The concept of photon mass has long been a subject of fascination and debate in the realm of physics. A recent study has prompted new questions and contemplation about the upper limit of photon mass. Could there be an uncharted boundary that restricts the mass of these fundamental particles? The pursuit of high-precision measurements is sparking curiosity and driving the exploration of this intriguing phenomenon. As researchers delve into these uncharted territories, the quest to unravel the mysteries of photon mass continues to unfold, prompting us to ponder the limits of our current understanding of the fundamental forces at play in the universe.

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source: Phys.org