A brief overview of important propagation fundamentals when using Radios. Made by the Film Board of Canada for the Royal Canadian Air Force.

19 replies
  1. Randy P.
    Randy P. says:

    Gosh I love these old training and education films. My favorites are the
    Bell Science series. Thanks for posting this old relic!

    Reply
  2. Dragos Minea
    Dragos Minea says:

    Can someone explain why the E and H fields maximums are 90 out of phase of
    each other at the dipole in the near-field, but EM Waves have E and H peaks
    in phase as they radiate out in the far-field?

    Reply
  3. lyn arsBellica
    lyn arsBellica says:

    I thought electons don’t really flow, they just behave like dominoes. maybe
    this video was avoiding the “reflection” business of a circuit. Also, I
    know we learnt that the flow of current generates M field, but is it really
    the E that generates M or I that generates M? Or I and E are really
    irrelevant we go down deep into relativity territory. 

    Reply
  4. 世鹏胡
    世鹏胡 says:

    Great vedio, but i am a little puzzle about the amplitude of E plan and H
    plan, the 2 plan could not get the maximum value at the same time, there
    should be 90 degree phase difference, is this a typo?

    Reply

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