Save guides, add subjects and pick up where you left off with your BBC account. Waves transfer energy from one place to another. Light from the Sun travels through space and through the atmosphere ...

EM waves are 'transverse' waves. This means that they are measured by ... The highest point of a wave is known as 'crest', whereas the lowest point is known as 'trough'. Electromagnetic waves can be ...

“The Atlantic Ocean has never looked so beautiful. As sailors we rely on wind to get around but when there isn’t any you cannot help but be in awe of the sheer beauty. We hopped up on the boom for ...

A ridge will persist over northern Queensland for several days. A weak trough is moving slowly east across central and southern Queensland and will move offshore early on Monday. A new ridge will ...

At other times of the year, east coast lows often develop rapidly just offshore. This can happen within an existing trough of low pressure, due to favourable conditions in the upper atmosphere ...