The word "twisted" (aka "chiral") describes the clockwise and counterclockwise rotation of the light's electromagnetic waves that mirror each other as it travels. By contrast, traditional light ...

Fluorescent substances are used in energy-efficient lamps - they absorb ultraviolet light produced inside the ... their nuclei can cause electromagnetic waves to be generated or absorbed.

Each colour within the visible light spectrum has its own narrow band of wavelength and frequency. When white light passes through a coloured filter, all colours are absorbed except for the colour ...