虹高日头低,早晚披蓑衣　当“日头低”的时候,太阳光线和地平线是非常接近的。这时出现虹,虹心必然接近地平线上,在地面上可以看到虹的半个圆弧。如果空气中水滴很多,分布的空间很广,那么除了可以看到虹外,还可以看到霓,霓顶的半圆弧比虹高且接近天顶。这预示降雨的云已经移近 The height of the sun is low, and the sun shines in the morning and evening. When the sun is low, the sun’s rays are very close to the horizon. When a rainbow appears, the heart of the rainbow must be close to the horizon. You can see the half arc of the rainbow on the ground. If there are many droplets in the air and there is a wide distribution, then in addition to seeing the rainbow, you can also see that the semicircular arcs of the neon and the apex are higher than the rainbow and close to the zenith. This indicates that the cloud of rainfall has moved closer