That first trip to the tropics led to discoveries I would never have imagined. I learned to use a certain mercury-vapor lamp that scientists use. When you look at this light, it seems to remain at a constant brightness, but in fact it flashes sixty times a second. The swollen points you see in the moths’ flight paths are wing strokes. This bit of line, all these intricate curlicues and spirals, is about one-tenth of a second—whoop! When photographed, it reveals this beautiful tracery of flight.emmet gowin - artforum.com / 500 words
