The coloured diagrams at right represent the normalized instantaneous ... Many physical phenomena – including heat transfer, fluid flow and electromagnetic wave propagation, to name just three – can ...

All of the waves in the electromagnetic spectrum are transverse ... and the particles of the rope vibrate vertically. In the diagram above the rope moves up and down but the energy is transferred ...

The electromagnetic spectrum consists of a group ... There are many other parts of the EM spectrum that we cannot see. The diagram below illustrates these parts.

Electromagnetic radiation is the general term for ... As mentioned above, hydrogen and hydroxyl emit radio waves at particular frequencies. The diagram below shows the power emitted by a cloud of ...