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Modern LEDs (light emitting diodes) cover the range from deep blue (440nm) to infrared (940nm). 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. Complete with viewing tube but without power supply with stackable lead red 2pcs. & black 3pcs.
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Shiv Dial Sud & Sons, brand name Supertek, founded in 1943 is widely recognized as a leading and trusted manufacturer of Educational Teaching Aids, Laboratory Glassware and Essentials. We are an ISO 9001:2015 Quality Systems Certified Organization. Read More…
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+1 (630) 345-3450
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