What is the difference between longlitudinal waves and transverse waves

also what does it mean when a wave is polarised ?

Answers
A wave is characterised by a disturbance in the medium in which it travels, or in the case of EM waves, an electrical and magnetic disturbance in space. If the disturbance is at right angles to the direction of the wave's travel, the wave is "transverse". If the disturbance is parallel to the direction of the wave's travel, the wave is longitudinal.
ianmoth
21 March 2012
In an EM wave, generally the E and M fields are random. However, they can be made so that the E fields are all in one direction. If they are, then the wave is polarised. Look at your TV antenna. If the Aluminium rods are horizontal then your TV signal is horizontally polarized.
ianmoth
21 March 2012
What sort of waves are you looking at (i.e. studying) at the moment?
ianmoth
21 March 2012
Does your tuition cover the following topics: Mechanics -scalars and vectors, Moments, Motion along a straight line, Projectile motion, Newtons laws of motion, Work energy and power and conservation of energy Materials - Properties of solids and The Young modulus (E) Waves - Progressive waves etc Refraction and diffraction and interference please could you reply back explain what topics of these you cover, and when suitable times would be for you, I live in the UK and these following times I can be available for : Monday to Friday 5pm-10pm Sat to Sun 9am-5pm Also my exam board for physics is AQA.
mikess
21 March 2012
My speciality is Physics, which I can cover to A-level and undergraduate level. All of the topics you mention are no problem. At the moment most evenings are free, and 5pm to 6pm or thereabouts is generally most convenient. Tomorrow (22nd March) I have free at that time but I'm busy on Friday 23rd. Next week I have Wednesday (28th) booked but the rest of the week is free at the moment.
ianmoth
21 March 2012
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Mechanical Waves vs Electromagnetic Waves: What are the Differences?

There are many types of wave and although they all have things in common there are also behaviours and characteristics that can distinguish them from each other. For example, we could look at the direction of travel of the wave in relation to the movement of the particles of the medium they are travelling through which would allow us to categorise waves into 3 categories such as transverse waves, longitudinal waves, and surface waves. Or we could look at the waves ability or inability to transmit energy through a vacuum? This leads us to 2 notable categories of waves, mechanical and electromagnetic.

Mechanical vs Electromagnetic Waves

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