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Henry Cavendish. 1731-1810. Notable scientific studies. Hydrogen or “inflammable air” D ensity of the Earth E lectricity The “Cavendish Experiment”. THE CAVENDISH EXPERIMENT. Measured the force of gravity between masses. THE CAVENDISH EXPERIMENT. - PowerPoint PPT Presentation
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Henry Cavendish
• 1731-1810
Notable scientific studies
• Hydrogen or “inflammable air”• Density of the Earth• Electricity• The “Cavendish Experiment”
THE CAVENDISH EXPERIMENT
• Measured the force of gravity between masses
THE CAVENDISH EXPERIMENT• The gravitational attraction
between the big and little balls caused the arm to rotate
• Stopped when the torque of the twisting wire balanced the force of attraction
• By measuring the angle of the rod and knowing the torque for the wire he was able to determine the force between the pairs
• 6ft wooden rod, wire, 2 small and 2 big lead spheres
Cavendish and G
• Goal of experiment was to determine the density of Earth
• During late 1800s, scientists used his results to determine G
• His results gave a G within 1% of the currently accepted value