缝眼

Using LED glowsticks, flashlights, even fireworks, combined with time-lapse photography, light graffiti artists create a unique tagging that wraps around objects dimensionally, allowing them to tag in a way they’d never be able to with spraypaint.

Linkinn - Light Graffiti

Pigeon Point Lighthouse, originally uploaded by MumbleyJoe.

每年中的一天，旧金山湾区的鸽点灯塔（Pigeon Point Lighthouse）会像 135 年前一样，用 5 盏煤油灯（估计不是古装剧里的那种）和一组菲涅尔透镜来点亮灯塔。via：煎蛋

据说，有些人看到她顺时针旋转，有些人看到她逆时针旋转。看到顺时针的，右半脑更活跃，看到逆时针的，左半脑更活跃。博客李淼 » 智力类型和其它

偶第一眼，看到的是逆时针，接着看就一直是顺时针了。奇怪。