In my recent Worlds of 1 Spatial Dimension article, I wrote about various one-dimensional worlds (the Income Line, the Rainbow Line, and the Aeolian Line) — all of them involving dimensions which are not themselves physical dimensions of space. What is the distinction between a general dimension and an honest-to-goodness spatial dimension? In short, what do we mean by saying that a dimension has something to do with physical space? Click here to learn more.
First Time Visitor?This site addresses various aspects of science, with a current focus on particle physics. I aim to serve the public, including those with no background knowledge of physics. If you're not yourself an expert, you might want to click on "New? Start Here" or "About" to get started. If you'd like to watch my hour-long public lecture about the Higgs particle, try ``Movie Clips''.
- In Memory of Joe Polchinski, the Brane Master
- The Significance of Yesterday’s Gravitational Wave Announcement: an FAQ
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- LIGO and VIRGO Announce a Joint Observation of a Black Hole Merger
- Watch for Auroras
- An Experience of a Lifetime: My 1999 Eclipse Adventure
- Ongoing Chance of Northern (or Southern) Lights
- Lights in the Sky (maybe…)