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→‎Brekingsindeks: nuwe afdeling
(→‎Bruinkool (ligniet): nuwe afdeling)
(→‎Brekingsindeks: nuwe afdeling)
 
Jaap, ek vertrou dit gaan goed! Kan jy nie dalk help met bogenoemde nie? Ek dink jy is die beste toegerus daarvoor! Groete! [[Gebruiker:Oesjaar|Oesjaar]] ([[Gebruikerbespreking:Oesjaar|kontak]]) 08:56, 29 Oktober 2018 (UTC)
 
== Brekingsindeks ==
 
Prof, uit die Engelse artikel kom die volgende:
 
''The refractive index can be seen as the factor by which the speed and the wavelength of the radiation are reduced with respect to their vacuum values: the speed of light in a medium is v = c/n, and similarly the wavelength in that medium is λ = λ0/n, where λ0 is the wavelength of that light in vacuum. This implies that vacuum has a refractive index of 1, and that the frequency (f = v/λ) of the wave is not affected by the refractive index. As a result, the energy (E = h f) of the photon, and therefore the perceived color of the refracted light to a human eye which depends on photon energy, is not affected by the refraction or the refractive index of the medium.''
 
Die logika oor golflengte maak nie lekker sin nie. Hoe voel jy daaroor? Groete! [[Gebruiker:Oesjaar|Oesjaar]] ([[Gebruikerbespreking:Oesjaar|kontak]]) 20:15, 6 November 2018 (UTC)

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