0 is a rational number. How do we have 0 of something? Â It is used to
define a quantity of something just like 1, 2, 3, etc.
Or, maybe we are gonna relieve the roaring 20's ð
Steve Ruttenberg PhotographerAmateur
Astronomerwww.steveruttenbergphotography.com843.518.1395
On Sat, Jan 4, 2020 at 7:19 AM -0700, "Padraig Houlahan" <pjhmx1@xxxxxxxxx>
wrote:
I think itâs possible to be too clever here. We donât teach children to
count on their fingers starting with 0 -1-2-3 etc. Also, the concept of zero
came long after that whole numbers.
P
Sent from my iPhone
On Jan 3, 2020, at 10:18 PM, Paul Lind wrote:--
Seriously guys, this is the beginning of the decade called THE TELESCOPE
TWENTIES.
Engineers like Dr. Mozdzen and Mr. Kozel know that numbering starts at ZERO
in mathematics, engineering, and telescope making, and the beginning of all
time. This is the start of the next decade, the "TELESCOPE TWENTIES". Some
liberal arts folks like musicians insist at counting time starting at "one"
and ending at "and ah". Putting the downbeat at 'one' never made sense to
me. Musicians also screw up the numbering of harmonics, using the term
"first harmonic" to describe TWICE the fundamental frequency. I forgive them
for that and like to dabble in music myself.
Paul
----- Original Message -----
From: Thomas Mozdzen
To: az-observing@xxxxxxxxxxxxx
Sent: Fri, 03 Jan 2020 15:02:37 -0500 (EST)
Subject: [AZ-Observing] Re: ATM/Astro-Imaging meeting is Tuesday
Try this
https://xkcd.com/2249/
[https://imgs.xkcd.com/comics/i_love_the_20s_2x.png]
xkcd: I Love the 20s
This work is licensed under a Creative Commons Attribution-NonCommercial 2.5
License. This means you're free to copy and share these comics (but not to
sell them). More details..
xkcd.com
________________________________
From: az-observing-bounce@xxxxxxxxxxxxx on behalf of KEVIN KOZEL
Sent: Friday, January 3, 2020 12:56 PM
To: az-observing@xxxxxxxxxxxxx ; Paul Lind ; sac-forum
Subject: [AZ-Observing] Re: ATM/Astro-Imaging meeting is Tuesday
Paul,
I must correct your statement that we are beginning a new decade. 2020 is the
tenth year of the current decade, not the start of a new one.
We begin our counting with the number One, not Zero, and each decade has ten
years, thus 2020 being the last year of the current decade.
2021 will be the beginning of the next decade. The same reasoning is used
with the new centuries. For example, the 1900's were the twentieth century
and we are now in the twenty first century.
I can't convince my wife of this no matter how hard I try, so I let her think
what she wants.
Kevin Kozel
On January 3, 2020 at 2:31 PM Paul Lind wrote:
Hi,
We'll have this decade's first Amateur Telescope Making and Astro-imaging
meeting on Tuesday, Jan 7 in my shop, starting at 6:30. I plan to set up the
Foucault tester, so bring a mirror you want tested. We'll also do some
drilling and tapping on the lathe on a part that Lynn needs for his "double
telescope mount". So, if you have any small machining projects, bring them
over Tuesday evening.
Paul Lind
210 W. Tierra Buena Lane
Phoenix, AZ 85023
cell: 602-350-6190
--
See message header for info on list archives or unsubscribing, and please
send personal replies to the author, not the list.
--
See message header for info on list archives or unsubscribing, and please
send personal replies to the author, not the list.
--
See message header for info on list archives or unsubscribing, and please
send personal replies to the author, not the list.
--
See message header for info on list archives or unsubscribing, and please
send personal replies to the author, not the list.