posted on Jan, 28 2013 @ 04:41 PM
Originally posted by TheFlash
Originally posted by GoOfYFoOt
It seems to me to be either just before dawn or just after dusk, meaning that the elevation would be in direct sunlight, even though it is dark on the
Hence the "lighted" vapor trail...
It appears to me to be lighted from directly above. Do you seem it as lighted from the side? If so please point out what exactly indicates that to
What you fail to visualize is that the contrail is not solid. It appears as such, but is made of billions of tiny particles. Each particle acts like a
mirror, reflecting light all by itself. So, the distance from the sun to the nearest particle and then reflected to your eye, versus the distance to
the furthest particle and back to your eye, is insignificant. Also, the light reflecting from each vapor drop will refract through adjoining drops,
which will give the appearance of color changes in the length of the trail, itself!
Hence, the effect.