Stroboscopic effect makes chopper's blades appear motionless

Originally published at: Stroboscopic effect makes chopper's blades appear motionless | Boing Boing

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Nope, that’s an Illuminati copter and they only give them to the cool kids.

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I must go, my planet needs me.

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This is always fun to see.

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Video titled “When fps = rpm”

More like, "When fps = n x (revolutions per second)/(number of rotor blades)

(Assumes blades are identical and the number of blades is greater than one and n is a positive integer)

Getting on a plane, will revise statement and check math later.

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Assuming your formula still holds up:

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Captain Disillusion can spare you the trouble of checking your math (which is correct). He does the best-on-the-Internet explanation of this effect, as is his way:

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Captain Disillusion is a real treat.

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There’s nothing quite like making a grand exit.

image

The Russians have had this technology for many years ;]

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The back blades are clearly powering the whole thing. That’s why it is going in circles.

The word stroboscopic always makes me think of

Late news breakin’, this just in
Tonight there was a power cut in the city of madness
And all conversations died in the burst of a solar flare
In the darkness an angel won the beauty pageant
Stroboscopic snowflakes fell from the stratosphere
And all the neon blew down funky Broadway
And shorted out the eastern shore
Only saxophones and beach trombones
Were left to shout out
“We all need a little more”

from Tony Adams by Joe Strummer

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