The highest part of the wave is called the crest. The lowest part is called the trough.

Wave: The repeating and periodic disturbance that travels through a medium (e.g. water) from one location to another location. Wave Crest: The highest part of a wave. Wave Trough: The lowest part of a wave. Wave Height: The vertical distance between the wave trough and the wave crest.

crest

Gamma rays

The most dangerous frequencies of electromagnetic energy are X-rays, gamma rays, ultraviolet light and microwaves. X-rays, gamma rays and UV light can damage living tissues, and microwaves can cook them.

In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

They all have things in common. In a vacuum, they all travel at the same speed – the speed of light – which is 3 × 108 m/s. They are all transverse waves, with the oscillations being electric and magnetic fields. Like all waves, they can be reflected, refracted and diffracted.

P-waves

Einstein’s theory of special relativity sets the absolute speed limit at which a wave can travel which is the speed of light, and is equal to about 300,000 km per second.

Wave velocity, distance traversed by a periodic, or cyclic, motion per unit time (in any direction). The velocity of a wave is equal to the product of its wavelength and frequency (number of vibrations per second) and is independent of its intensity.

Summary. Wave speed is the distance a wave travels in a given amount of time, such as the number of meters it travels per second. Wave speed is related to wavelength and wave frequency by the equation: Speed = Wavelength x Frequency.

wave is a called the crest, and the low point is called the trough. The distance between successive crests or troughs is called the wavelength. The height of a wave is the amplitude.…