Multiple Choice
If the rest wavelength of a certain line is 600 nm, but we observe it at 594 nm, then
A) the source is getting 1% hotter as we watch.
B) the source is approaching us at 0.1% of the speed of light.
C) the source is receding from us at 10% of the speed of light.
D) the source is approaching us at 1% of the speed of light.
E) the source is spinning very rapidly, at 1% of the speed of light.
Correct Answer:
Verified
Correct Answer:
Verified
Q11: The Doppler effect can reveal the rotation
Q18: Which of these is emitted when an
Q23: According to the Zeeman effect, the splitting
Q24: If the magnetic fields are very strong,
Q25: An absorption line spectrum, with dark lines
Q26: The total energy radiated by a blackbody
Q42: The product of the wavelength times the
Q90: Increasing the temperature of a blackbody by
Q102: While gravity is always attractive, electromagnetic forces
Q104: As white light passes through a prism,