Word: doppler
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Dates: during 1930-1939
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...should be "stretched" by the strain-i. e. suffer an increase of wavelength, which should displace spectrum lines toward the red (long wavelength) end. Thus, light winging away from a heavy star should show a definite redshift. Obstacle to confirmation was that another and unrelated spectrum shift existed (the Doppler effect), due to the motion of the star away from or toward the observer. Last week the same Dr. Trumpler announced that he had solved the difficulty by measuring the redshift of nine "O" stars (hottest, brightest, heaviest in the sky) moving along in clusters with other stars. The redshift...
Stars look redder than most astrophysical criteria indicate that they actually are. This apparent astral rubrication might be due to 1) the speeding of stars away from Earth (the Doppler effect of lengthening waves) or 2) the scattering of starlight by star dust and star gases which permeate space...
...universe is dependent upon matter. Abbé Lemaître, Belgian mathematician, investigated Einstein's universe, found that it would be unstable, would necessarily either expand to infinity or contract to a point. Immediately astronomers looked at the stars, measured the amount of spectral shift in starlight (the Doppler effect). They found most starlight shifted towards the red end of the spectrum, interpreted it to mean movement away from the earth (TIME, Oct. 6), concluded that material bodies were spreading, expanding universal boundaries. Dr. Fritz Zwicky of California Institute of Technology and Dr. P. ten Brieggencate, Dutch astronomer, however...
...Shift. When almost a century ago, Christian Johann Doppler, Austrian physicist, declared that sound and light would be changed in wave lengths if they proceeded from a moving source or to a moving observer,* astronomers looked through their telescopes at the far away stars and found that he was correct. They discovered that light from some stars appeared redder than normal, others appeared bluer, concluded that the red stars (the longer wave lengths) were moving away from the earth, the blue stars (shorter wave lengths) were moving toward the earth.? Last week. Dr. Edwin Powell Hubble, Mount Wilson Observatory...