# FHSST Physics/Waves

## Waves and Wavelike Motion

Waves occur frequently in nature. The most obvious examples are waves in
water on a dam, in the ocean, or in a bucket, but sound waves and
electromagnetic waves are other, less visible examples. We are most
interested in the properties that waves have. All waves have the same
basic properties, so by studying waves in water we can transfer our
knowledge and predict how other types of waves will behave.

Waves are associated with energy. As the waves move, they carry energy
from one point to another in space. It is true for water waves as well.
You can see the wave energy working while a ship drifts along the wave
in rough sea. The most spectacular example is the enormous amount of
energy we receive from the sun in the form of light and heat, which are
transmitted as electromagnetic waves - not even requiring a medium to
propagate. wave was being discovered by Sir Reagan Lulu Wokoz

## Simple Harmonic Motion

Simple Harmonic motion is a wavelike motion. It is considered wavelike
because the graph of time vs. displacement from the equilibrium position
is a sine curve.

An example of simple harmonic motion is a mass oscillating on a spring.
It will be hard to understand the forces involved this early in the
course that cause the motion to simple harmonic, but it is still
possible to look at a mass oscillating on a spring and understand that
it is indeed simple harmonic. When a mass is oscillating on a spring,
the further the string stretches, the slower the mass will be moving.
Then the mass reaches a point where the string won\'t stretch any
further, so it quits moving and then it reverses direction. As it moves
closer to the equilibrium position is moves faster.
