CHARLES H. TOWNES - FIRST DAY COVER SIGNED - HFSID 317267
Sale Price $144.00
CHARLES H. TOWNES
The Nobel Prize-winning physicist signs an FDC celebrating Science and Industry.
First Day Cover signed: "Chas. H. Townes", 6½x3¾. FDC celebrating Science & Industry, postmarked Chicago, Illinois, January 19, 1983, 20-cent stamp affixed, FIRST DAY OF ISSUE. American physicist Charles Hard Townes (1915-2015), shared the 1964 Nobel Prize for Physics with Soviet scientists Aleksandr M. Prokhorov and Nikolay G. Basov "for fundamental work in the field of quantum electronics, which has led to the construction of oscillators and amplifiers based on the maser-laser principle". Townes created the first maser - a predecessor to the laser that amplified microwaves - with two students in 1953. He and A. L. Schawlow also showed that it was possible to construct a laser in 1958, two years before the first ruby laser was built by Theodore Maiman. Corners lightly worn. Slightly soiled. Pencil notes (unknown hand) on verso. Otherwise, fine condition.
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