Show rubber Is I 1 not eite rubber is ig one of the most inelastic of substances points out time the newsmagazine News magazine the extensibility of rubber la Is usually confused with its elasticity an absolutely elastic substance Is one which returns to its original size and shape after stretching rubber does not do that pull a piece of rubber release it measure it it Is deformed old rubbers are bigger than new ones steel is far more elastic than rubber but of course much less stretchable glass Is probably more elastic than steel quartz Is an almost perfect elastic hence its use in nice measuring instruments such as an telescopes |