Computerized Cavendish Balance

Computerized Cavendish Balance, 1003337 [U40205], Gravitation
Computerized Cavendish Balance, 1003337 [U40205], Gravitation
Computerized Cavendish Balance, 1003337 [U40205], Gravitation
Computerized Cavendish Balance, 1003337 [U40205], Gravitation
$ 2,299.00
More on the way
A Cavendish torsion balance demonstrates the force of gravity between two masses and allows the gravitational constant to be determined. Thanks to the short oscillation period of just 2–4 minutes, the gravitational constant can be determined within the space of a single lesson with an accuracy of better than 10%.
The core of the apparatus is a torsion pendulum made of a light bar with two small lead spheres, which is suspended horizontally from a thin wire. The apparatus is moved from its rest position by the attraction of the two spheres to two larger lead spheres. When the two large spheres are rotated to a new position, the torsion balance will vibrate about a new rest position. The rotary motion is measured using a capacitive differential sensor, which largely suppresses noise and vibration components in the signal. The output is then recorded using a computer. For subsequent evaluation, the data can be exported to a spreadsheet. Alternatively, the motion can be demonstrated with the aid of a light pointer.

Mass of large lead spheres: 1 kg
Mass of small lead spheres: 15 g
Gravitational attraction: < 10–9 N
Torsion wire: Tungsten, 25 µm
Period of oscillation: 2–4 mins
Angular resolution: 25 microradians
Sampling rate: 0.5, 1, 2, 5, 10 samples/s
Dimensions: 190 x 180 x 200 mm³
Weight: 5 kg

Includes:
1 Cavendish torsion balance
1 Measurement software
1 USB cable

Replacement Parts

 
$ 63.00
 
 
 

Used in following experiment

Item No.: 1003337 [U40205]
  • Secure online payment with SSL
  • Expert advice
  • Financing available
  • Easy returns & exchanges
  • International shipping available
Service hotline:
1-888-326-6335
Product Information
Weight 7.91 lb
add to cart

Customers who bought this item also bought these items:
Universal Clamp, 1002830 [U13255], Clamps
$ 31.00
by 3B Scientific
Function Generator FG 100 (230 V, 50/60 Hz), 1009957 [U8533600-230], Function Generators
$ 1,099.00
by 3B Scientific
Photo Gate, 1000563 [U11365], Sensors for Physics
$ 143.00
by 3B Scientific
Digital Multimeter P3340, 1002785 [U118091], Hand-held Digital Measuring Instruments
$ 65.00
by PeakTech
Stainless Steel Rod 470 mm, 1002934 [U15002], Rods
$ 16.00
by 3B Scientific
DC Power Supply 0-500 V (230 V, 50/60 Hz), 1003308 [U33000-230], Power Supplies
$ 802.00
by 3B Scientific
Vibration Generator, 1000701 [U56001], Oscillations
$ 235.00
by 3B Scientific
Digital Counter (230 V, 50/60 Hz), 1001033 [U8533341-230], Measurement of Time
$ 609.00
by 3B Scientific
Stirling Engine G, 1002594 [U10050], Cyclic Processes
$ 1,240.00
by 3B Scientific
HF Patch Cord, BNC/4 mm Plug, 1002748 [U11257], Experiment Leads and Cables
$ 45.00
by 3B Scientific
Red Laser Diode, 650 nm, 1003201 [U22000], Optical Lamps on Stem
$ 182.00
by 3B Scientific
Tungsten Wire, 1009718 [U40212], Gravitation
$ 63.00
Microwave Set 9.4 GHz (230 V, 50/60 Hz), 1009951 [U8493600-230], Wave Optics
$ 1,976.00
by 3B Scientific
Analogue Multimeter ESCOLA 100, 1013527 [U8557380], Hand-held Analog Measuring Instruments
$ 287.00
by 3B Scientific