To illustrate images produced by small apertures. Comprises a polished wooden box, 15 x 10 x 10 cm with pinhole in front and ground glass screen at back. more...
To illustrate the principle of image formation due to light rays passing through small apertures. Comprising a polished wooden box with a ground glass screen at the rear end and an adjustable sliding front with a hole. more...
PIN HOLE CAMERA Two rectangular open-ended light proof wood boxes. One slides in to the other and contains a ground glass screen upon which image is formed. Other box has pinhole opening at closed end. brass rod. more...
To illustrate images produced by small apertures. Comprising a polished wooden box with a ground glass screen at one end and a hole at the other. more...
To illustrate images produced by small apertures. Comprising a polished wooden box with a ground glass screen at one end and a hole at the other. PR-369 Total Internal Reflection Apparatus To demonstrate the total internal reflection in a Perspex tube is form of (1) turn coil more...