This preview shows page 1. Sign up to view the full content.
Unformatted text preview: o Does light travel instantaneously? Water moves more slowly - you can watch them Sound waves are faster, but still not instant - thunder and lightning o Galileo and Newton both wanted to know this Romer found the answer from the moons of Jupiter Eclipses of moons are early when Jupiter is close and late when it is far away Romer measured about 186,000 miles/second - still very fast Modern experiments give 299,792,458 m/s You can assume 3.0 x 10^8 m/s for this course 6. The Spectrum of "Light" o Electromagnetic spectrum 7. Kirchhoff's Laws o Law 1 Hot opaque body (including gas) produces continuous spectrum o Law 2 Hot transparent gas produces emission lines spectrum...
View Full Document
- Spring '08