What are long waves?

What are long waves?

Long waves, also called infragravity waves, have a wave period of 30 seconds to several minutes. Astronomical tides represent one important example of long waves. Long waves can occur in shallow water, such as the Chesapeake Bay. But long waves are not limited to what is normally considered shallow water.

What causes long waves?

Severe storms moving inland often create a storm surge, a long wave caused by high winds and a continued low pressure area. Submarine earthquakes or landslides can displace a large amount of water very quickly, creating a series of very long waves called tsunamis.

What is the difference between long waves and short waves?

What is the difference between long-wave and short-wave infrared radiation? Short-wave infrared energy comes directly from the sun, but is not felt as heat. It converts into heat when it strikes an object. Long-wave infrared energy is the heat radiated from an object, which has received short-wave infrared radiation.

Is AM Radio same as MW?

An AM signal may be either long wave (LW), medium wave (MW) or short wave (SW) depending upon whether the frequency of the carrier wave is low, medium or high. Medium wave (MW) signals are transmitted using amplitude modulation (AM) and the terms are used interchangeably.

Is long wave the same as AM?

AM, which stands for Amplitude Modulation (AM) is the oldest radio broadcasting system in the UK. The term AM is commonly used to cover both Medium Wave (MW) and Long Wave (LW). All AM radio stations broadcast in mono. It only broadcasts Radio 4 on LW.

Is Radio 4 still on long wave?

Radio 4 is also available on Long Wave at 198 LW and on Medium Wave in the following locations: Aberdeen – 1449 MW….Networks.

Radio 1	97-99 FM
Radio 4	92-95 FM, 103-105 FM (with local variations for Scotland, Wales and Northern Ireland) For Long Wave and Medium Wave frequencies, see below.
Radio 5 Live	909/693 MW

What are long and short waves?

Waves of blue light have a shorter wavelength than waves of red light. The frequency of a wave is inversely proportional to its wavelength. That means that waves with a high frequency have a short wavelength, while waves with a low frequency have a longer wavelength. Light waves have very, very short wavelengths.