What physical situation is necessary to create an absorption spectrum?
What will be an ideal response?
Blackbody radiation creates a continuous spectrum of photons at different wavelengths. When these photons pass through a cool gas, some are absorbed as they excite atoms in the gas. An observer on the other side then sees a continuum of photons with gaps at certain wavelengths - an absorption spectrum.
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One of the requirements of the Scientific Method is that an experiment must be ________
Fill in the blank(s) with correct word
Why is it impossible to generate radio waves with a frequency of 4 × 10^14 Hz?
James is listening to the same tone coming from two speakers, one 3.49 m away and the other 3.10 m distant. At his position the two tones destructively interfere
(a) What is the largest possible wavelength of the tone? (b) If the air temperature is 30.°C, what is the lowest possible frequency?
In order to lift a bucket of concrete, you must pull up harder on the bucket than the bucket pulls down on you
A) True B) False