Incident Angle in Illumination Formulas

The incident angle refers to the angle between the impact direction and the solid surface. For a vertical impact, this angle is 90 degrees. And is denoted by θ_i. Incident Angle is usually measured using the Degree for Angle. Note that the value of Incident Angle is always negative.

Formulas to find Incident Angle in Illumination

fxIncident Angle using Snell's LawGo

Illumination formulas that make use of Incident Angle

fxLambert's Cosine LawGo

fxRefracted Angle using Snell's LawGo

fxIndex of RefractionGo

List of variables in Illumination formulas

fx Refractive Index of Medium 2 Go

fx Refracted Angle Go

fx Refractive Index of Medium 1 Go

FAQ

What is the Incident Angle?

The incident angle refers to the angle between the impact direction and the solid surface. For a vertical impact, this angle is 90 degrees. Incident Angle is usually measured using the Degree for Angle. Note that the value of Incident Angle is always negative.

Can the Incident Angle be negative?

Yes, the Incident Angle, measured in Angle can be negative.

What unit is used to measure Incident Angle?

Incident Angle is usually measured using the Degree[°] for Angle. Radian[°], Minute[°], Second[°] are the few other units in which Incident Angle can be measured.

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