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Friday, December 5, 2025

Mirage


Aegir Deepwater Construction Vessel (DCV)
Binnenvaart & Transport Nederland

There is something funny going on in this video and I don't know what's causing it. The camera is pointing at a big ship that is some distance away. As you watch the video you can hear the wind blowing and when it does, the towers on the ship seem to wave back and forth. Now I am sure you could create that effect with some fancy video editing software, but I don't think that's what is happening. Is the camera wobbling? I don't think so, if it did, the whole scene would wobble. The only thing I can think of is that the density of the air changes as the wind blows, and that change in density is enough to change the index of refraction and so distort the image. It also explains why only the towers are affected - air that is closer tot he ground is not going to traveling as fast and will not be subject to the same changes in density. Air that is higher up will be moving faster.

2 comments:

KurtP said...

That's something in the video.
It's almost like the sound is interacting with the top of the video because it moves to fast to be natural.

ambisinistral said...

My thought is they are filming it through a transparent surface close to the camera -- a window or something. The distortion comes from that surface being affected by the wind.