Stroboscope: Grinder

[dudeinthesea]

grinder: I swear! i'm not moving! see? touch me

wood: really? oki :)

*wood gets demolished*

grinder: Ngaaa hahaha :D gotcha!

[EuskalHerriaEH]

Nice one. Fantastic, we oculd read even the advertisment.

Thanks.

[JETT721]

Awesome!!!

[demonsparkx]

So oldschool,yet so fucking amazingly awsome. Great video

[agile52]

dont you know you arent supposed to use soft materials on a grinder? rofl

[djtonyxxx5]

the video is good. but next time please be carefull. not kill yoursel or lose a finger on doing that...

XD

thumb up.

[niklasmich]

how to do this ?

[DaveTheYellowDart]

@niklasmich I used a device called a stroboscope. It's basically just a bright flashing light with controls to let you change the flashing rate. You adjust the flash rate until the motion you are looking at (like a wheel spinning very rapidly) appears to stop. They can be useful when dealing with repetitive motion by allowing you to find the rate of repetition, or to freeze the apparent motion.

[mello27]

@DaveTheYellowDart or a timing gun

[RobertsDigital]

@DaveTheYellowDart can you explain wats going on....when you put on the lights, is that how you see it with your bare eyes or it is seen that way through the video..?

[DaveTheYellowDart]

@RobertsDigital Sure -- what you see in the video is almost exactly as you see it in real life with your bare eyes. It actually looks better in real life because there are no issues with camera frame rate causing the black horizontal lines that you see marching downwards in the video.

[justins4d]

Your having too much fun with this thing, I DEMAND YOU TO STOP! lol

[slovakiak1]

Is that stroboscope based on LED Diodes or Xenon tubes? Btw imho very amazing :)

[DaveTheYellowDart]

@slovakiak1 Its got a xenon flash tube in it. Thanks for watching

[trance2307]

Best strobe video I've seen so far

[stanley6602]

That's amazing. Do you synchronis the phase of the rotor and camera and lighting all together? What kind of camera you used?

[DaveTheYellowDart]

There's no need to go to all that trouble for this setup, all I had to do was manually adjust the strobe on the stroboscope until it appeared to make the grinder freeze. The strobe light is so bright that the camera has to adjust for it by effectively dimming the picture, so the time between strobes basically looks black. There are enough strobes per second compared to frames per second that you never end up getting a completely black frame.

[stanley6602]

Thanks for the tips. :-)

[Elgrand66]

lol,. Good illusion. That can it to function with a lamp and a ventilator?