Spectra of Energy Efficient Lights

Spectra of Energy Efficient Lights

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Caption: The spectra of a selection of energy efficient lights. The lights are photographed through a diffraction grating to show the spectra. The lights on the left are energy efficient LED bulbs of different designs, the fourth bulb is a coiled fluorescent tube, and the bulb on the far right is a standard incandescent lamp using a tungsten filament. Each colour band corresponds to a specific energy of photon released by electrons jumping to different energy levels.

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Keywords: atomic, atomic spectra, bulbs, chemistry, colour, colour of lights, compact bulbs, diffraction, efficient, electron, electrons, elements, energy, energy levels, florescent lights, fluorescent bulbs, gases, grating, green, led, led light, led lights, leds, light bulbs, lighting colour, modern, optical spectra, optics, orbital, photon, photons, physics, spectra, spectral, spectrum

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