Both Uses of
spectrum
in
Childhood's End
- It would climb the spectrum and hover at the edge of yellow, and the cycle would reverse itself, the, star would expand and cool, becoming once more a ragged, flame-red cloud.... ("Typical pulsating variable," said Rashaverak eagerly.†
Chpt 18spectrum = a range of things between two boundaries
- Occasionally he caught complex rhythmical patterns racing up and down through the audible spectrum, to vanish at the upper or lower edge of hearing.†
Chpt 22 *
Definition:
a range of things between two boundaries -- such as light waves of a given colors, or opinions about whether an idea is good or not