„Látható spektrum” változatai közötti eltérés
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19. sor:
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[[Fájl:Newton_Opticks_titlepage.jpg|thumb|left|200px|[[Newton]] optikáról szóló művének címlapja]]
[[Fájl:Prisma-lightSpectrum-goethe.gif|thumb|200px|Fehér [[fény]] [[Diszperzió|felbomlása]] háromszög alakú [[prizma|prizmán]] a látható spektrum színeire]]
[[Fájl:Goethe, Farbenkreis zur Symbolisierung des menschlichen Geistes- und Seelenlebens, 1809.jpg|thumb|200|[[Goethe]] által rajzolt színkör, 1809]]
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== History ==
[[Image:Newton's colour circle.png|thumb|250px|right|Newton's color circle, from ''Opticks'' of 1704, showing the colors correlated with [[musical note]]s. The spectral colors from red to violet are divided by the notes of the musical scale, starting at D. The circle completes a full [[octave]], from D to D. Newton's circle places red, at one end of the spectrum, next to violet, at the other. This reflects the fact that non-spectral [[purple]] colors are observed when red and violet light are mixed.]]
96 ⟶ 100 sor:
==Spectroscopy==
[[Image:Atmospheric electromagnetic opacity HU.svg|thumb|left|300px|Rough plot of [[Earth]]'s [[Earth's atmosphere|atmospheric]] transmittance (or [[Opacity (optics)|opacity]]) to various [[wavelength]]s of [[electromagnetic radiation]], including visible light.]]
[[Spectroscopy]] is the study of objects based on the spectrum of color they emit or absorb. Spectroscopy is an important investigative tool in [[astronomy]] where scientists use it to analyze the properties of distant objects. Typically, [[astronomical spectroscopy]] uses high-dispersion [[diffraction grating]]s to observe spectra at very high spectral resolutions. [[Helium]] was first detected by analyzing the spectrum of the [[Sun]]. [[Chemical element]]s can be detected in astronomical objects by [[emission line]]s and [[absorption line]]s.
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