ROD CROSS HOME PAGE
A recent (2009) photo
evidence for murder (UNSW Press) NEW
BOOK (Oct 09)
Late Night
Live Interview ABC Radio
National 7 Oct 2009
University of Sydney Media Office Interview 23 Oct 2009
Channel 10 Movie
Clip (QuickTime) from ÒA Model DaughterÓ 4 Nov 2009
Public lecture
(1 hr) 19th Nov
2009 (Go to Archive and start at
AV1)
Technical Tennis by Rod Cross and Crawford Lindsey
Available from www.racquettech.com, amazon.com etc (only $11 for priceless
information!). Also available in
Spanish and Japanese.
Remember this:
ÒSex is good but tennis lasts longerÓ Freud, 1938.
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SPORTS PHYSICS MOVIE CLIPS
INDIVIDUAL SPORTS
PHYSICS OF BOUNCING
BALLS AND OTHER OBJECTS
MORE TENNIS
and FIVE WAYS TO WIN A POINT and TENNIS
STATISTICS
LISTEN TO A BELL (recorded at the same volume and
ball speed) hit with (a) a golf ball
or (b) a tennis ball
Why are the sounds so different?
ItÕs the same fundamental reason that some bats and racquets have bigger sweet
spots than others. The amount of vibration depends on the ratio of impact
duration to the vibration period. The bell might sound tinny if you use
internal speakers. Try it anyway as a test of the bass response of your
internal speakers. The fundamental frequency is 975 Hz. Internal speakers will
not respond at all to the f < 200Hz racquet sounds included on the tennis
page.
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FORENSIC
PHYSICS
Some
cases I have worked on with the NSW Police and Coroner ____________________________________________
PUBLICATIONS
(and TENNIS MAGAZINE
ARTICLES)
Brief CV
Born
1943. Lived in Berry, NSW until age 14 then moved
to Forbes. B.Sc. Dip. Ed at Sydney University. PhD in plasma physics in 1968.
From 1968 to 1996 I worked in the Plasma Physics Department at Sydney
University, specialising in Alfven wave studies in the TORTUS tokamak. I
retired in 2003 as an Honorary member of staff, to continue work on the physics
of sport and forensic physics.