题目内容

( ) was recommended to name “Amplification of Stimulated Radiation” as"激光".

A. Qian Zhongshu
B. Qian Xuesen
C. Zhou Enlai
D. Mao Zedong

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In 1917, ( )reinterpreted the theory of "the interaction between light and matter".

A. Darwin
B. Newton
C. Mayman
D. Einstein

After the atoms absorb energy, they can achieve a transition from a low energy level to a high energy level.

Atoms fall back from a high energy level to a low energy. When they fall back, they release energy. This energy is emitted in the form of ( ), and light is produced.

A. Photons
B. Electric charge
C. Sound wave
D. Electronics

The first laser was developed by Mayman of the United States in ( ).

A. 1950
B. 1955
C. 1960
D. 1963

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