Lucky for us, the average salaries of UK jobs are revealed annually by those helpful number-crunching pixies at the Office of National Statistics. The survey of a whopping 21,563,000 people's earnings will either delight or depress you depending on what end of the scale you see yourself in the next five years.
This is what is called transverse and longitudinal waves. The difference between transverse and longitudinal waves is the direction in which the waves shake. If the wave shakes perpendicular to the movement direction, it's a transverse wave, if it shakes in the movement direction, then it's a longitudinal wave. [Transverse Wave] It is easy to imagine a transverse wave. The waves of the ocean and the waves transmitted from a tightened rope when shaken are transverse waves.
Longitudinal Waves In a longitudinal wave, the motion of the medium is parallel to the direction of the wave . This means that the particles move left and right which in turn makes the other particles start to oscillate. Sound waves are longitudinal waves. Another example of a longitudinal wave is a P wave or primary wave during an earthquake. P waves are also known as compressional waves, because of the pushing and pulling they do. A transverse wave is a wave in which the motion of the medium is a right angles to the direction of the wave. A wave on a rope is a transverse wave. Light and other electromagnetic waves are also transverse waves.