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____ is the inventor of the first laser in the world?
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When was the first laser invented in my China?____
The commonly use Nd:YAG has a wavelength of ____ nm.
The lifetime of the upper laser level in the Nd:YAG laser is 230μs, and the probability of spontaneous emission is ____?
Wade Inc. granted a nonqualified stock option for 100 shares at 50 per share to Mary, an employee, on May 1, Year 12. On that date, the option was selling on an established market for 4 per share. Mary exercised the option on August 2, Year 13, when the FMV was 80 per share. She sold the stock on September 2, Year 14, for 100 per share. How much gross income and what type did Mary recognize in Year 12?
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