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LED ARRAY [L.E.D]: Display
$ 190.00 excl. GST
• Comprises a 300mm high x Ø 30mm tower with eleven different coloured LED’s spanning the visible light spectrum evenly spaced along it’s length.
• There are eleven LED’s colours over all with some of these:
Blue turquoise | Bright green | Deep blue | Deep red | Green | Orange | Violet | White | Yellow.
• This LED array allows students to explore the action of colour filters, demonstrate diffraction at different wavelengths and confirm the wavelength for each individual colour.
• LED’s can all be illuminated at the one time or each colour can be individually illuminated by switching a rotary switch at the top of the LED display.
• Depending on the diffraction grating used first, second and third order fringes can be observed and used for doing calculations.
• By knowing the voltage and wavelength for each LED Planck’s Constant can be determined.
• Students have a great opportunity to consider and minimize sources of error in their experimental work.
• Each LED has it’s colour and wavelength printed alongside.
• Has an ON/OFF switch and powered by a 5 V DC mains adaptor (supplied).
In stock (can be backordered)
LED ARRAY [L.E.D]: Display
• Comprises a 300mm high x Ø 30mm tower with eleven different coloured LED’s spanning the visible light spectrum evenly spaced along it’s length.
• There are eleven LED’s colours over all with some of these:
Blue turquoise | Bright green | Deep blue | Deep red | Green | Orange | Violet | White | Yellow.
• This LED array allows students to explore the action of colour filters, demonstrate diffraction at different wavelengths and confirm the wavelength for each individual colour.
• LED's can all be illuminated at the one time or each colour can be individually illuminated by switching a rotary switch at the top of the LED display.
• Depending on the diffraction grating used first, second and third order fringes can be observed and used for doing calculations.
• By knowing the voltage and wavelength for each LED Planck’s Constant can be determined.
• Students have a great opportunity to consider and minimize sources of error in their experimental work.
• Each LED has it’s colour and wavelength printed alongside.
• Has an ON/OFF switch and powered by a 5 V DC mains adaptor (supplied).
(Wikipedia excerpt: ..."....A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor.[5] White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device.[6]
Appearing as practical electronic components in 1962, the earliest LEDs emitted low-intensity infrared (IR) light.[7] Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics. The first visible-light LEDs were of low intensity and limited to red.....")
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