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Pjpic
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If photons emit virtual gravitons (but gravitons don't emit virtual photons) why isn't gravity considered to be a more fundamental force?
Gravity is a fundamental force that acts between objects with mass, causing them to be attracted to each other. Electromagnetism is a force that acts between electrically charged particles, causing them to be either attracted or repelled from each other. While gravity affects objects with mass, electromagnetism affects particles with electric charge.
This is a debated topic in the scientific community. Some argue that gravity is more fundamental because it affects all objects with mass, while electromagnetism only affects particles with electric charge. Others argue that electromagnetism is more fundamental because it can be described by a unified theory (electroweak theory) while gravity cannot be fully explained by current theories.
Scientists have been working on a unified theory that would combine gravity and electromagnetism, known as the theory of everything. While there have been attempts to unify the two forces, a complete and widely accepted theory has not yet been achieved.
Electromagnetism is significantly stronger than gravity. For example, the electromagnetic force between two electrons is about 10^42 times stronger than the gravitational force between them. However, since gravity acts on larger scales (such as between planets and stars), it can have a more noticeable effect.
Einstein's theory of general relativity explains gravity as the curvature of spacetime caused by the presence of mass. In contrast, electromagnetism is described by quantum field theory, which does not involve the concept of spacetime. This difference in how the two forces are described is one reason why they have not yet been successfully unified into one theory.