TOPIC 7 LAB

Wave toolkit

Change the physical quantities and watch the mathematical relationships respond.

Wave equation

Frequency and wavelength determine propagation speed.

f / Hzλ / m

v = fλ40.00 m s⁻¹

Compare a spatial separation with one wavelength.

Δx / mλ / m

Δφ = 360°Δx/λ90.00 °

1.571 rad

Move away from a point source with constant power.

I₁ / W m⁻²r₁ / mr₂ / m

I₂ = I₁(r₁/r₂)²8.000 W m⁻²

Apply Malus's law to plane-polarised light.

I₀ / W m⁻²θ / degrees

I = I₀ cos²θ60.00 W m⁻²

75.0% transmitted