4 ms·

Or you could use a simple rule of thumb. Something like, "Let's not build skyscrapers that are giant parabolic reflectors aimed at things of value (people, cars

Or you could use a simple rule of thumb. Something like, "Let's not build skyscrapers that are giant parabolic reflectors aimed at things of value (people, cars, other buildings, etc.)" This seems like a really stupid mistake to make. TWICE.

jcampbell1 13y ago
...or you could put the concave side on the North. That also solves the problem.
- bodhi 13y ago
  Then you build one in the southern hemisphere. Oops!
  - dsuth 13y ago
    In the southern hemisphere everything is upside down too, so the rays would reflect off into the atmosphere, I expect.