| |
 |
|
Ray Track Apparatus
(LT-2084) |
Wood board with matt white surfaces, mounted on plastic
feet carries a circular scale with 0-360°, four quadrants 0-
90° graduated every 2° , removable turntable 170mm dia
with 2 lines at right angles and a Ray Box with a 12V, 24W
bulb. Supplied with a cylindrical convex lens of focal length
75mm and two double screens, giving one wide slit and
one each single, three and five slits. |
|
|
|
|
