Word: spectral
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...series of addresses on money and depression. "Mr. Speaker and fellow members of Congress," hopefully began gaunt, gold-toothed Representative Gray, who had informed his colleagues by letter and in the Congressional Record of his intention to take the air to harangue them at greater length than even his spectral appearance has ever induced them to listen to him from the floor...
...about 13 mi. per second. When a source of light is approaching the observer, the spectrum lines are shifted to the right of their normal position. Thus Martian vapor lines would have been separated from those of Earth. The astronomers armed the 100-in. telescope with a 9-ft. spectral grating, but no Martian vapor lines showed up. They concluded that the planet's atmosphere is very nearly bone...
...ghost of a Florentine monk who died in 1317 had appeared in Chicago last week, it could have pointed a spectral finger at 59 men and one woman, members of the American Academy of Optometrists, and intoned: "Your means of livelihood you owe mostly to me." In a Vienna museum stands a statue of this medieval monk, with a pair of glasses in one hand and bearing this inscription: Here lies Salvina D'Armato degli Armati of Florence, the inventor of spectacles. May God forgive his sins...
...astronomers say that the galaxies, unimaginably huge, stupendously scattered collections of stars, are running away from Earth and from each other at a rate of many thousands of miles per second. They back up their assertion by catching light from a galaxy in a spectrograph, measuring how far its spectral lines have shifted, in a given period, toward the red or violet end of the spectrum. If the lines redden, that implies the galaxy is receding from the observer, stretching out its light-waves, just as a train whistle lengthens its sound-waves, becomes flatter as it moves into...
...Forum last week reprinted 18 articles, poems, stories evoking from the past the ghosts of some of its celebrated contributors. Though Forum's editors did not intend "merely to dazzle our readers with an array of great names," such was the primary effect with the names of these spectral scriveners...