Beyond the Visible (1952) by H.J. Campbell

This is a second-hand copy of the book Beyond the Visible (1952) by H.J. Campbell. 

Condition: This is a used book in good condition. The dustjacket is worn with creasing, rubbing, and has been price clipped - see photos.

Publisher: Hamilton & Co.
Year: 1952
Format: Hardback with dustjacket
Pages: 189
Condition: Used (Good)

"All around us are invisible things. We become aware of them when we switch on the radio. The invisible things are electromagnetic waves. But... maybe there are other things...

Our eyes are sensitive to only a narrow band of the electromagnetic spectrum that we call light. Beyond that band on either side are many other radiations that we cannot see. Perhaps, in these radiations there are things that some people would rather not see..."