The concept of gravity as a quantum force is challenged by the foundational principles of Einstein's general relativity, raising important questions about the existence and necessity of gravitons.
Gravitons, the theoretical particles that mediate gravitational force, are based on the assumption that gravity has a fundamentally quantum nature, which remains unproven.
Understanding the distinction between real and virtual particles is crucial; while real particles can be measured and observed, virtual particles govern interactions in quantum mechanics, complicating our view of forces.
Photon, as the first real quantum particle discovered, exemplifies how particles interact; it carries energy and can be absorbed or emitted by other particles, illuminating fundamental quantum processes.
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