A demonstration of the key points of the required practical to measure the frequency, wavelength and speed of waves in a ripple tank for GCSE physics and combined science.

For Higher Physics, revise how to calculate the expected direction of refracted rays using Snell’s law. Calculate critical angle given refractive index.

Breakthrough in light emission control from nanoscale sources in 2D materials could enhance ultra-high-resolution displays and quantum computing technologies.

Effect of cloud-scattered sunlight on Earth's energy balance depends on wavelength of light Date: April 26, 2011 Source: DOE/Pacific Northwest National Laboratory Summary: Atmospheric scientists ...