Physics
Dictionary
AMPLITUDE
The farthes distance of a vibrating particle from its equilibrium point.
CARTESIAN COORDINATE
One of pairs of coordinates giving the location of a point on a plane, relative to an origin and two perpendicular axes.
ELASTICITY
The ability of an object to return to the initial form immediately after the external force acting on it is removed.
EQUATOR
The imaginary great circle around the earth that is the sume distance from the north and south poles and divides the earth into the northern and southern hemispheres.
GRAVITATION
The mutual force of attraction between all particles or bodies that have mass.
GRAVITATIONAL FIELD
The region of space around an object that has mass, within which another object that has mass experiences the force of attraction.
ORBIT
The path that a celestial body such as a planet, the moon, or satellite follows around a larger celestial body such as the sun.
PARABOLIC MOTION
Motion which relates to the form of a parabola.
PARTICLE
A minute body that is considered to have finite mass but negligible size.
SATELLITE
A celestial body that orbits a larger one.
STRAIN
The ratio between object length increment and initial length.
STRESS
The force per area unit of material.
TANGENT
A line that touches another curve or surface but does not cross or intersect it.
VECTOR
A quantity that has direction and magnitude.
UNIT VECTOR
A vector that is one unit in length, especsially lying along a coordinate axis.
