A primary rainbow is brighter than a secondary rainbow because
A) sunlight reaching it is more intense.
B) there is one less reflection inside the water drops.
C) larger drops produce primary rainbows.
D) the secondary bow is a dim reflection of the primary rainbow.
E) none of the above
Question 2
Rainbows are not usually seen as complete circles because
A) the ground is usually in the way.
B) they are actually elliptical.
C) they have no bottom part.
D) raindrops are not perfectly round.
E) rainbows are arched shaped.
Secondary intravenous lines: (a) a tandem intravenous alignment
One Module of the Primary Visual Cortex
Secondary syphilis rash.
Secondary and Tertiary Structure of Nucleic Acids
Secondary succession
Lobes of the brain, with primary receiving and integrating centers of the human cerebral cortex.