All 4 Uses

principle
in
Amusement Park Physics
(Auto-generated)

Sand was used to help slow down the sled at the end of the ride to keep it from crashing, a technique based on the principle of friction.†
Chpt 1 *

principle = basic rule or belief
But Newton was also responsible for laying down the fundamental laws of the physical universe: the principles that describe not only how things work but why.†
Chpt 4

principles = basic rules or beliefs
These principles are his laws of motion, and they built on the work of great scientific minds who came before him.†
Chpt 4
Building on the work of predecessors such as Galileo, Copernicus, and Kepler, he laid out the principles of his laws of motion, the universal theories that tied the work of these great minds together.†
Chpt 4

Definitions:

(1) (principle)
a basic rule or belief
The exact meaning of principle can depend upon its context. For example:
- "our guiding principles" -- basic moral beliefs that guide decisions and behavior
- "electromagnetic principles" -- rules describing how the world works
- "She lacks principles." -- lacks moral guidelines
- "We agree in principle." -- about important basic beliefs
(2) (meaning too rare to warrant focus)
See a comprehensive dictionary for more specialized senses including one in chemistry.