At 1:03 PM -0700 5/9/01, Tim May wrote:
>
>Angle of incidence equals angle of reflection. If the flat plate 
>reflector is not perpencular to the beam, the beam will most 
>definitely not return "more or less directly back."

"Perpendicular" to the beam, as in orthogonal, at right angles, etc.


--Tim May

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