To an astronaut in outer space, the sky appears black. This is because there is no atmosphere to scatter sunlight and create the blue sky effect seen from Earth. Instead, the darkness of space dominates the visual field, punctuated by ...
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The photoelectric effect confirms the particle nature of radiation. It demonstrates that light can behave as discrete particles (photons), where each photon carries a specific amount of energy that can eject electrons from a material, a phenomenon inconsistent with wave ...
Wearing white clothes in summer is comfortable because white reflects most of the sunlight, reducing heat absorption. This reflection minimizes the heat retained by the clothes, keeping the body cooler.