Lecture25 - Chapter 23 Classical Theory of Electromagnetic Radiation Maxwell's Equations Four equations Gauss's law for electricity Gauss's law for

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 23 Classical Theory of Electromagnetic Radiation
Background image of page 1

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

View Full DocumentRight Arrow Icon
Four equations: Gauss’s law for electricity Gauss’s law for magnetism Faraday’s law Ampere’s law for magnetism ! " = # path inside I l d B _ 0 μ ! ! ! " = # 0 ˆ $ inside q dA n E ! ! B ! ˆ ndA " " = 0 ! E ! d ! l " " = # d dt ! B ! ˆ ndA " $ % (incomplete) Maxwell’s Equations
Background image of page 2
No current inside 0 = ! " l d B ! ! Current inside I l d B 0 μ = ! " ! ! r I B 2 4 0 ! = I r r I l d B 0 0 2 2 4 = = " # ! ! ! " = # path inside I l d B _ 0 ! ! Ampere’s Law
Background image of page 3

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

View Full DocumentRight Arrow Icon
Time varying magnetic field leads to curly electric field. Time varying electric field leads to curly magnetic field? ! " = # dA n E elec ˆ ! 0 0 0 cos ! Q A A Q elec = ° " " # $ % % = ( dt dQ dt d elec 0 1 = " I 0 1 = I dt d I elec ! = 0 " ‘equivalent’ current ! " = # path inside I l d B _ 0 μ ! ! combine with current in Ampere’s law Maxwell’s Approach
Background image of page 4
" # $ % + = ( ) * dt d I l d B elec path inside 0 _ 0 + μ ! ! Works!
Background image of page 5

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

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/02/2008 for the course PHYS 272 taught by Professor K during the Winter '07 term at Purdue University-West Lafayette.

Page1 / 12

Lecture25 - Chapter 23 Classical Theory of Electromagnetic Radiation Maxwell's Equations Four equations Gauss's law for electricity Gauss's law for

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online