(1) Different types of electromagnetic radiation such as radio waves, microwaves, visible light, and x-rays are associated with specific wavelengths. A spectrophotometer is an instrument that performs ...

Purple is a combination of wavelengths from opposite extremes of the spectrum, which technically deosn’t make any sense, but ...

massless particles that travel at the speed of light (300,000 kilometers per second in a vacuum). Every photon is characterized by wavelength (the distance from the crest of one wave to the crest ...

Each colour within the visible light spectrum has its own narrow band of wavelength and frequency. An object appears to be black if it absorbs all the wavelengths of visible light. For example ...

Concentrating light in a volume as small as the wavelength itself is a challenge that is crucial for numerous applications.

Stupid question, but” is a column answering the not-so-stupid questions that, at this point, we’re all too afraid to ask. The ...

The question “are we alone in the universe?” has fascinated people for centuries. In 1959 two Cornell University physicists described how we might answer that question through interstellar ...

A team of researchers from the Netherlands and the U.S. has found a new way to concentrate light in an incredibly tiny ...

The film explores the properties of sound waves in air, demonstrating that sound travels at approximately 1,100 feet per second and reflects similarly to light ... and wavelength is also ...