snell {bioSNR}

Snell's Law

Description

This function is a reformated version of Snell's law that finds reflection or refraction angle given the two mediums longitudinal wave velocities.

Usage

snell(ang, v1, v2)

Arguments

ang

The known angle of relfection or refraction

v1

The longitudinal wave velocity of medium where angle (refraction or reflection) is known given in m/s.

v2

The longitudinal wave velocity of medium where angle (refraction or reflection) is unknown given in m/s.

Value

The opposing angle of reflection or refraction, respectfully

Examples

# Calculate the reflection angle given the angle of a black-tailed godwit sound
#source is 64 degrees, the speed is 1564 m/s in the first medium and 1494 m/s
#in the second medium.
snell(64,1564,1494)