Given the temperature of a black body, the Stefan-Boltzmann equation determines the intensity (energy radiated per unit area per unit time) of the radiation source. It is given by I=oT¹ where a = 5.67 × 10-8 W/m²K¹ is the Stefan-Boltzmann constant. temperatures from part (c), what is the intensity of the sun, the light bulb, and the Earth?

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Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.