Question
If you mark the position of the shadow cast by the top of a flagpole at the same clock time every day throughout the year, you will find that the marks trace out a figure-eight pattern. Explain why this happens by referring to the equation of time.
Step 1
The Earth revolves around the Sun in an elliptical orbit, which means that its distance from the Sun varies throughout the year. This causes the Earth's orbital speed to change, making the time it takes for the Earth to complete one full rotation (a solar day) Show more…
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Consider a clock at rest at the origin of the laboratory frame. ( $a$ ) Draw a spacetime diagram that illustrates that this clock ticks slow when observed from the reference frame of a rocket moving with respect to the laboratory at $v=0.8 c$. $(b)$ When 10 s have elapsed on the rocket clock, how many have ticked by on the lab clock?
$\rightarrow$ Explain Is the time between ticks of a moving clock greater than, less than, or the same as the time between ticks when the same clock at rest?
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