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comets lose their material poynting and robertson have calculated that a meteor grain which orbits around the sun, gets nearer and nearer to the sun until it finally evaporates on its surface.
kometen verlieren ihr material poynting und robertson haben berechnet, daß ein meteorkörnchen, das um die sonne kreist, sich immer mehr der sonne nähert, bis es schließlich auf der sonnenoberfläche verdampft.
i've also known that for a long time. i know that the energy flux of an electromagnetic wave is described by the poynting vector, which is the cross product of the electric and magnetic field vectors - perhaps multiplied by a constant; i don't have all the details memorized but i do understand the concept.
i've also known that for a long time. i know that the energy flux of an electromagnetic wave is described by the poynting vector, which is the cross product of the electric and magnetic field vectors - perhaps multiplied by a constant; i don't have all the details memorized but i do understand the concept.