At first, make a white ball and then make a red box, which is bigger than
the ball, in front of the ball.

If I use the command "filter" or "transmit", I could see the ball through
the box.

But the color of ball(white) seem to be redder and dimmer than its original
because the light traverse through the red box.

If I put more red boxes in front of the ball, I will not be able to see the
ball because many boxes screen the light emitted from the white ball.

How can I see the white ball even if there are many boxes between the ball
and the camera?

Thank you.

JH

-- 
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 Yonsei University, Department of Astronomy
 Seoul, South Korea
 Graduate Student, Room #703
 Joo Heon Yoon in GEM
 jhy### [at] galaxyyonseiackr
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