New York: Van Nostrand, 1929. First edition. Original gray cloth, lettered in black. x, 194 pp. Corners slightly bumped, else a fine copy in the scarce dust jacket, split on the folds but with little other wear. Claimed to be the first American book on television.
Sheldon was a scientist who was ahead of his time, especially in space travel notions. In 1929 he wrote about the serious possibility of man visiting other planets through the use of rockets. He wrote the original introduction to The Conquest of Space by David Lasser, the first book written in English that seriously connected rocketry with space travel and the possibility of one day man visiting other planets. He is considered a pioneer in several twentieth-century scientific fields,and was a specialist in several areas of electronics. One is the conduction of electricity through crystals, which is the basic concept of modern-day electronic integrated circuits. Another was the field of ultra high radio frequencies. Item #32094