Sound travels a mile in 5 seconds and light travels a mile in so short a time as to be practically unmeasurable. If you see a flash of lightning and 5 seconds later hear the thunder from it, how far away is the lightning? Answer. 25. Frank, John and ... How many minutes does it take a ray of light to come to the earth? Answer. \7.
|Title||:||The uneveness of the abilities of gifted children in California ...|
|Author||:||James Clarence De Voss|