structure, they are also very rigid. However this does not
mean that they are fragile. On the contrary, they are
so rigid that if you take
the same amounts of
bone and steel, they
are 5 times stronger
than steel. The
thighbones in our
legs, for example, have
such an enormous capacity
that they can lift a one ton load
while standing upright. When
you hop or jump from side to
side, this bone is put
under a weight corre-
sponding to 3-4
times your body
w e i g h t .
P r ope r t i es o f Bones
71
This lattice
structure,
which explains
the strength of
bones, is also ap-
plied in constructing
strong buildings. The
inner structure of bones
served as a model for the
construction of many well-
known buildings. The Eiffel
Tower is one of them.