When you shine a flashlight into a glass of water, the beam bends. That simple observation, familiar since ancient times, ...

Physicists are involved in an unusually heated debate over the reality of a new kind of refraction and about the possibility of making perfect lenses. Edwin Cartlidge reports. If you think science is ...

Physicists in Germany claim to have found the first naturally occurring material that has a negative, rather than a positive, refractive index. The material -- a metallic ferromagnet -- is very ...

Students use mirror equations to determine the position and type. Students use mirror equations to determine the position, type, and size of mirror images for curved mirrors mathematically. Optical ...

When the moon is completely enveloped by the Earth's shadow, yet glows with a mysterious dark red light—this astronomical wonder known as a total lunar eclipse actually conceals two core concepts from ...

The questions in this quiz are suitable for GCSE physics students who are studying reflection of waves and refraction of waves. If you struggled with the quiz, don't panic - we've got you! You can ...

Light is a nimble gymnast. It travels in many colors and frequencies. Its waves, whether long or short, can shift to be longer or shorter. Light waves change direction. They bounce. What light can’t ...

This film demonstrates the measurement of the speed of light in both air and water using experimental setups. The first experiment involves measuring the time it takes for light to travel a known ...

The video has amassed more than 80,000 views on Twitter. A unique way of teaching can create an enjoyable and productive classroom experience for students where they can learn important academic and ...