An RGB LED. By mixing the red, green, and blue colors, this LED can emit white light The first white LEDs weren’t explicitly white LEDs. Instead, red, green, and blue LEDs were packed into a ...

White light-emitting diodes (LEDs) have tremendous potential for energy-efficient illumination. However, achieving white light emission with a 'colour temperature' that is not too blue is a ...

Lasers are known for the monochromatic nature of their light, so much so that you might never have thought there could be such a thing as a white laser. But in the weird world of physics ...

The following is a summary of “Efficient removal of naturally-occurring lipofuscin autofluorescence in human nervous tissue using high-intensity white light,” published in the March 2025 issue of ...

Philips Hue bulbs are some of the best smart lights around, and this is the perfect time to stock up, thanks to huge ...

They aren’t smart in the conventional sense, in that they can’t be scheduled or controlled with an app, but you can adjust ...

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 ...