More Waves

Waves

Waves are the means by which energy is transferred from one

point to another

There are two types of waves: transverse and longitudinal

Ex. Rope

Ex. Slin

ky

Medium- what the wave travels through Ex. Water, spring, string, air

Longitudinal waves- sound waves, seismic waves or pressure waves

Transverse waves- electromagnetic waves

Waves

Parts of a Wave

the height of the wave

Distance between two points

Frequency- the number wave that pass a point in a second

Waves

The Wave Equations

Waves

Reflection: bounce off a surface

Refraction: bend through an object

Diffraction: waves wrapping around an edge

Wave Movement

Waves

Resonance: vibrations caused by waves

Polarization: filters block out certain wavelengths and allow only certain waves through

Wave Movement

Standing Waves Between two

barriers- node on each end. At the nodes, the wave changes direction.

n= # of antinodes

v=fλ

v=λ2L

f=(nv)/2L

Standing wave where 1λ=2L

Interference Interference when two

or more waves meet Constructive

interference- waves add get bigger

Destructive interference- waves get smaller and cancel out

λshort=c/flargest