Uhhh, were these the regular sugar cubes or those ones we were saving that you put in the coffee?

[mahatmakanejeeves]

Hat tip, commenter DoILookAmused2u? Résistance at Joe.My.God:

AND....this is what happens when the shutter speed of the camera doesn't synch with the turbine's angular speed...

...or maybe 👽 are using our technology against us...

@StormHour
#Physics #CthulhuArms ©Joshua Drury.

Link to tweet

And no, that's a CGI effect.

The Wagon-wheel effect is something else. Here's an example of that:

Wagon-wheel effect optic illusion
927 views•Oct 6, 2018

Karp's Korner
1.17K subscribers

BOMBARDIER Q-400.
Fredericton NB to Toronto ON.
Wagon-wheel effect. The wagon-wheel effect (alternatively, stagecoach-wheel effect, stroboscopic effect) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation. The wheel can appear to rotate more slowly than the true rotation, it can appear stationary, or it can appear to rotate in the opposite direction from the true rotation. This last form of the effect is sometimes called the reverse rotation effect.
Videos typically have a frame rate of ~25 frames per second. The 'movie' you see is a result of these snapshots. If you assume the propellers were moving at 9k RPM, that is 150 revolutions per second. If the camera recorded at 150 FPS, the propellers would appear stationary as they would be in the same position at each time a new frame was captured.

The relationship between these two speeds that causes the effect you are describing; given a camera with a near infinite shutter speed this would not happen - except for the fact human perception is also limited by a similar frame rate (that's why films look fluid at only 25 FPS)

[Yonnie3]

1. Nah, it's caused by the cancer

I heard 'bout that windmill cancer on the internets.

[S.E. TN Liberal]

2. This type of cancer might become a new fad...nt

[Major Nikon]

7. ...

[Baked Potato]

3. "Happy Trails to You....... !" 🎵 🎶

[yellowdogintexas]

4. Somebody needs to do that shutter speed trick down in

Sweetwater Texas (windturbine capitol of the world) . There is a forest of them stretching as far as the eye can see as you drive Interstate 10 towards El Paso

[Major Nikon]

8. From the air you can see the end of them

There’s a shitton more than what you can see from the highway.

[Cirque du So-What]

5. In a previous life I performed tests using vibration analysis equipment

Among rhe equipment I used was a strobe light that shined on a rotating shaft then adjusted to make it appear that the shaft was morionless. At highet speeds and frequencies, there was a real danger to bystanders who couldn't discern the strobe effect and assumed the shaft was truly motionless.

[mahatmakanejeeves]

6. I saw that in the Wikipedia article about the wagon-wheel effect.

I hadn't thought of that before.

[Yonnie3]

9. Indeed

Several lives ago, I used a strobe on high speed wrapping machines that had knives cutting the film over 100 times a minute. It was essential to stop the machine before making that small adjustment or fingers would be missing.