车道8字曲线
(原标题: Driveway Analemma)
2024-12-04
浏览次数: 12
太阳是不是每天都回到天空的同一地点？不。更直观的答案是8字曲线，这是一年中在同一时间同一地点拍摄的天空图像的合成图。完成后，你可以看到太阳在天空中形成一个数字8。然而，这张与众不同的八字曲线并没有直接描绘太阳：它是由相反的方向形成的。所需要做的，就是在每个晴朗的日子里，在同一时间，注意房子边缘的影子在车道上的什么地方。从3月开始，在美国科罗拉多州的法尔肯，摄影师有条不紊地标记了影子在下午1点的位置。在一张画面中，你甚至可以看到摄影师本人。虽然这条8字曲线将在2025年完成，但你可以从今天开始画你自己的车道8字曲线——不需要任何花哨的设备。
查看原文解释
Does the Sun return to the same spot on the sky every day? No. A more visual answer is an analemma, a composite of sky images taken at the same time and from the same place over a year. At completion, you can see that the Sun makes a figure 8 on the sky. The featured unusual analemma does not, however, picture the Sun directly: it was created by looking in the opposite direction. All that was required was noting where the shadow of an edge of a house was in the driveway every clear day at the same time. Starting in March in Falcon, Colorado, USA, the photographer methodically marked the shadow's 1 pm location. In one frame you can even see the photographer himself. Although this analemma will be completed in 2025, you can start drawing your own driveway analemma -- using no fancy equipment -- as soon as today.
© Nick Wright