A shadow can move faster than the speed of light.
Is it true that a shadow can move faster than the speed of light?
A shadow is merely a region where light is blocked, not a physical object or particle with mass, so its apparent movement is not limited by the speed of light.
Verdict: COMMON KNOWLEDGE · 0 sources for, 0 against · Last checked
The claim that a shadow can move faster than the speed of light is a well-established physical reality of kinematics and everyday observation, requiring no formal academic citation. Shadows are not material objects or information-carrying signals; therefore, points of intersection or absence of light can sweep across a distant surface at arbitrarily high speeds (such as a laser dot swept across the moon or a shadow cast across a light-years-wide surface). None of the retrieved papers directly address or test this basic optical phenomenon, rendering formal citations unnecessary as it constitutes common knowledge.
What does the evidence say?
The claim that a shadow can move faster than the speed of light is a well-established physical reality of kinematics and everyday observation, requiring no formal academic citation. Shadows are not material objects or information-carrying signals; therefore, points of intersection or absence of light can sweep across a distant surface at arbitrarily high speeds (such as a laser dot swept across the moon or a shadow cast across a light-years-wide surface). None of the retrieved papers directly address or test this basic optical phenomenon, rendering formal citations unnecessary as it constitutes common knowledge.
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