How many particles in the Universe? - Numberphile
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So, Brady, we're gonna talk about how many particles there are in the universe. We're gonna calculate the number of particles in the observable universe. So that's, you know, the section of the universe that we can see, where light could have reached us from. What are the particles that we're talking about here? So we're gonna be interested in particles that's, that are particles that we know exist, that are fundamental, and we're interested in the ones that have mass. So, we're not really talking about photons, for example. What we're gonna be talking about are things like quarks, electrons, those sorts of things. So the quarks, of course, are gonna live inside protons, neutrons, and the electrons are gonna be in orbit around those, those pro...
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So, Brady, we're gonna talk about how many particles there are in the universe. We're gonna calculate the number of particles in the observable universe. So that's, you know, the section of the universe that we can see, where light could have reached us from. What are the particles that we're talking about here? So we're gonna be interested in particles that's, that are particles that we know exist, that are fundamental, and we're interested in the ones that have mass. So, we're not really talking about photons, for example. What we're gonna be talking about are things like quarks, electrons, those sorts of things. So the quarks, of course, are gonna live inside protons, neutrons, and the electrons are gonna be in orbit around those, those pro...
