George Dana Boardman (the younger) (1828-1903).
American Christian Theologian.

List of questions and answers:

1. "If iron shavings are placed in the N-pole end of a solenoid, what happens to them?" Answer

2. "Please explain the clockwise motion and counter-clockwise motion for positive and negative flux." Answer

3. "Any idea how an electric brake works on a circular saw? When you let go of the trigger, the blade (or electric motor) instantly stops instead of slowing down gradually like a regular saw without an electric brake." Answer

4. "Can you explain the properties of Lenz's law and how it affects flux?" Answer

5. Two questions:
   • "Can you briefly explain the alternator, coil, battery circuit in a car?"
   • "Why is it possible to remove the battery terminals on a car that is running and keep it running?" Answers

6. "Does a back emf produce a heating effect?" Answer

7. "What do AM and FM stand for? How come in old radios it's easier to tune AM frequencies than FM ones? What do new radios have that old ones don't" Answer

8. "Would you explain how CB (citizens band) radios and VHF radios work? What kind of waves are they?" Answer

9. "How does a plasma produce light?" Answer

10. "Why should one never look into the light produced by an arc-welder?" Answer

11. "Assume you are standing on a boat on the ocean with no visible land mass except the horizon. If you rotate through 360^o degrees the Earth appears flat and round. Now, from your position on the boat to the horizon it appears that the distance could be seen as a radius of the circular shape of the Earth. Is this an illusion? What if the Earth was a cube, would it appear flat and square?" Answer

12. "We have been talking about conductors and insulators. What is a semi-conductor? Where does the word 'semi' come from? They use silicon, a semi-conductor, in microchips; if there is conductive material in silicon why don't electrons migrate over the silicon?" Answer

13. "Is it true, in your opinion, that when we approach the speed of light that our mass approaches infinity?" Answer

14. "Why does my brother (older) always tells me not to bring magnets near a computer? It is because of the concept of eddy currents?" Answer

15. "In class, you showed us that if you put another polarizer between two sheets of polarizer which are at 90^o to each other, light is transmitted. You had the angle between the first and second polarizer as 45^o. Does it work at other angles?" Answer

16. "How does a gun silencer work?" Answer

17. "Does it matter which way round you connect a capacitor? I've seen some capacitors with a positive sign at one end and a negative sign at the other. What does that mean?" Answer