It sounds fast, but Hertz are slow. One Kilohertz (KHz) is 1,000 cycles a second or 60,000 bpm; one Megahertz (MHz) is 1,000 times that; and one Gigahertz (GHz) is 1,000 times that. Far too fast ...

This page accompanies the Lightspeed activity guide. For help with working out averages (or means), take a look at either Skillswise or Bitesize. Once you have an average for the distance between ...

The unit of frequency is the hertz (Hz). 1 Hz is one wave per second. It is common for kilohertz (kHz), megahertz (MHz) and gigahertz (GHz) to be used when waves have very high frequencies.