Question: User: Scene 4: Solved Example 1 - Wave Parameters Across Boundary Visual Prompt for AI Video Generator: Prompt: An animated physics board displaying a solved problem with dynamic diagram overlays[cite: 16]. Incident wavefronts in Medium 1 strike boundary at incident angle θ1 = 45° with speed v1 and wavelength λ1 = 1.4 cm, frequency f = 50 Hz[cite: 16]. In Medium 2, refracted angle θ2 = 30°[cite: 16]. Step 1 animates: 1n2 = sin(45°)/sin(30°) = (1/sqrt(2)) / (0.5) = 1.41[cite: 16]. Step 2 calculates speeds: v1 = f * λ1 = 50 * 1.4 = 70 cm/s[cite: 16]; v2 = v1 / 1n2 = 50 cm/s[cite: 16]. Step 3 calculates λ2 = v2 / f = 1.0 cm[cite: 16]. Equations glow step-by-step. English Voiceover & Text: Voiceover: "Let's solve Example 1! Given an incident angle of 45 degrees and a refracted angle of 30 degrees, the relative refractive index 1n2 equals 1.41[cite: 16]. Using frequency and wavelength in Medium 1, speed v1 is 70 cm/s[cite: 16]. Dividing by 1n2 gives Medium 2 speed at 50 cm/s and a reduced wavelength of 1.0 cm[cite: 16]!"