User:DWHalliday

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en This user is a native speaker of English.
en-us This user can speak American English.
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This user has a keen interest in Physics.
Image:User mathematician-4.png This user is an expert mathematician.
\scriptstyle{ \delta_{ii} = 3} \,\; This user understands the summation convention.
This user enjoys thinking in Four Dimensions.
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This user enjoys reading science fiction.
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?met? This user prefers metric units and cannot figure out why Americans have such a hard time with them.
B Y U This user attends or attended Brigham Young University.
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en-us-n This user is a native speaker of American English.


Just to be clear, this user is not the textbook author David W. Halliday, though my name is David W. Halliday. (I believe the middle initial stands for a different name.)

I am a Ph.D. Theoretical Physicist, not that that means I'm an authority, or anything. :-)

DWHalliday (talk) 21:28, 23 March 2008 (UTC)