Questions
on Electromagnetic Waves
- What is an action-at-a-distance force?
How is it different from typical forces we deal with in our daily lives?
- Aside from the electric and magnetic
forces, name another action-at-a-distance force.
- What is a field? In what way is it
a better model to use than the action-at-a-distance force?
- How is the concept of field different
from concept of "aura"?
- In an electromagnetic wave what is
it that travels? How fast does it travel?
- What if electromagnetic waves traveled
instantaneously? How would that affect our lives?
- When the spaceship Enterprise fires
on and blows up its enemy's ship does anyone hear the explosion? Do the
people on the Enterprise see the explosion?
- What is a photon? What determines
its frequency, its speed?
- What is the significance of the amplitude
of an electromagnetic wave? What does it signify in the photon picture?
- What is a Gamma-ray? What generates
gamma-rays?
- How are X-rays generated? Name some
of the practical uses of X-rays.
- What is the typical wavelength of:
radio waves, microwaves, and visible light.
Last Modified Thursday, 04-Sep-200