Find number abc
If b1071 - 2ac3b = ca432 find number abc. Multiple solutions may exist.Correct answers: 67
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LaserIn 1960, the first laser was patented (U.S. No. 2,929,922) by Arthur Schawlow and Charles Hard Townes under the title “Masers and Maser Communications System.” What distinguished this invention as the first laser is that it was the first to operate in the visible light spectrum. The patent was assigned to the Bell Telephone Laboratories, where they had done the research. |