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Gravitational Balance


Simple, But Amazingly Sensitive - Measure One of the Universe's Fundamental Constants!

This innovative apparatus, developed from the traditional Cavendish pattern, is substantially less expensive than earlier models, making the measurement of the tiny but highly significant Gravitational Constant more accessible to students. It is precisely constructed and allows measurements of G to be made to better than 15% relative error using either initial acceleration method or the equilibrium displacement method derives G from the change in the equilibrium position of the balance at rest due to the change in position of the large masses. The builit-in oil damping system greatly reduces the time needed for equilibrium form the 2 hours needed by an undamped system.


   
 

ORDER

Item # Description Unit Availability Price Quantity
160722 Gravitational Balance Apparatus
Each Retrieving
470158-410 Replacement Filament
Pack of 5 Retrieving

ACCESSORIES

Item # Description Measurement Range Model Capacity Linearity Pan Size Precision Readability Unit Availability Price Quantity
470111-384 Extra Bright Laser Pointer, Wavelength: 635 nm , 5 mW (Class IIIA U.S. CDRH)
- - - - - - - Each Retrieving
156241 - CS2000 2000 g ±1 g - 133 mm 1 g 1.0 g Each Retrieving

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