Suppose you are observing a light bulb. In this context, which of the following is a difference between intrinsic brightness and apparent brightness?
A) The wattage of the light bulb tells you its intrinsic brightness, whereas the apparent brightness of the light bulb depends on its distance from you.
B) The size of the light bulb tells you its intrinsic brightness, whereas the apparent brightness of the light bulb depends on its wattage.
C) The distance from the source of the light bulb tells you its intrinsic brightness, whereas the apparent brightness of the light bulb depends on its size.
D) The visual wavelength of the light bulb tells you its intrinsic brightness, whereas the apparent brightness of the light bulb depends on its distance from a neighboring light bulb.
Question 2
Red dwarfs:
A) lie in the upper left of the Hertzsprung-Russell diagram.
B) are the biggest stars in the main sequence.
C) are cool and small with low luminosities.
D) appear 1000 times larger than the Sun.
Poison bulb
Supernova Light Curves
Color in Context
A monochromatic beam of light of wavelength 600 nm is incident normally on a diffraction ...
In the retina, there are two types of light receptor cells: Rods are sensitive to differences in lig