•
Spaces that obey the Euclidean rules of geometry are termed
flat
.
•
Zero curvature –
the Euclidean case where parallel lines stay parallel
•
Positive curvature –
exemplified by a sphere where parallel lines cross each
other
•
Negative curvature –
exemplified by a saddle where parallel lines stray away
from each other on an object rather than cross each other.
•
Geodesic –
the shortest distance path between two points. (straight line in
Euclidean space but NOT in a curved space)
•
Equivalence principle –
the premise that no experiment can distinguish between
gravity and acceleration in a small closed room
•
Inertia –
the tendency of an object to maintain an initial state of motion and resist
any attempt to change that state. (i.e. stopping a train going 100 mph)
•
Einstein’s theory of general relativity –
characterizes the effect of gravity in
terms of ordinary inertia, acting in a region of space that is curved due to the
presence of matter and energy.
This is the end of the preview.
Sign up
to
access the rest of the document.
 Winter '10
 BREGMAN
 Space, Black Holes, General Relativity, Black hole, electromagnetic waves

Click to edit the document details