A pinhole camera (camera obscura) is easy to make… Take an old cardboard box and cut a window in one end. Tape aluminum foil over the window and poke a hole through it with a pin. The rounder the hole, the better it works. Aim the hole at the sun and watch the projected image of the sun inside the box. Use a piece of white paper in the box as a projection screen for better contrast.
A pinhole camera (camera obscura) is easy to make… Take an old cardboard box and cut a window in one end. Tape aluminum foil over the window and poke a hole through it with a pin. The rounder the hole, the better it works. Aim the hole at the sun and watch the projected image of the sun inside the box. Use a piece of white paper in the box as a projection screen for better contrast.