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09-Nov-2005, 04:26
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#1 |
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Retarded moron
Join Date: Jun 2002
Location: Australia, Melbourne
Posts: 2,949
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Physics question
You have a light ray and a normal.
Find the angle between them to find the light's intensity at the point? L = plane - lightPoint cos(N.L) = light intensity at point P? Sorry this is a bit misleading. Intensity = Ip * kd * cos(N.L) Sorry, this is an exam question I just want to know the answer. I forgot to cos the N.L and got an answer of -8 for the dot-prod of the 2 vectors. Ip = 150 Kd = 0.6 N.L = -8 I = 150 * .6 * cos(-8) I = 89.124 Correct? All other lightsources don't exist(ambient, specular) and neither does a reflection nor a viewer come into play.
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