The difference between a LED and a laser is that a LED has spontaneous photon emission, and a laser has _________photon emission.
Fill in the blank(s) with the appropriate word(s).
stimulated
You might also like to view...
Approximately how long after the Big Bang did the era of nucleosynthesis end, marking the time when the basic chemical composition of the universe was determined?
A) 10-10 second B) 0.001 second C) 5 minutes D) 380,000 years E) 5 million years
When a mass of 0.350 kg is attached to a vertical spring and lowered slowly, the spring stretches a distance d. The mass is now displaced from its equilibrium position and undergoes 100 oscillations in 48.9 s. What is the stretch distance d?
A) 2.35 cm B) 2.97 cm C) 4.71 cm D) 5.94 cm E) 6.28 cm
Cepheid variable stars are more luminous than the sun
Indicate whether the statement is true or false
The first step in the precipitation-hardening process is the _________treatment to produce a uniform distribution of solute atoms in the grains.
Fill in the blank(s) with the appropriate word(s).