For Glass lenses with smooth edges and varying focal lengths.
Modern technology and Faraday’s Law of Inductance join forces to create a virtually indestructible flashlight that has no need for batteries or bulbs. Shaking the torch causes a high strength magnet to pass back and forth between a wire coil giving charge to the flashlight’s capacitor that can be stored for months. 30 seconds of shaking generates enough power for up to 5 minutes of light. The super bright LED can be seen for up to a mile and never needs to be replaced! Ideal for outdoor activities Shock resistant - virtually indestructible Waterproof - floats on water no batteries needed - 30 second shake = up to 5 minutes of light Size: 170 x 40 x 40mm
Modern technology and Faraday’s Law of Inductance join forces to create a virtually indestructible flashlight that has no need for batteries or bulbs. Shaking the torch causes a high strength magnet to pass back and forth between a wire coil giving charge to the flashlight’s capacitor that can be stored for months. 30 seconds of shaking generates enough power for up to 5 minutes of light. The super bright LED can be seen for up to a mile and never needs to be replaced!
Size: 170 x 40 x 40mm
Modern technology and Faraday’s Law of Inductance join forces to create a virtually indestructible flashlight that has no need for batteries or bulbs. Shaking the torch causes a high strength magnet to pass back and forth between a wire coil giving charge to the flashlight’s capacitor that can be stored for months. 30 seconds of shaking generates enough power for up to 5 minutes of light. The super bright LED can be seen for up to a mile and never needs to be replaced! Ideal for outdoor activities Shock resistant - virtually indestructible Waterproof - floats on water no batteries needed - 30 second shake = up to 5 minutes of light Size: 285 x 54 x 54mm
Size: 285 x 54 x 54mm
Glass lenses with smooth edges and varying focal lengths, which fit a purpose made wooden lens holder. 2 X bi-concave and 2 X bi-convex lenses - of 100mm and 200mm focal length.
Single-sided optically excellent plastic mirrors. Simply score the surface with a sharp edge or cutting knife and bend to render to the required size. They are covered with a peel-off protective film to keep them clean and blemish free. Ideal for reflective symmetry, light experiments or in model making. A4 - 210mm x 297mm Pack of 10.
Single-sided optically excellent plastic mirrors. Simply score the surface with a sharp edge or cutting knife and bend to render to the required size. They are covered with a peel-off protective film to keep them clean and blemish free. Ideal for reflective symmetry, light experiments or in model making.
A4 - 210mm x 297mm Pack of 10.
