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Mind your head
Author(s) -
Cook Adrian
Publication year - 2004
Publication title -
significance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.123
H-Index - 21
eISSN - 1740-9713
pISSN - 1740-9705
DOI - 10.1111/j.1740-9713.2004.00061.x
Subject(s) - head (geology) , subject (documents) , expanded polystyrene , polystyrene , aeronautics , forensic engineering , computer science , engineering , materials science , geology , composite material , library science , paleontology , polymer
Bicycle helmets are intended to reduce the risk of head injury to a cyclist. The modern style of helmet contains a thick layer of polystyrene designed to compress and absorb the energy of an impact; this is usually covered by a hard exterior. Helmets have been around for some 20 years but their effectiveness remains in question and, as Adrian Cook explains, is the subject of a heated debate.