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.

A form of electromagnetic radiation with a longer wavelength (shorter frequency) and therefore lower energy than visible light. The IR wavelength band spans from 700 nm to 1 mm of the electromagnetic spectrum.

IR images show dust content. The best results are obtained from space-based telescopes since the atmosphere absorbs most IR radiation before it reaches the ground.

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