Cavendish Torsion Balance - Automatic Gravitational Constant Measurement by 3B Scientific

★★★★★ 4.4 19 reviews

$90.00
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Product details

Management number 210902759 Release Date 2026/04/04 List Price $36.00 Model Number 210902759
Category

The Cavendish torsion balance showcases the gravitational force between two masses, enabling the calculation of the gravitational constant. With a swift oscillation period of 2-4 minutes, this constant can be accurately determined within a single lesson, surpassing a 10% precision.

  • Torsion Pendulum Core: A light bar with two small lead spheres, suspended horizontally from a thin wire
  • Initial Movement: Attraction between the two small spheres and two larger ones moves the apparatus from its rest position
  • New Position Vibration: Rotating the two large spheres causes the torsion balance to vibrate around a new rest position
  • Motion Measurement: A capacitive differential sensor measures the rotary motion, suppressing noise and vibration components
  • Data Recording: The output is recorded using a computer
  • Data Export: For evaluation, data can be exported to a spreadsheet
  • Motion Demonstration: Alternatively, the motion can be shown using a light pointer
Theme Physics
Brand Name 3B Scientific
Item Weight 5 Kilograms
Manufacturer 3B Scientific
Material Type Lead, Tungsten
Age Range Description Youth
Educational Objective Gravitational Force Measurement

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4.4 out of 5
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19 ratings | 8 reviews
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