Because of the Angleofreflection, the second rainbow appears with the opposite colour scheme to the first.
由于反射的角度，第二层虹的色彩搭配显得同第一层有一点相反。
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It is accurate to within 0.03mm. The same sensor is used on a boat to shine a beam off the tiller bar, using the reflection to measure the Angleof the rudder.
The elusive Planet X is, however, shrouded by a dust cloud that bounces sunlight back to the Sun, except for those rare moments when the angleofreflection is just right.