# l14p - ISP209s8 Lecture 14-1 Today • Announcements –...

This preview shows pages 1–3. Sign up to view the full content.

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.

Unformatted text preview: ISP209s8 Lecture 14-1- Today • Announcements: – HW#7 is due after Spring Break on Wednesday March 12 th – Exam #2 is on Thursday after Spring Break – The fourth extra credit project will be a “super bonus” points project. This extra credit can let your homework score go over 100% • Light • Wave-particle duality of nature • Quantum Mechanics ISP209s8 Lecture 14-2- The Electromagnetic Spectrum • Maxwell’s 4 equations describe the unity of electric and magnetic forces. • They predict an electromagnetic wave that travels at the speed of c (3.00E+8 m/s) ISP209s8 Lecture 14-3- Wavelength and Frequency λ = 1.0 m Wavelength Frequency = 1/period Distance over which the wave repeats Number of cycles (repeats) per second. period = 2.0 s ISP209s8 Lecture 14-4- The Electromagnetic Spectrum Prentice-Hall 2005 Speed = λ f λ – wavelength f – Frequency, Hz (1/period)(1/s) For light Speed c = 3.0E+8m/s ISP209s8 Lecture 14-5- What is Light? • Wave Picture – oscillating electric and magnetic fields • Waves can interfere • Examples – 2-slit interference – diffraction 2-slit interference diffraction ISP209s8 Lecture 14-6- Light as a particle • Light also behaves like a particle • Light comes in small bundles of energy we call photons • Energy (of a photon) = h f h = 6.625E-34 Js = 4.136E-15 eVs= 4....
View Full Document

## This note was uploaded on 07/25/2008 for the course ISP 209 taught by Professor Sherrill during the Spring '07 term at Michigan State University.

### Page1 / 5

l14p - ISP209s8 Lecture 14-1 Today • Announcements –...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online