Word: spectra
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...photographing the sun during eclipse was among the apparatus used by the expedition, which has been called by Dr. Miller the "best equipped single expedition that has ever gone out to observe an eclipse of the sun." Other apparatus included a two flash spectroscope with which to obtain spectra of the corona,--the gaseous haze surrounding the dark disc during totality; an Einstein camera, the gift of Professor C. L. Poor of Columbia, and especially adapted to proving the Einstein gravitational theory, and a new type of interferometer called the "etalon", designed to detect motion in the Corona. In addition...
Working in the "pit," a windowless sub-cellar of the Jefferson Physical Laboratory. Dr. Robert S. Mulliken, National Research Fellow has for the past five months been carrying out elaborate researches in band spectra, almost unknown to the University at large...
When interviewed in his subterranean laboratory yesterday. Mr. Mulliken said that he had been started upon his research by an article published in 1915 by Dr. W. Jevons, a noted English scientist. In this article Jevons had described his observations of the band spectra of boron nitride; he had measured the heads of two systems of spectrum bands of boron nitride and located two subsidiary systems of bands and also extra bands apparently filling no system...
...Annie Jump Cannon, curator of the Harvard College Observatory, was born in Delaware 59 years ago, and educated at Wellesley. She has been at Harvard continuously since 1896 and ranks among the most distinguished American astronomers. Her main subjects of research are photographic spectra of stars and variable stars. She has discovered more one hundred and fifty new and variable stars, compiled a bibliography of 45,000 references, and completed a catalogue of 220,000 stellar spectra which will fill nine volumes of the Harvard Observatory Annals...
...Cannon during her astronomical work has completed a bibliography of variable stars comprising 50,000 references, has discovered 200 variable stars, and has completed a catalogue of 220,000 stellar spectra. She is also the author of various College Observatory annals and of short papers and notes on stellar spectra...