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Plancks constant (Each)

Item #: XAR090011

£96.16

Plancks constant (Each)

19 in stock

SKU: XAR090011 Categories: ,

Lascells Planck'‰۪s Constant-Modern LEDs (light emitting diodes) cover the
range from deep blue (430nm) to infrared (950nm). 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 an excellent illustration of modern
electronics and gives a good investigation into a difficult topic in Post-16
physics. The LEDs are mounted in a 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 but without power supply which
should be approximately 5V DC from any laboratory source.

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