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I couldn't figure out what was going on until I noticed the unit change in the first line compared to other lines."Marc "Zeke" Kossover" <zeke_kossover@yahoo.com> 2/19/2009 7:57 pm >>>
From: Brian Whatcott <betwys1@sbcglobal.net>
To: Forum for Physics Educators <phys-l@carnot.physics.buffalo.edu>
Sent: Thursday, February 19, 2009 5:20:58 PM
Subject: Re: [Phys-l] Figuring Physics in the March TPT The Physics Teacher
Bill Nettles wrote:
.....a distance of 500 LY. It was kind of fuzzy, not nearly as pretty as some Hubble
Bad Astronomy had a good picture of a planetary nebula that was 2 AU across at
pictures of other planetary nebula, but they were 4.3 LY across at 10000 LY
distance. but when you compare the angular sizes, the quality of the first
becomes dramatically impressive (13 milliarcseconds versus 1.5 arc-minutes).
I read this passage twice, and it means as much to me now as before I
read a word.
So this is how decrepitude begins? :-)
Brian W
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