Word: hydrogenating
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Dates: during 1930-1939
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Professor Piccard blinked bewilderedly behind his spectacles at all the excitement. True, they had remained aloft longer than intended, but that was only because the gas valve had failed to work, and they were forced to wait until the cool of evening contracted the hydrogen in the balloon's bag which was only one-seventh full upon starting. Yes, it was fortunate that their oxygen held out so long. No, they suffered no hardship except heat and thirst. Half the shell of the gondola had been painted black to absorb the rays of the sun in the frigid stratosphere. Result...
...knowledge acquired in the last twenty years indicates that the source of stellar radiation must be matter itself. He talked fully half of the time upon the much discussed cosmic radiation and showed how calculations of its energy corresponded with the energy that must result from the annihilation of hydrogen and helium atoms...
...Millikan believes that the Universe is constantly regenerating itself. His chief evidence is the cosmic ray, most penetrating known. The energy which this ray carries, he figures, is just the amount which would be released when four atoms of hydrogen, the primeval element, combined to form one helium atom...
...Compounds. Temperature of the sun (12,000° F. on the surface, perhaps millions within) is so great that it was believed that elements could not exist there in molecules or compounds, only as free atoms. Henry Norris Russell (Princeton) reported spectographic discovery of seven solar compounds of hydrogen, four of oxygen, and three of other elements. Sun compounds are not stable as earth's. On earth an oxygen atom holds two hydrogen atoms and makes a molecule. On the sun the oxygen holds only one hydrogen atom, and they are ever ready to sunder...
...Hydrogen gas is colorless, odorless, tasteless...