Speed of light on air (fiber Optics)


• Light Velocity measuring apparatus consists of (receiver, transmitted and other electronics component) .
• Digital storge Oscilloscope 25MHz.
• 2 BNC Cables.
• Cavities to mount Liquid.
• Cube of glass from silica.
• Fiber optic cables (20m and 15cm).
• Holder for equipment.


• To determine the velocity of light in air when passing through fiber optics cable.
• Demonstrating the principle of an echo sounder.
• Determining the velocity of sound in air from the transit time of a sound pulse and the distance to the reflecting object.
• Determining distance by measuring the transit time of the sound pulse.