Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
..."morph" this into a single simpler device...... suppose we build a machine that contains a pair of sailboats
with sliding connection to a long rod......
William J. Beaty
How close to the wind can a boat sail?...