an exceptional way to demonstrate the Inverse Square law and
demonstrates ramifications of Four rays of light, simulated by strings, leave a point source undergoing rectilinear propagation.
they form 3, equidistant to each other, but different in size areas.
as the light spreads one, two and then three distances away from the light source, the rays subtend the first plane of one unit of area.
the second plane, at two distances away, is four units of area in size and the third is nine.
the area, over which the rays spread, is clearly visible on 3 clear, appropriately marked, sheets of Plexiglas.
each show the correct number of unit areas.
the INVERSE SQUARE LAW DEMONSTRATORTM shows the student clearly that as light travels, it spreads over larger and larger areas proportional to the distance squared.
this clearly illustrates why the intensity of the light, and forces like gravitational and electric, vary inversely with the square of the distance.
the apparatus is approximately 40 X 20 X 20 cm, large enough for everyone in the room to easily see.
DEMONSTRATES HOW AREA CHANGES WITH DISTANCE AND THAT THE INTENSITY OF LIGHT, GRAVITY, AND ALL FORCES DECREASE WITH DISTANCE
