THE electromagnetic spectrum includes radiation over a wide range of energies and a variety of categories, many of which one senses or uses every day. These include microwaves, television and ...

Gamma rays can also damage or kill the cells in a person's body. In order to be safe, exposure to ionising radiation needs to be kept as low as possible, especially for people who work with this ...

UV radiation is invisible to the eye and it is non-ionizing form of radiation in the 100 nm to 400 nm wavelength region of the electromagnetic spectrum ... UV lasers are not covered in this section; ...

Electromagnetic waves travel at 300,000,000 metres per second (m/s) through a vacuum. Electromagnetic waves can be separated into seven distinct groups in the spectrum. Each group contains a range ...

Electromagnetic radiation or electromagnetic waves are created due to periodic change of electric ... These radiations have the ability to cause chemical reactions and damage living cells beyond that ...