Your Math and Physics Questions Answered
Physicist: This was an interesting back-and-forth, so the original questions are italicized. What was the energy at the start of the universe and how did it create matter? If the question is “how much?” or “where did it come from?”, Continue reading
The original question was: Furthermore, you say, science will teach men (although in my opinion a superfluity) that they have not, in fact, and never have had, either will or fancy, and are no more than a sort of piano Continue reading
Physicist: A greenhouse is a little like a light pump that works because of the picky transparency of glass. The hotter something is, the shorter the wavelength of the light it radiates (it glows bluer). The heat you feel from Continue reading
Mathematician: That depends on what you mean by universe. Here s a framing: A circle of radius R centered at a point P is the set of all points in the plane with distance R from P. The diameter D of Continue reading
The original question from A was: I m reading Sean Carroll s book Something Deeply Hidden, which is entirely about Many Worlds, and I m following along for the most part, but there s something I still don t understand. [ ] Carroll considers an example Continue reading
Physicist: Why bother going out to mine asteroids? Why not stay home? The answer is a little grim. Consider Easter Island, or Iceland, or England; each are isolated places that were once covered in vast forests with abundant animal life Continue reading