Total Internal Reflection
This interactive simulator explores Total Internal Reflection in Optics & Light. Find the critical angle. Fiber optics analogy. Use the controls to change the scenario; watch the visualization and any graphs or readouts to connect the model with lectures, labs, and homework.
Who it's for: Best once you already know the basic definitions and want to build intuition. Typical context: Optics & Light.
Key terms
- total
- internal
- reflection
- total internal reflection
- optics
- light
How it works
For n₁ > n₂, there is a critical angle θ_crit = arcsin(n₂/n₁). Rays incident from the denser side at θᵢ > θ_crit undergo total internal reflection instead of refracting out. Optical fibers trap light by TIR at the core–cladding interface.
Key equations
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