The science of tennis rackets can be traced to the 1970s when wooden
frame were replaced with metal. From that date a range of materials
have been used, with Graphite making the biggest impact. The impact
of metal frames has meant the speed and power of tennis shots has
increased massively, with the fastest serve now recorded at 148mph.
Metal frames also meant the heads of the rackets increased in size
and the strings can absorb more energy. The only downside some feel
is that fast courts such as Wimbledon have all become about a fast
serve and little else. This has resulted in Wimbledon lowering the
pressure of the balls, and trying to slow down the courts to make
the games more interesting. And also to give base court players
a chance of winning.
The best rackets available to buy are still made from graphite,
and usually cost £70 upwards. The lengths are about 67.5cm,
with a weight of about 310g.