Waves (1 Viewer)

[futfut]

What are the properties of waves?


What are the properties of sound waves?

Thanks, only reply tonight!!

 

[sunjet]

Properties of waves:

1. Reflection
2. Refraction
3. Diffraction
4. Interference

All waves of the electromagnetic spectrum.

 

[Constip8edSkunk]

a wave is a trasferrance of energy through a form oscillation, it can be longitudinal or transverse, it requires a medium (except EMR).

sound waves are longitudinal, ie the direction of oscillation is the same as the direction of propagation...they travel at 300 something ms^-1 (just google it), it travels in straight lines and can be reflected. it requires a medium for propagation.

 

[wogboy]

And don't forget polarisation (for transverse waves only).

 

[Xayma]

Originally posted by Constip8edSkunk
sound waves are longitudinal, ie the direction of oscillation is the same as the direction of propagation...they travel at 300 something ms^-1 (just google it)

Sound Travels through air at 340 ms^-1, the speed at which sound will travel through a different medium is dependant upon the elasticity of the medium.

 

[phungus]

Can some1 plz explain what polarisation is?
Thxz

 

[wogboy]

Can some1 plz explain what polarisation is?

Polarisation is a property of a transverse (not longitudinal) wave, which describes in which plane in 3D space the wave is oscillating. If the wave oscillates in only one direction (e.g. up & down) then the wave is said to be polarised. On the other hand if it oscillates in more than one direction (i.e. in multiple planes), then the wave is unpolarised.

For example, light is a transverse electromagnetic wave, and is composed of an oscillating electric field (also an oscillating magnetic field, but you can ignore this for the purpose of polarisation). Light can be polarised by making these electric field oscillations only occur in one direction, and this is often done with a polariser (a piece of film).

 

[phungus]

ahh ok thxz alot!

 

[t-i-m-m-y]

photons