Introduction to Electromagnetics Flashcards
Lesson 2
what are the 4 fundamental forces of nature?
- electromagnetic force
- strong force
- gravitational force
- weak force
what does strong force do?
it binds the nucleus
what does electromagnetic force do?
it binds the atom
what does weak force do?
it is responsible for radioactive decay
what does gravitational force do?
it binds the solar system
it is the subject that deals with the theory and applications of electric and magnetic fields.
electromagnetics
it is the physical interaction among electric charges, magnetic moments, and electromagnetic fields.
electromagnetism
when was the charge discovered
about 600BC by the ancient greeks
how was the charge discovered?
Ancient Greeks found out that by rubbing fur on various substances, such as amber, it would build up an electric charge imbalance.
from what word does the term electricity came from?
The word electricity derives from ηλεκτρον, the Greek word for
amber.
he is well known for his many quotations and his experiments with electricity
benjamin franklin
who invented alternating current?
nikola tesla
who invented direct current?
thomas edison
