Скачать или смотреть Why is the Sun so Bright Compared to Other Stars?

This new Graviton Media video asks what may appear to be an obvious question: Why is the Sun so Bright Compared to Other Stars? However, the question forces us to objectively and scientifically define what is ultimately a subjective experience—the experience of brightness. Physicists and astronomers have defined brightness in two, closely-related ways, irradiance and apparent visual magnitude, with the latter defined by the former. Light carries energy, and brightness can be determined by the density of that energy when it strikes our eyes. To learn more about these interesting concepts and units of measure, go watch the video, which includes facts and figures as well as concrete demonstrations.
At eight minutes long, the video is perfect for a brief period of freetime or waiting during your day. Take some time to learn more about the universe and our measurements of it. I can guarantee that you will be enlightened.
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