What is the reason that the Gravitational Constant (G) varies?

In summary, the conversation discusses the potential variability of the gravitational constant, with one article suggesting that most laboratory measurements are consistent within experimental error limits. The difference between recent high and low values is significantly larger than the estimated errors. The conversation also mentions a source, Rupert Sheldrake, who is not considered a credible source in the field of physics.
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rajen0201
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TL;DR Summary
As the methods of measurement became more precise, the disparity in measurements of G by different laboratories increased, rather than decreased.
If G really not a constant then what are the implications in science?
 
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Between 1973 and 2010, the lowest average value of G was 6.6659, and the highest 6.734, a 1.1 percent difference. The difference between recent high and low values is more than 40 times greater than the estimated errors.
what is the reason we don't believe it is variable?

[Moderator: Please do not use all bold.]
 
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  • #4
On PF, we don't make statements like that without citing the source.

What is your source that says this variation?
 
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  • #5
anorlunda said:
On PF, we don't make statements like that without citing the source.

What is your source that says this variation?
 
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Rupert Sheldrake should not be taken seriously, especially not in the field of physics.
 
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Since this whole thread is about non-science, thread closed.
 
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1. What is the Gravitational Constant (G)?

The Gravitational Constant (G) is a physical constant that appears in the equation for Newton's Law of Universal Gravitation. It represents the strength of the gravitational force between two objects.

2. Why does the Gravitational Constant (G) vary?

The Gravitational Constant (G) is believed to be a fundamental constant of nature, meaning it does not vary. However, there are some theories that suggest it may vary in extreme conditions, such as near black holes or during the early stages of the universe.

3. How is the Gravitational Constant (G) measured?

The Gravitational Constant (G) is typically measured using a device called a torsion balance. This device measures the gravitational force between two masses and can be used to calculate the value of G.

4. What is the current accepted value for the Gravitational Constant (G)?

The current accepted value for the Gravitational Constant (G) is 6.67430 x 10^-11 m^3 kg^-1 s^-2. This value was determined by the CODATA (Committee on Data for Science and Technology) in 2018.

5. How does the Gravitational Constant (G) affect our daily lives?

The Gravitational Constant (G) plays a crucial role in our daily lives by governing the force of gravity between objects. It is responsible for keeping us grounded on Earth, and also plays a role in the motion of planets and other celestial bodies in our solar system.

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