Lect04_[Compatibility_Mode]

# Lect04_[Compatibility_Mode] - Physics 344 Foundations of...

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Physics 344 Foundations of 21 st Century Physics: Relativity, Quantum Mechanics and heir Applications Their Applications Instructor: Dr. Mark Haugan Office: PHYS 282 [email protected] TA: Dan Hartzler Office: PHYS 7 [email protected] Grader: Shuo Liu Office: PHYS 283 [email protected] Office Hours: If you have questions, just email us to make an ppointment e enjoy talking about physics! appointment. We enjoy talking about physics! Notices: Assigned reading so far - Chapters 1 & 2 of the text. Homework 1 due Thursday at the beginning of recitation. First help session Tuesday in PHYS 160 from 1:30 to 3:30.

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Question 1. Imagine that you receive a message from a space station 13 light-years from Earth. The message is dated August 30, 2127. What year does your calendar show when the message arrives if your calendar and clock are synchronized with those on the space station? ) 2127 A) 2127 B) 2114 C) 2140 D) None of the above
t sec Question 2 Here is a spacetime diagram depicting the world line of a particle moving through your inertial oordinate system coordinate system. During the time interval depicted, does the particle, A) speed up? B) slow down? C) change direction? ) none of the above? x light-seconds D) none of the above?

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Clock Synchronization and Simultaneity The process of synchronizing clocks is an essential part of setting up a system of rulers and clocks that define an inertial coordinate system. ast time we discussed how to do this if we know the speed of light in our Last time, we discussed how to do this if we know the speed of light in our coordinate system. Today, we examine an alternative synchronization procedure in a way that will eventually help you to understand how the counterintuitive consequences of Einstein’s special relativity can and must be correct. Synchronization by Clock Transport Near the beginning of section R1.6 the text says that Newton and “everyone knew … that time is absolute and flows equably without regard to anything external”.
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Lect04_[Compatibility_Mode] - Physics 344 Foundations of...

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