What's the shape of a falling raindrop?

"When you run molten lead through a sieve and let it fall into a water tank far below, surface tension forms the lead drops into almost perfect spheres." The first purpose-built shot tower was built by William Watts of Bristol, UK, in 1782. America built its first shot tower in Philadelphia in 1808. The tallest shot tower ever built (but not the first in Australia) still stands in the center of Melbourne though now underneath a glass roof. As less costly methods of making shot were discovered these towers closed up shop, some not until the late sixties. Many of these towers have found new purposes as historical sites, art galleries or simply mysterious links to the past. [more inside]
posted by jessamyn on Jan 23, 2013 - 42 comments