Photometric law of distance with Cobra4 – inverse square law
The luminous intensity emitted by a punctual source is determined as a function of distance.
- find out how exactly it becomes darker with increasing distance from a lightsource
- get results fast and reproducible with a data-logging system
- analize results easily and compare them to theory using a computer
USB charger for Cobra4 Mobile-Link 2 and Wireless/USB-Link
Screen, metal, 300 x 300 mm
Cobra4 Wireless/USB-Link incl. USB cable
Cobra4 Sensor-Unit Motion
Cobra4 Sensor-Unit Energy: Current, voltage, work, power
Holder for sensors with support rod
Photo diode, G1
Stand tube
Meter scale, l = 1000 mm
Distributor
Filament lamp 6V/5A, E14
Lamp holder E 14,on stem
Connecting cord, 32 A, 750 mm, red
Connecting cord, 32 A, 750 mm, blue
curricuLAB measureLAB
PHYWE power supply, 230 V, DC: 0…12 V, 2 A / AC: 6 V, 12 V, 5 A
Right angle clamp expert
Barrel base expert
Bench clamp expert
- The luminous intensity emitted by a punctual source is determined as a function of distance from the source.
- The photometric law of distance is verified by plotting illuminance as a function of the reciprocal value of the square of the distance.
- Luminous flux
- Quantity of light
- Luminous intensity
- Illuminance
- Luminance