Word: millionths
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...Professor Trowbridge has settled by means of the new battery. Instead of the 20,000 volts which were before considered necessary, he has found that 100,000 are needed to produce the flash, and that with increasing voltage the picture becomes steadily plainer. This current, acting through one ten-millionth of a second, develops one million horse power...
...with the phenomena outside the tubes. A bulb that gives a blue fluorescence will produce as good cathode photographs as one that produces a yellow or green fluorescence. It is practically useless to endeavor to obtain photographs with tubes which are not exhausted to a high degree, perhaps one millionth of an atmosphere. When the anode throws a strong shadow of the cathode on the fluorescent walls of the tube one is sure of obtaining photographs and not before. It is a waste of time and dry plates to attempt to take them be means of Edison lamps...