Science Spectrum 3' 2004 Ed.

Science Spectrum 3' 2004 Ed.

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Make a screen out of the bed sheet or a big piece of white cloth. Switch off the light to make the room dark. Set a lamp behind the bed sheet/ cloth. 2. Place a toy behind the screen, about 10 cm away from the source of light. Notice the size ofanbsp;...

Title:Science Spectrum 3' 2004 Ed.
Author:Fallaria, Et Al
Publisher:Rex Bookstore, Inc. -


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