Find number abc
If 473c4 + a49a4 = bb23b8 find number abc. Multiple solutions may exist.Correct answers: 11
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Jean-Felix PiccardDied 28 Jan 1963 at age 79 (born 28 Jan 1884).Swiss-American chemical engineer and balloonist who conducted stratospheric flights for the purpose of cosmic-ray research. His first balloon ascent (1913) was with his twin brother, Auguste Piccard. With his wife, on 23 Oct 1934, he made the first successful stratosphere flight through clouds, ascending to a height of 11 miles (18 km). In 1936, Piccard flew the first successful plastic film balloon, which he invented and developed, the precursor of the plastic film balloon for high altitude experiments still used for scientific purposes. In 1937, he made an ascent of 11,000 feet (3,350 m) to test a metal gondola attached to a cluster of 98 balloons. He also developed a frost-resistant window for balloon gondolas and an electronic system for emptying ballast bags. |