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Dates: during 1950-1959
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...thought it would be fun to make the calculation. And then I thought your readers would like to see how it comes out. Here it is: Take the circumference of the earth in inches. This comes from 3,963.4 x 6.2832 x 5280 x 12 [i.e., radius of earth multiplied by 2π, converted to inches]. Express this as 1.571 x 10^9. Let v equal the electron velocity and c the velocity of light. Then...
...X Ray. The X ray, when compared with numerous previous films of the heart and lungs dating from 1946, showed no changes in the lungs and no changes in the general configuration or size of the heart. The fluoroscopic examination of the heart showed a normal rate and rhythm. The healed infarction on the anterolateral wall of the left ventricle was again noted and appeared as an area approximately 2.5 centimeters (nearly one inch) in extent in which the amplitude of the pulsations was diminished. There was no evidence of bulging in the scar. Action of the diaphragm and aortic...
Secret VTOL. Nothing has been released about Ryan's X-13 "Vertijet" which is still a highly classified project. But the technical public got a quick look at it when it was shipped to Edwards, carefully wrapped (see cut). Airplane-industry gossip has been swapping bits of information about it ever since...
...X-13 is a small delta wing with a fuselage about 30 ft. long. It now has conventional landing gear for test purposes, but is designed as a "tail sitter" (sitting on its tail on take-off). When rising or hovering in the vertical position, it probably depends for control on outboard thrust outlets taking power from the engine or supplied with gas by small rockets. Some of the gossips believe that the X-13 will never try to land on its tail -a stunt that is still not easy for the less critical, propeller-driven Pogo. Instead, they think...
...beginning of this month, the X-13 had not taken off or landed vertically. It has taken off many times, however, in the old-fashioned way, and Test Pilot Pete Girard is feeling out, at safe altitudes, its ability to hover nose up and to rise and descend vertically...