3.11 The Order of the Electromagnetic Spectrum

The Diagram bellow clearly shows the 7 parts of the E-M spectrum in order of decreasing wavelength, from left to right

An easy way to remember the order is with a mnemonic

For example for the E-M spectrum (RMIVUXG)

you could have:

Reading Music Is Very Unsatisfactory for Xylophones and Glockenspiels

and for the visible portion of the spectrum (ROYGBIV)

Richard Of York Gave Battle In Vain

Or just make up your own...