Experiment: Inverse square law (230 V, 50/60 Hz)

Experiment: Inverse square law (230 V, 50/60 Hz), 8000691 [UE4050100-230], Intensity of Radiation
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Objective: Verify the inverse square law for the intensity of radiation from a source of light

According to the inverse square law, the intensity of radiation from a light source, i.e. the power per unit area, is inversely proportional to the square of the distance from the source. This will be investigated in an experiment using an incandescent light bulb. When the distance from the lamp is much greater than the size of the filament, such a bulb can be regarded as a point source of light. In order to measure the relative intensity of the radiation, a Moll thermopile is used.

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Stefan Boltzmann lamp, 1008523 [U8490050], Optical Lamps on Stem

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1008523 [U8490050]
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Thermopile, 1000824 [U8441301], Greenhouse Effect

Thermopile

1000824 [U8441301]
Unit price
340.00 EUR
DC Power Supply 20 V, 5 A (230 V, 50/60 Hz), 1003312 [U33020-230], Power Supplies

DC Power Supply 20 V, 5 A (230 V, 50/60 Hz)

1003312 [U33020-230]
Unit price
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Digital Multimeter P1035, 1002781 [U11806], Hand-held Digital Measuring Instruments

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Ruler, 1 m, 1000742 [U8401550], Accessory - Measurement of Length

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1000742 [U8401550]
Unit price
27.20 EUR
Barrel Foot, 500 g, 1001046 [U8611210], Tripods and Barrel Feet

Barrel Foot, 500 g

1001046 [U8611210]
Unit price
44.70 EUR
Set of 15 Safety Experiment Leads, 75 cm, 1002843 [U138021], Circuits

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1002843 [U138021]
Unit price
96.00 EUR
Measurement Amplifier U (230 V, 50/60 Hz), 1020742 [U8557560-230], Measuring Amplifier

Measurement Amplifier U (230 V, 50/60 Hz)

1020742 [U8557560-230]
Unit price
472.00 EUR
Item No.: 8000691 [UE4050100-230]
Brand 3B Scientific
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