encyclopedias and dictionaries |
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Page 247
... spectrum of lines . The ultraviolet spectrum is usually divided into two regions : near ultraviolet ( nearer the visible spectrum ) , with wavelengths 2000 to 3800 angstrom units ( one angstrom is 10-10 metre , or 0.1 nanometre ) ; and ...
... spectrum of lines . The ultraviolet spectrum is usually divided into two regions : near ultraviolet ( nearer the visible spectrum ) , with wavelengths 2000 to 3800 angstrom units ( one angstrom is 10-10 metre , or 0.1 nanometre ) ; and ...
Page 577
... spectrum , oceanic ; whitecap waterway , inland : see canals and inland wa- terways . waterweed : see Hydrocharitales . waterwheel 19 : 660 , ancestor to the water turbine , device for utilizing the energy of flow- ing water by ...
... spectrum , oceanic ; whitecap waterway , inland : see canals and inland wa- terways . waterweed : see Hydrocharitales . waterwheel 19 : 660 , ancestor to the water turbine , device for utilizing the energy of flow- ing water by ...
Page 584
... spectrum has a wavelength of 5.8 × 10-5 centimetre ; this wavelength corre- sponds to a frequency ( v ) of 5.17 x 1014 Hz ( hertz equals one cycle per second ) obtained from the equation . Because this frequency and others like it are ...
... spectrum has a wavelength of 5.8 × 10-5 centimetre ; this wavelength corre- sponds to a frequency ( v ) of 5.17 x 1014 Hz ( hertz equals one cycle per second ) obtained from the equation . Because this frequency and others like it are ...
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