Comments by "Lepi Doptera" (@lepidoptera9337) on "Lecture 1 | New Revolutions in Particle Physics: Basic Concepts" video.

  1. Because the universe is homogeneous. See Noether's Theorem.
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  2.  @waynelast1685  You can't look up Noether's Theorem on the internet or in the library? That's very intellectually lazy of you. :-)
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  3.  @waynelast1685  So you know or you don't recall? You sound like you are on drugs, right now. :-)
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  4. A photon is a little bit of energy. Asking for its size is like asking "How big is a kWh?". If the latter doesn't make sense to you (and I hope that it doesn't), then asking for the size of a photon does not make sense, either.
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  5.  @waynelast1685  A visible photon is a few eV in energy. So, if that energy has a size, then how big is a kWh? :-)
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  6.  @waynelast1685  I know exactly what you are thinking. :-)
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  7.  @waynelast1685  I wasn't wasting your time. I made it pretty clear that I think that you are nothing but a poorly performing troll, didn't I? :-)
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  8.  @waynelast1685 See my first post. :-)
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  9.  @waynelast1685  I don't like people on drugs. That's pretty much mainstream. :-)
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  10. He is a theoretical physicist. To him c=1, which is the rational choice. The speed of light is not a meaningful physical constant.
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  11. Many people struggle with subtle concepts. I remember some kids in my high school physics classes who were absolutely out of touch with the material. They weren't even the least performing kids. Some were quite artistic. Some, of course, become obsessed with "proving physics wrong".
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  12.  @davidhand9721  Yes, then there are the folks who want to prove Einstein wrong... Coming back to school, I remember one girl nearly started crying because she couldn't understand harmonic motion. It was one of the few times that I thought that we are teaching high school poorly. Or maybe there really are such large differences between individual people's brain structure that they can't be overcome even by refined teaching methods. There is, for sure, a real problem here as society becomes ever more dependent on ever more complex science.
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