documentation:
          expt. doc.

    Links:

• Cavendish expt. (Penn State U.)
• The Michell-Cavendish experiment (Laurent Hodges, Iowa State U.)
• The Cavendish Experiment (U. Toronto)
• Gravitational constant
• Cavnedish Experiment (U. Southern Cal.)
• Cavendish experiment
• Cavendish experiment apparatus
• Cavendish experiment
• Cavendish Experiment
• Cavendish experiment description (MIT)