Elecraft CW Net Announcement

Good Evening,

    I went for a hike this afternoon.  The mist was hanging in the air. 
It felt great to breath without smoke or ash in the air.  It has rained
off and on for the last two days.  East of Portland they received over 2
inches.  Hopefully that held true farther south.  I noticed a lot more
birds flying around.  They didn't like the smoke either.  Plants and
trees look a month older than normal.  They don't like breathing carbon
monoxide.

    It has been a month since the sun had a spot.  The word is cycle 25
has begun.  I wish it would show a more spirited entry. I spent the week
writing some graphics code for a 3D engine.  Each trigonometric function
requires a conversion factor.  Really, who thinks in radians?  "I'll cut
this board at an angle of PI/4 +/- 2 deciradians."  I'll stick with 360
degrees instead.  If it was good enough for the Babylonians it's good
enough for us.  Fie on radian measure.

Please join us on (or near):

14050 kHz at 2200z Sunday (3 PM PDT Sunday)
  7047 kHz at 0045z Monday (5:45 PM PDT Sunday)

    73,
       Kevin. KD5ONS


_

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[k6dgw]

You didn't have to use gradians too?  Smoke has cleared here in NW NV
for the last two or so days, SW winds will likely bring it back tomorrow.

73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 9/19/2020 9:22 PM, kevinr wrote:
> I spent the week writing some graphics code for a 3D engine.  Each
> trigonometric function requires a conversion factor.  Really, who
> thinks in radians?  "I'll cut this board at an angle of PI/4 +/- 2
> deciradians."  I'll stick with 360 degrees instead.  If it was good
> enough for the Babylonians it's good enough for us.  Fie on radian
> measure.

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]

[Rich NE1EE]

Actually, I use radians all the time. Probably one of the least recognized, but common, uses is in firearm scopes. My Falcon Optics M18+ 4-18-44 is mil/mil. WAY easier to scale than MOA. I have been metric for decades. Went that way in the 70s, and never looked back. Had to go to Canada to get my first metric tape so that my ham measurements were easier. I use metric in everything...including the table that I made.
https://drive.google.com/file/d/1-kXMx8i1qiBQSUYgWUzdP9isucuOCopv/view?usp=sharing
Not only are the measurements metric, but the table has nearly 100 unique angles. All my woodworking buddies said that it was not possible to make a table this accurately. Picture attached, because it's hard to describe. I use decimal angles for those. Yep. You can really cut an angle of 10.3 degrees on a table saw. I'd have been just as happy w radians (remember those mils), but couldn't find a miter in radians. I use degrees because I am comfortable with them, but the same goes for radians. Fer us hams, 2 pi rads/s is 1 Hz. Grads have their place, but I don't see them catching on. Geometrically, degrees make sense, as do radians, but grads, to me, grads have more "people intuition" sense...just not popular. Ya gotta admit that grads are easier than adding and subtracting from 360 if you're on a hike. At that, radians would also be easy, as long as you don't mind 2pi ;-) Finding a reverse course, pretty easy; right angles, not so much ;-)

On 2020-09-20 11:25:-0700, Fred Jensen wrote:
>You didn't have to use gradians too?�  Smoke has cleared here in NW NV for the last two or so days, SW winds will likely bring it back tomorrow.
>73,
>Fred ["Skip"] K6DGW
>
>On 9/19/2020 9:22 PM, kevinr wrote:
>>I spent the week writing some graphics code for a 3D engine.�  Each trigonometric function requires a conversion factor.�  Really, who thinks in radians?�  "I'll cut this board at an angle of PI/4 +/- 2 deciradians."�  I'll stick with 360 degrees instead.�  If it was good enough for the Babylonians it's good enough for us.�  Fie on radian measure.


~R~
72/73 de Rich NE1EE
On the banks of the Piscataqua


______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]