Concept explainers
(a)
Interpretation:
The number of photons generated each second from a
Concept introduction:
The term Laser is the abbreviation for “Light Amplification by Stimulated Emission of Radiation”. The laser gives light after the amplification process. The energy of light after the amplification process is so high that this device can be used to cut a thick metal sheet.
(b)
Interpretation:
The conversion of
Concept introduction:
The term Laser is the abbreviation for “Light Amplification by Stimulated Emission of Radiation”. The laser gives light after the amplification process. The energy of light after the amplification process is so high that this device can be used to cut a thick metal sheet.
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Physical Chemistry
- A particular transition of the rubidium atom emits light whose frequency is 3.84 1014 Hz. (Hz is the abbreviation for hertz, which is equivalent to the unit/s, or s1.) Is this light in the visible spectrum? If so, what is the color of the light? (See Figure 7.5.)arrow_forwardWhen the Sojourner spacecraft landed on Mars in 1997, the planet was approximately 7.8 107 km from Earth. How long did it take for the television picture signal to reach Earth from Mars?arrow_forwardA ruby laser puts out a pulse of red light at a wavelength of 694 nm. (The ruby laser is described in the essay on p 226.) If a pulse delivers 1.05 105 watts of power for 280 s, how many photons are there in this pulse? (1 watt = 1 J/s.)arrow_forward
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- 6.9 If a string of decorative lights includes bulbs with wave-lengths of 480, 580, and 700 mm, what are the frequencies of the lights? Use Figure 6.6 to determine which colors are in the set.arrow_forwardAn FM radio station found at 103.1 on the FM dial broadcasts at a frequency of 1.031188s1 (103.1 MHz). What is the wavelength of these radio waves in meters?arrow_forward
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