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Bibliography
Bibliography
1
Stringer, John.
The Sc
ience of
Gr
avity.
2000,
p. 4, 30.
2
Tiner, John.
Gravity.
2003,
p. 9, 10, 29.
3
Gravitation.
http://en.wikipedia.org/wiki/Gravitation
4
Motz, Lloyd; Weaver, Jefferson.
The Story of Physics.
1989
,
p. 25, 40-42, 71, 266.
5
Hetherington, Norriss.
Planetary Motions: A Historical Perspective.
2006
,
p. 154, 194.
6
Knight, Randall.
Physics for Scientists and Engineers: A Strategic Approach. 3rd Ed.
2013
,
p. 355, 357.
7
Strathern, Paul.
Newton and Gravity.
1997
,
p. 13, 51, 98.
8
Adler, Robert.
Science Firsts.
2002
,
p. 134.
9
http://www.nasa.gov/centers/glenn/about/grcfaq.html#antigrav
and http://www.nasa.gov/centers/glenn/shuttlestation/station/microgex.html
10
http://nssdc.gsfc.nasa.gov/planetary/factsheet/planet_table_ratio.html
11
Gondhalekar, Prabhaker.
The Grip of Gravity.
2001
,
p. 192 - 193.