Concept explainers
The seeing of a person hand by the eyes of that person on time or in the past.
Answer to Problem 25A
The hand will be seen assumed to in present not in the past as the time that the eyes taken very less time to see and can be neglected.
Explanation of Solution
Introduction : The any object we see if from reflection , the light takes 8 minutes to reach the earth.
As the distance between earth and sun is very large so the sun light takes 8 minutes to reach the earth from sun so the sun will appear as 8 minutes ago in the past. But the distance between person eyes & hand is very less so the hand can be seen on time not in the past
Conclusion:
The hand seen by the person is assumed to now not in the past.
Chapter 27 Solutions
Conceptual Physics: The High School Physics Program
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