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Chapter 6: Q15DQ (page 1247)

What do you think would be different in everyday life if the speed of light were 10 m/s instead of 3.00脳108m/s

Short Answer

Expert verified

From the point of the observer in that universe, nothing would change

Step by step solution

01

Concept of the speed of the light

The speed of light, which is a constant, c, and has a specific value, is tied to all of the fundamental processes that occur around us. If the speed of light were to vary, other physical quantities such as mass, charge, and the colour of quarks would also shift proportionally. Although it would appear considerably slower to an outside observer, nothing would actually change for a person living in that universe.

Of course, some may argue that over a finite distance, such as the Sun-Earth, light would take longer to reach the Earth, but space and time are profoundly entwined with the speed of light via relations whose comprehension exceeds the scope of the book, and we could build a case for that.

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Most popular questions from this chapter

The speed of light relative to still water is 2.25脳108m/s .If the water is moving past us, the speed of light we measure depends on the speed of the water. Do these facts violate Einstein鈥檚 second postulate? Explain.

Assume that the universe has an edge. Placing yourself at that edge in a thought experiment, explain why this assumption violates the cosmological principle.

Explain why Fig. 38.4 shows that most photoelectrons have kinetic energies less than hf-桅 , and also explain how these smaller kinetic energies occur.

Can an object with constant acceleration reverse its direction of travel? Can it reverse its direction twice? In both cases, explain your reasoning.

Would you expect effects due to the photon nature of light to be generally more important at the low-frequency end of the electromagnetic spectrum (radio waves) or at the high-frequency end (x rays and gamma rays)? Why?
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