 |
|
|
|
|
|
|
|
|
|
|
|
|
|
| • |
charged
particles (electrons, protons) and carry
|
|
|
electric
field, strength of field 1/d2
|
|
| • |
collision
or heating particle vibration change in
|
|
|
field change
in electrical forces on other particles
|
| • |
change
in electrical forces information about
|
|
|
original
particle
|
|
information transmitted through
a disturbance
|
|
|
(change in electrical field)
|
|
| • |
magnetic
field associated with electrical field
|
|
electromagnetic waves
|
|
Electromagnetic waves from moving charged particles
|
|
in astronomical objects
|
|
| • |
propagate
at speed of light, c (need not be visible)
|
|
