Word: hartsough
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...Hartsough Mirror-Scales are said to be 100 times as sensitive as the Eoetvos Balance, an instrument now in common use which determines the gravitational pull of sections of the earth's crust. Oil-bearing crust, being light, exerts slightly less gravity pull; ore-bearing crust, slightly more...
...vibration of traffic in Manhattan, even at dead of night, is sufficient to disturb so delicate an instrument. The test of Einstein's theory will be made "somewhere in Illinois." Thereafter, Prof. Hartsough will enlarge his scales and attempt to weigh molecules and atoms; and will consider commercial offers from people eager to try his instruments (he has made three) in locating oil and minerals...
There lay the significance of an announcement last week by Physicist Ralph C. Hartsough of Columbia that he had perfected a set of mirror-scales capable of weighing, distinctly and faithfully, down to one 280-billionth of an ounce. Gossamer quartz filaments balance the scales, the slightest titillation of which is reflected from their gold-mirrored surfaces by a ray of light. The ray is split by two half-mirrors, being reunited on the scale-mirrors, where any disparity between the wavelengths of the reunited portions is clearly seen as shadow bands. Thus, when the object weighed (1/29...
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