Speed of Light Meter Set

Function and Applications

The complete set to measure the light velocity in air, transparent liquids and solids.

Benefits

• Light speed and distance measurement with one device – state-of-the-art digital measurement technology makes it possible
• The device impresses with its simple design and minimal adjustment requirements
• The phase comparison method of a high-frequency modulated laser beam allows the speed of light in air to be measured with an accuracy of 2%
• Measurements can be performed with or without an oscilloscope
• The integrated display of all relevant measured variables (ƒ, Δφ, Δt, Δx) makes the device particularly attractive for practical work and demonstration experiments

Equipment and Technical Data

• Modulation frequency: 50.0 MHz (quartz stabilised)
• Laser protection class: Class 2 according to DIN EN 60825-1
• Digital display: 3-digit LED display
• Digit height: 20 mm
• Operating voltage: 12 VDC (suitable power supply unit 12 VDC/2.25 A,
• 12151-99 included in delivery)
• Power consumption: 5 W
• Scope of delivery:

• • 1 x  light velocity measuring apparatus
  • 1 x retroreflector with stem
  • 1 x power supply 12 V/ 2 A
  • 1 x slide mount for optical bench
  • 1 x optical bench, l = 1800 mm
  • 1 x holder for speed of light measuring instrument
  • 1 x acrylic glass cylinder with a holder, 1 x tubular cell with a holder
  • 1 x USB data cable

• Dimensions (mm): 206 x 130 x 160
• Weight: approx. 2 kg