 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. Slinky

 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=f λ v= λ 2L  f=(nv)/2L  Standing wave where 1 λ =2L

Interference  Interference when two or more waves meet  Constructive interference- waves add get bigger  Destructive interference- waves get smaller and cancel out

λ short =c/f largest