class02 - Announcements Reading for Friday: TZD 1.7 1.8...

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

View Full Document Right Arrow Icon

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

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

Unformatted text preview: Announcements Reading for Friday: TZD 1.7 1.8 Homework #1 is posted; due at beginning of class on Friday next week. First midterm is on Tuesday, February 9, 7:30pm 9:15pm. Contact me immediately 7:30pm-9:15pm. Contact me immediately if you cannot make this date! Need special accommodations? See me! Office hours: Wed. 1pm 3pm. Gamow tower F-527. Upon request: a set of pre-lecture notes are available on the course web-page. Pre-class notes Replace these notes after each class with the actual lecture notes. These notes are not a substitute for the reading assignments! Today Galilean relativity (cont.) Inertial frames in classical physics. Motivation for special relativity Motivation for special relativity Strange things about Speed of light. Interferometers Light: the ultimate yardstick. Compare two reference frames (now in one-dimension only) ... 3 2 1 0 1 2 3 .. Frame S has origin here. x ... -3 -2 -1 0 1 2 3 ... ... -3 -2 -1 0 1 2 3 ... Frame S has origin here, at x=3m according to reference frame S. (The frame S is drawn below S so you can read both axes.) x Compare two reference frames (now in one-dimension only) ... 3 2 1 0 1 2 3 .. x ... -3 -2 -1 0 1 2 3 ... ... -3 -2 -1 0 1 2 3 ... Observer in S measures ball at x = 2m. Observer in S measures ball at x = -1m. x Important conclusion Q: Who is right? a) Observer in S b) Observer in S Observer in S finds the ball at x = 2 m Observer in S finds the ball at x = -1 m Q1 c) Both are right d) Neither is right Two observers in different reference frames can give a different description of the same physical fact (in this case, the location of the ball.) Reading Quiz (closed book, no discussions) An inertial reference frame is one: a) that is not moving b) that is not accelerating Q2 c) in which objects are a fixed distance apart d) in which observers are a fixed distance apart e) in which nothing is moving Inertial reference frames TZD 1.3 Inertial reference frames V Imagine a train car (its always a train!) moving on a straight track with constant velocity with respect to the...
View Full Document

Page1 / 6

class02 - Announcements Reading for Friday: TZD 1.7 1.8...

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

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