Planck’s Constant LED Apparatus

Code: EPC7000

A multipurpose unit that allows the user to easily calculate Planck’s constant, to measure the wavelength of coloured light, demonstrate colour light transmission through colour filters and show the diffraction patterns for various wavelengths of coloured light using a range of 4 LEDs (Red, Yellow, Green and Blue) covering the light range from deep blue at 470nm to near IR at 940nm.

Category: science equipments and consumables

Description

Description

Box mounted with 5 x 4mm sockets for attachment to an ammeter or voltmeter to display measurements. Monitoring the voltage of each LED a graph of energy input as a function of light frequency emitted can be measured with an approximate value of Plank’s constant calculated.

Supplied with 500 lines/mm diffraction grating
Designed and manufactured in the UK

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Settings Planck's Constant LED Apparatus remove Capacitance Substitution Box Class set of 15 remove Lamp Brightness Experiment remove Resistance Substitution Box remove Irwin 4 x D Cell Battery Holder Pack of 10 remove Capacitance Substitution Box remove

Name Planck's Constant LED Apparatus remove Capacitance Substitution Box Class set of 15 remove Lamp Brightness Experiment remove Resistance Substitution Box remove Irwin 4 x D Cell Battery Holder Pack of 10 remove Capacitance Substitution Box remove

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Description

Code: EPC7000

A multipurpose unit that allows the user to easily calculate Planck's constant, to measure the wavelength of coloured light, demonstrate colour light transmission through colour filters and show the diffraction patterns for various wavelengths of coloured light using a range of 4 LEDs (Red, Yellow, Green and Blue) covering the light range from deep blue at 470nm to near IR at 940nm.

Code: IPC-5865-X

Class set of 15 Capacitance Substitution Boxes. The IPC Capacitance Substitution Box (IPC-5861-X) provides the easily selection of 12 preferred value capacitors, ranging from 100pF to 0.47µF. The values range from: 100pF, 220pF, 470pF, 1nF, 2n2, 4n7, 10nF, 22nF, 47nF, 0.1µF, 0.22µF and 0.47µF. All the capacitors offer a maximum voltage rating of 50V (AC or DC), with actual capacitance value tolerances of ±5% to ±10%. The unit is housed in a robust ABS plastic case with rotary selector switch and a pair of 4mm connection sockets.

Code: ELB8000

Students often think that the brightness of a lamp is only dependent on the current flowing through it. The unit allows the teacher to safely switch a 12V lamp in series with a mains lamp and study the current flow through them.

Code: ERS8050

A six-decade resistance substitution box designed for use in educational establishments.

Code: ECS8100

Our five-decade capacitance substitution box has been specifically designed for the schools market with its clear display and ease of use.

Unit will simulate capacitances from 100pF to 9.9999µF in 100pF steps
Max. voltage 50V DC
The required capacitance is set by a counter with the value displayed in µF, nF and pF
Output is via 4mm terminals with 4mm sockets
Housed in a sturdy ABS box

Content

Supplied with 500 lines/mm diffraction grating
Designed and manufactured in the UK

Description : Capacitance Substitution Box Part Number : IPC-5861-X Electrical Supply : 50VAC/DC Maximum Dimensions : 75 x 100 x 40mm Mass : 0.15kg Capacitance Tolerance : ±5% to ±10% Electrical Connections : 4mm Sockets

This includes kit includes the use of a safety mains lamp socket, which has a built in a switching system that only allows it to be switched on when a lamp is inserted. We have also included two switches, which must be pressed simultaneously to route the mains current through the low voltage lamp. Furthermore, the switches are sited at opposite ends of the case, requiring two hands to operate them. However, it must be appreciated that you are working with potentially lethal voltages and currents and therefore extra care should be taken.

Supplied with 1 x 240V 100W lamp and 1 x 12V 5W lamp and mains power lead.

Simulates resistances from 1Ω to 999,999Ω in 1Ω steps
The required resistance is set by selecting the correct value from six rotary decade switches which clearly indicate the value selected by the student
An additional 1kΩ resistor is provided connected between one of the terminals of the internal resistance and a third terminal so the unit can be used as an accurate potential divider
All outputs are on 4mm terminals with 4mm sockets
Housed in a tough ABS box with non-slip rubber feet
Voltage rating 250V
Power rating 600mW
Dimensions 110 x 75 x 50mm
Designed and manufactured in the UK

Code: EBH0004

The Irwin Tapped Battery Holder holds 4 x D (R20) batteries with outputs at 1.5, 3, 4.5 and 6V. Batteries and leads not supplied. Each output has a 4mm socket. Manufactured in the UK from premium strong perspex.

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