2019 Good Quality Magnifying Glass - Gravitational Constant Instrument for teaching – Lianying
2019 Good Quality Magnifying Glass - Gravitational Constant Instrument for teaching – Lianying Detail:
Overview
Quick Details
- Place of Origin:
-
Zhejiang, China
- Brand Name:
-
Lianying
- Model Number:
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J2158
- Product name:
-
Gravitational Constant Instrument for teaching
- Material:
-
Metal
- Color:
-
Grey
- Usage:
-
Teaching
- Feature:
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Durable
- Condition:
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New
- Subject:
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Physics
- Warranty:
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1 Year
- End User:
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Senior school
- Certificate:
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CE/ISO9001
Product Description
J2158
Gravitational Constant Instrument for teaching
1. General
The Instrument is of a small sized experimental instrument
based on Cavendish torsion balance which is used to test and
verify the constant of universal gravitation. The Instrument can
be used to observe qualitatively the phenomenon of universal
gravitation between objects, to measure quantitatively the
constant G and to prove F∝1/r2. The Instrument can be used in experiment for students due to its apparent demonstrational
effect.
2. Specifications
2.1 Mass of lead balls
2.1.1 Large lead balls:1.5kg each,deviation between the two balls not more than 0.002kg.
2.1.2 Small lead balls:0.02kg each,deviation between the two balls not more than 0.0005kg.
2.2 Arm length of torsion balance: d=5.0×10-2m.
2.3 Filament of torsion balance:Made from Beryllium bronze with a period of freely torsion oscillating cycle T=5.0×10-2s, length L=150mm, section area S=0.145×0.008mm2.
2.4 Damping type: Oil
2.5 The error of measuring gravitational constant G: less
than 15%
2.6 Operation condition
2.6.1 Ambient temperature: +10°C~+40°C.
2.6.2 Relative humidity: 50~90%RH.
2.6.3 Working surrounding: vibration-isolated bench, no direct
and heat radiation,
no interference from magnetic and electrostatic fields.
2.7 Dimensions (l×b×h): 300mm×300mm×420mm.
2.8 Weight: about 12kg.
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By Kevin Ellyson from Ghana - 2017.09.09 10:18
It can be said that this is a best producer we encountered in China in this industry, we feel lucky to work with so excellent manufacturer.
By Isabel from South Korea - 2017.08.18 18:38
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