In the age of the LED light bulb, consumers have an unfathomable range of lighting options. This has, perversely, made the ...

1 shows a white-light LED in action). It is possible to generate ... two or more wavelengths are required to generate a broad spectrum of light that is a better approximation of a black-body ...

White light is made of a spectrum of different colours ... after an outbreak of bubonic plague led to Cambridge University closing in 1666. Newton purchased his first prism and returned to ...