- #1
Majed Alhemyani
Hi world
Exploring the Weight of Light: Does it Have Mass?
- Thread starter Majed Alhemyani
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In summary, the concept of whether light has mass has been a topic of scientific debate for centuries. While light has energy and momentum, it does not have mass in the traditional sense. However, recent research suggests that light may interact with particles in a way that gives it an effective mass, but this is still a controversial and ongoing area of study. Overall, the weight of light remains a complex and fascinating subject in the field of physics.
- #2
DaveE
Science Advisor
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No, there is no rest mass (photons don't rest!). Although it does have momentum and energy. Or maybe that's momentum or energy; Einstein said they are related E2 = m2⋅c4 + p2⋅c2. For light, m = 0. For rest mass, momentum p = 0.Majed Alhemyani said:
- #3
berkeman
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Welcome to the PF, Majed! 