Shop at Amazon US

Contributions

If you like the website and want to contribute to the running costs then please do so below. All contributions are most welcome.

PayPal - The safer, easier way to pay online.

UV or ultraviolet light is a form of electromagnetic radiation with a wavelength shorter than visible light and therefore more energetic.

The wavelength band is from 10 to 400 nanometres.

The Electromagnetic Spectrum (credit:- Philip Ronan)

Glossary A B C D E F G H I J K L M N O P Q R S T U V W X Y Z