| |
VK3ABK > TREK 08.02.04 07:09l 25 Lines 917 Bytes #999 (0) @ WW
BID : 14912_VK3KAY
Read: DB0FHN GUEST
Subj: Re: Re: KB2VXA Parsec.
Path: DB0FHN<DB0RGB<DB0MRW<OK0PPL<DB0RES<ON0AR<7M3TJZ<SP7MGD<ZL2TZE<VK3KAY
Sent: 040208/0432Z @:VK3KAY.#WEV.VIC.AUS.OC #:14912 [Wendouree] $:14912_VK3KAY
From: VK3ABK@VK3KAY.#WEV.VIC.AUS.OC
To : TREK@WW
Hello all 'Astros'.
In reply to a strange 'gestimate' of what is a Parsec, Rudolf PA2RHB has
sent the following. (in part)
"I think a parsec is a distance at which an object shows
a PARallax of one SECond of arc."
"1 Parsec = 1.53388225 * 10^14 furlongs (just to keep in style)"
Yes, I agree Rudolf, However I would add that instead of your horse race
connection, (not 'my' style, Rudolf!) one second of arc equates to a distance
of 3.2616 light years. This in turn is 206.265 Astronomical Units (AU) or
for a 'long distance horse race', 30.857 X 10^12 km. :-)
By the way, the symbol 'AU' designates 'Astronomical Unit'. The mean distance
between the Sun and Earth. Not Angstrom as stated in a previous bulletin.
Angstrom, (an out of favour unit) is written 'A' with a small 'o' above it.
Micron or Nanometre are better and more 'universal'.
73. Dick. VK3ABK
Read previous mail | Read next mail
| |
