Refraktionswinkel /m(r)/Q_HỌC/
[EN] angle of refraction (r)
[VI] góc khúc xạ
r /v_tắt/Q_HỌC (Brechungswinkel, Refraktionswinkel) V_LÝ (Brechungswinkel)/
[EN] r (angle of refraction)
[VI] góc khúc xạ
Brechungswinkel /m (r)/Q_HỌC, V_LÝ/
[EN] angle of refraction (r)
[VI] góc khúc xạ