Word: mi
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...contrasted happily with eight previously bungled attempts. Up, up it sailed until it became a tiny silver bubble, then a pinpoint hanging in the sky. After about two hours the ground station received a radio flash from the Stratostat: it had passed Piccard's world record of 10 mi., was still climbing! Another three hours, and the U. S. S. R. had pulled itself up to 11.8 mi., was ready to come down. The descent went as smoothly as the ascent, the U. S. S. R. landing lightly in a meadow about 60 mi. from Moscow. Fully half...
...microwaves approach heat waves in shortness and light waves in behavior. They can be focused as a beam and sent in any direction. Theoretically they should be perceptible only just beyond the visible horizon of the sending station. Senator Marconi has made them register over a distance of 180 mi., or nine times his sending station's visible horizon, and has been able to communicate with them clearly and powerfully at five times the horizon. They register beyond mountains. Whether they bend over the mountain tops or go right through the mountains, he last week declared...
Another mystery is why the waves fade at times. Yet, said he, "I once had fading on an experiment of 100 mi. with long waves, and none on a 6,000-mi. transmission. You can't tell...
...summer of 1822 Fort Mackinac, Michigan Army and fur-trading post, was a rough, brawling, drunken community of about 5,000 Indians, French-Canadians and half-breeds spending the proceeds of their winter fur catches. Only doctor within a 300-mi. radius was William Beaumont, an Army surgeon who meticulously recorded in a diary every medical tittle and jot he performed. For June 6, 1822, the entry, now a precious incunabulum in the history of U. S. Medicine, reads...
...Mich., Warren Eaton, Norwich, N. Y. After feeling their way up & down the Ridge for a couple of days, the pilots went out for records. Mehlhose, in a Hawk, took off from Rockfish Gap in a wind that nearly tore his wings off, soared up the Shenandoah Valley 71 mi. for a new U. S. distance record. (Old record: 66.7 mi., Martin Schempp, from Elmira.) Dick du Pont set out next day to go Mehlhose one better. Also starting from Rockfish Gap, he passed Mehlhose's landing place, kept on soaring, crossed the Maryland line, started to head into...