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**orison** · 08-19-2012, 01:17 PM

Devil's advocate mode.

> It is defined as the luminous intensity of light travelling in a particular direction, divided by the area. ... the same as it is under normal conditions on the surface of Pluto.

It'd be zero then, wouldn't it, because light never travels exactly in a particular prespecified direction, the photons would be a squillionth of a degree off.

08-19-2012, 01:17 PM	#4
orison Join Date Nov 2005 Posts 455 Senior Member	Devil's advocate mode. > It is defined as the luminous intensity of light travelling in a particular direction, divided by the area. ... the same as it is under normal conditions on the surface of Pluto. It'd be zero then, wouldn't it, because light never travels exactly in a particular prespecified direction, the photons would be a squillionth of a degree off.
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