Lascells Planck's Constant

Lascells Planck's Constant

A selection of LEDs covers the range from deep blue to infra-red. By monitoring the voltage at which each LED just begins to emit light, a graph of energy input as a function of light emitted frequency can be plotted and an approximate value of Planck’s constant deduced. The system is supplied in a self-contained box with voltage control and monitoring points for current and voltage. A protection resistor is included to prevent damage to the LEDs. Complete with viewing tube. Requires a 5V d.c. laboratory power supply.

Shipped from our Manchester, UK Facility

Orders are securely packed and dispatched from our Manchester warehouse.