Stroboscope: Grinder

Video demonstrating a stroboscope stopping the apparent motion of a grinder. You can see the grinding wheel appear to spin when there is a small load added to it. Towards the end the wheel appears to sit motionless in one position before moving to another -- this is me manually "scrolling" it around by adjusting the stroboscope.

Category:

Science & Technology

Tags:

• stroboscope
• tools
• grinder

[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.

[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.

[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

[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.

[mello27]

@DaveTheYellowDart or a timing gun

[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.