{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Lec-22 - Previous Lecture Mechanical waves satisfy the Wave...

This preview shows pages 1–16. Sign up to view the full content.

Previous Lecture Mechanical waves satisfy the Wave Equation 2 D ∂x 2 1 v 2 2 D ∂t 2 = 0 November 12, 2007 – p.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Today Energy transport in waves Maxwell’s Equations have wave-like solutions. – p.
Energy transport Mechanical waves transport energy from source to destination. – p.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Energy transport Mechanical waves transport energy from source to destination. Average power is P = 1 2 µA 2 ω 2 v – p.
Energy transport Mechanical waves transport energy from source to destination. Average power is P = 1 2 µA 2 ω 2 v Electromagnetic waves transport energy as well – p.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
EM waves How does an EM wave get started? An antenna “shakes” the electric field: – p.
EM Wave Propagation Near the antenna Far away B E At large distances, a small part of a spherical wave looks like a plane wave. – p.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Plane Wave The EM wave consists of both electric and magnetic fields: E = E 0 sin( kx ωt ) ˆ j B = B 0 sin( kx ωt ) ˆ k We will show these E and B waves satisfy Maxwell’s Equations.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 16

Lec-22 - Previous Lecture Mechanical waves satisfy the Wave...

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online