# data[].attributes.body
"A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium."

# data[].attributes.body
"a wave vibrating in the direction of propagation."

# data[].attributes.body
"A transverse wave is a moving wave that consists of oscillations occurring perpendicular (right angled) to the direction of energy transfer (or the propagation of the wave)."

# data[].attributes.body
"The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. In dry air at 0 °C, the speed of sound is 331.2 metres per second."

# data[].attributes.body
"The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299,792,458 metres per second."

# data[].attributes.body
"In physics, electromagnetic radiation refers to the waves of the electromagnetic field, propagating through space time, carrying electromagnetic radiant energy."

# data[].attributes.body
"The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye."

# data[].attributes.body
"Frequency is the number of occurrences of a repeating event per unit of time."

# data[].attributes.body
"the maximum extent of a vibration or oscillation, measured from the position of equilibrium."

# data[].attributes.body
"In physics, the wavelength of a sinusoidal wave is the spatial period of the wave—the distance over which the wave's shape repeats, and thus the inverse of the spatial frequency."