At what speed does sound travel for the purposes of using a telemeter?

The speed of sound, for the purposes of using a telemeter, is typically taken to be approximately 340 meters per second under standard atmospheric conditions at sea level and at 20 degrees Celsius. This value is important for applications such as telemeters, where measurements rely on the accurate calculation of time intervals for sound waves traveling from a source to a receiver.

Knowing this speed allows for precise distance measurements based on the time it takes for sound to travel to the target and back. Variations in atmospheric conditions, temperature, and humidity can affect the speed of sound slightly, but 340 m/s is a reliable average used in calculations. This foundational understanding is crucial when applying the principles in acoustics or related fields in practical scenarios.