Science News Archive - December 01, 2003
By PATRICK CONDON DES MOINES, Iowa (AP) -- Doctors have used small cameras on snaking tubes for years to check patients' intestinal troubles.
Word of the Day
- A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.