The electromagnetic spectrum is a continuum of all electromagnetic waves arranged according to frequency and wavelength . The sun, earth, and other bodies radiate electromagnetic energy of varying wavelengths. Electromagnetic energy passes through space at the speed of light in the form of sinusoidal waves.
Read moreWhy is it called the electromagnetic spectrum?
Electromagnetic waves are produced by the motion of electrically charged particles. These waves are also called “electromagnetic radiation” because they radiate from the electrically charged particles .
Read moreWhat uses low frequency radio waves?
Because low frequency waves travel globally, they have practical uses. Long before GPS existed, engineers used low frequency waves broadcast from radio stations to determine location anywhere on the planet . And various navies have been using low frequency waves to communicate with submarines across an entire ocean.
Read moreWhat are low and medium frequency radio waves used for?
Frequencies immediately below MF are denoted low frequency (LF), while the first band of higher frequencies is known as high frequency (HF). MF is mostly used for AM radio broadcasting, navigational radio beacons, maritime ship-to-shore communication, and transoceanic air traffic control .
Read moreWhat are high frequency radio waves used for?
The main uses of the high frequency spectrum are: Military and governmental communication systems . Aviation air-to-ground communications. Amateur radio.
Read moreIs a short wavelength high or low pitch?
Scientists often draw sound waves as wavy lines, like these graphs. The distance between the peaks of the waves is called the wavelength. High–pitched sounds have short wavelengths , which means that the peaks are close together. Low–pitched sounds have longer wavelengths, so the peaks are more spread out.
Read moreDoes higher frequency mean longer wavelength?
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.
Read more