APS News

January 2005 (Volume 14, Number 1)

The Twin Paradox, Redux

Einstein Einstein
Photo Credits: Jessica Clark
 


Two Einsteins mysteriously showed up at a December meeting of the National Science Teachers Association in Richmond, Virginia, to advertise the World Year of Physics. In the photo at left, one Einstein, dressed casually in 21st-century clothes, had aged normally. The other one, dressed in clothes more typical of the early 20th century, had been travelling close to the speed of light. Furthermore, due to the Lorentz contraction, he was as thin as a piece of cardboard.

In the photo at right, the modern-day Einstein (aka Marc Spiegel) explains the fine points of general relativity to Logan Lee of Savannah, Georgia and his father, Jason Lee.


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Editor: Alan Chodos
Associate Editor: Jennifer Ouellette

January 2005 (Volume 14, Number 1)

Table of Contents

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Articles in this Issue
Tampa To Host 2005 April Meeting
We Know, We Know… He's German
The Twin Paradox, Redux
APS Report Says Moon-Mars Initiative Jeopardizes Important Science Opportunitites
Joint Unit Neutrino Study Sets Research Priorities
Council Articulates Vision for APS
Cohen to Stress Outreach, Continuity in 2005
APS, AAPT and AIP Sponsor Students at WYP Kickoff Event
Plasma Window 'Force Field' Featured at 2004 DPP Meeting
APS California Section Holds Fall Meeting
AIP Reports Upturn in Number of Physics Graduate Students
Insect Flight, Modeling Blood Flow Highlight 2005 DFD Meeting
APS Seeks Endowment for Sakharov Prize
Fellows and Board Members Mix it Up
Einstein in the 21st Century
Letters
Inside The Beltway: A Washington Analysis
The Back Page
Members in the Media
This Month in Physics History