Sit. Rep. #96: Feed Line and Feynman

Knowledge Transfer:

1 – Usually there is a “someone” behind the “why” of things.  Let me introduce Dr. Richard Feynman.  He was a co-winner of the Nobel Prize in Physics in 1965.  (He shared the prize with Julian Schwinger and Sin-Itiro Tomonaga for their work in quantum electrodynamics.)

He worked on the Manhattan Project at both Los Alamos and at Oak Ridge National Laboratories.  He was also was a key member of the Space Shuttle Challenger Accident Investigation Team.  There is a lot more to this brilliant person but how does he relate to us in Scouts?

He was also a teacher. A lecturer. A student advisor.  Dr. Feynman suggested that there are only two dimensions of learning:  The first is to simply know the words.  Sometimes by rote memorization just to pass a test or appear knowledgeable.

The Second Technique is to be able to teach someone else and convey the knowledge.  So he developed the Feynman Technique of learning.

There are four steps to The Feynman Technique:

  1. Choose a Concept
  2. Teach it to someone
  3. Identify Gaps or Weaknesses
  4. Review

Now the parallel in Scouting.  Explain, Demonstrate, Guide, Enable.  The EDGE Method seems to me to come from this Nobel Prize Laureate.

2- EDGE Method:

  1. Explain – means being prepared to teach. Know the subject that you are presenting.  Present the problem that the technique and subject will solve.  Do not just tie a Square Knot.  Explain the problem what problem the Square Knot will solve and how to use it in simple language.  Cover the safety aspects and when use and not use that given process.
  2. Demonstrate – Visually, Verbally, Written instructions or notes. Review your own work.  Find & work to plug your gaps in your own knowledge.
  3. Guide – Let the student/s tackle the problem & technique.  Coach to improve the technique.  Get feedback from the student.  What is the depth of your knowledge?
  4. Enable – Review the student’s technique.  Repeat as necessary until the student has mastered the knowledge and technique.  Approve the student’s knowledge of the skill & subject.

You should leave the student open-minded, curious, doubting, and hungry for more knowledge.  Explore like a scientist.  Push back the dark edge of your personal knowledge with exploration.

3- Overview:

Language, first verbal, and then written, and now digital, was invented and has evolved to share knowledge.  That way information and knowledge would not die when a given individual died.  I also put school in that same category of shared knowledge.  The full cycle of teaching is that the student becomes the teacher for the next generation of students.

I believe that skills and knowledge augment the student throughout the universe of their life.  I once quoted the Scout Law in a college class.

You as the person presenting EDGE raise the self-assuredness level of that student. You also touch that student’s students.  The ripples of your teaching go on for a long, long time that you will never see the end of.

Teach well, my Scout friend. Teach well!

A: What do you call cattle with a sense of humor?
B: The laughing stock.

Ham Radio:

4- Feed Line is the cable or wire that connects the radio to the antenna.  Re-58 and Re-8 are two types of coaxial cable often used in amateur radio stations. Both have an impedance of 50 ohms.  Coaxial cable does, however, have some disadvantages. One of them is that it will have higher losses at high frequencies.

In general, what happens as the frequency of a signal passing through a coaxial cable is increased?
     The loss increases
What is the electrical difference between Re-58 and Re-8 coaxial cable?
     RG-8 cable has less loss at a given frequency

C: What happens to musicians when they die?
D: They de-compose.

Semper Paratus,

Thanks to KB6NU Ham Radio Study Guides

Campsite Cooking by Thomas Mercaldo

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