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Dates: during 1950-1959
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Throttled Rocket. Most rocket motors are all-or-nothing performers. They give good performance at one thrust level only. The Bell X-1 (first airplane to pass the speed of sound) was pushed by a cluster of four small rockets, and it gained a measure of control because the pilot could shut some of them off. The Bell X-2 (already under secret test) has a two-rocket Curtiss-Wright power plant, can vary its thrust, by methods undisclosed, over a considerable range...
Free Rovers. Physicist Bacher described one way of doing it. At Caltech, he reported, there is now a course known only as Physics X, conducted by Dr. Richard Feynman for students with top-grade averages. It carries no academic credit and is totally unplanned. Theoretical Physicist Feynman has established only two course rules: "Questions can't be prompted by some other Caltech course, and they have to be prompted by some natural phenomenon." In 18 months Feynman's gifted students, mostly sophomores and juniors, have pushed far beyond the standard range into subjects, e.g., quantum mechanics and relativity...
...recognized "causes" of cancer, e.g., chemicals, X rays, viruses, are of secondary importance because they are merely responsible for the original injury to cells by depriving them of oxygen. This deprivation is the one basic cause of the disease...
...years all participants in the test were checked with examinations and X rays. There were no deaths from TB, but 165 cases cropped up. Of these. 64 were in the negative-unvaccinated group, for an annual rate of 1.94 cases per 1,000; 13 were in the BCG group, a rate of .37 per 1,000, and seven were in the vole bacillus group, for a rate of .44. Of particular importance: not one of the TB cases in the vaccinated groups was of the especially dangerous meningeal (brain covering) or miliary (throughout the body) variety. There were 81 cases...
...trick is to remember that while the value of a number in Arabic numerals depends on its position (e.g., 2 in 126 is worth 20), an X, V, L or C is still ten, five, 50 or 100 no matter where it appears. Thus, in finding the answer to "What is XXVIII multiplied by XII?", a Roman might have multiplied from left to right the top number by each numeral in the bottom number. Taking X (10) times XXVIII, he would get 20X5, ten Vs and 30 Is, which would become CCLXXX. After adding XXVIII and XXVIII to this...