What does chromatic aberration separate within refracting telescopes?
a. color
b. lenses
c. images
d. photons
e. focal points
a
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Suppose you have three identical lightbulbs, some wire, and a battery. You connect one lightbulb to the battery and take note of its brightness. You add a second lightbulb, connecting it in series with the previous lightbulbs, and again take note of the brightness. Repeat the process with the third lightbulb, connecting it in series with the other two. As the lightbulbs are added, the brightness
of the lightbulbs (neglect the battery’s internal resistance) 1.increases. 2.decreases. 3.remains the same. 4.Need more information.
Solar tides are not as strong as lunar tides mostly because the Sun is much farther away than the Moon.
Answer the following statement true (T) or false (F)
The waveform of interfering waves is described by the principle of ______________
Fill in the blank(s) with correct word
When does a protostar become a main-sequence star?
A) when the rate of hydrogen fusion becomes high enough to balance the rate at which the star radiates energy into space B) when a piece of a molecular cloud first begins to contract into a star C) when it becomes luminous enough to emit thermal radiation D) at the instant that the first hydrogen fusion reactions occur in the protostar's core