First Law of the Spectrum
المؤلف:
GEORGE A. HOADLEY
المصدر:
ESSENTIALS OF PHYSICS
الجزء والصفحة:
p-482
2025-12-21
31
First Law of the Spectrum -Demonstration. -Examine the flame of a candle by the spectroscope, and it will be seen to be continuous from the red end to the violet, passing through all the intermediate colors by imperceptible gradations.
LAW I. When the source of light is an incandescent solid, liquid, or dense gas, the spectrum is continuous.
The continuous spectrum in the above demonstration is the spectrum of incandescent solid particles of carbon from the candle. The same kind of spectrum is obtained from a lamp or gaslight.
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