Wind direction and diodes

Discussion in 'General Electronics Chat' started by KL7AJ, Jul 15, 2009.

  1. KL7AJ

    Thread Starter AAC Fanatic!

    Nov 4, 2008
    2,040
    287
    Well, we all know why we draw diodes with the arrow going AGAINST the flow of electrons....but do you know why we specify WIND direction as the directon it comes from, instead of where it's blowing?

    Hint: It's super scientific! :D


    http://en.wikipedia.org/wiki/Anemoi
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    That is the way the wind vane points, so sailors can distinguish true and apparent wind directions. This is handy when sailing, determining offset for gunnery fire control. and doing aircraft operations.
     
  3. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    144
    What's interesting about that article is the insignificance of the East wind comparative to the North, South and West winds:

    Now I wonder if there is a logical/practical reason for this?

    Dave
     
  4. KL7AJ

    Thread Starter AAC Fanatic!

    Nov 4, 2008
    2,040
    287

    I suppose since the Greeks only had three seasons, they had to throw out one of the gods. :D

    Eric the Viking
     
  5. KL7AJ

    Thread Starter AAC Fanatic!

    Nov 4, 2008
    2,040
    287
    By the way, in Fairbanks, we have four distinct seasons: Early winter, Mid-winter, Late winter, and Next winter. :D
     
  6. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,536
    Didn't you forget Winter Melt? Or is that Winter Slush?
     
  7. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    I think because the first wind vane pointed to the opposite direction due to its dynamic response.
     
Loading...