Spinning top designed for Benham's discs

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Project by Scott posted 12-11-2012 04:29 PM 4109 views 15 times favorited 16 comments Add to Favorites Watch

Benham discovered in 1895 that spinning black and white discs show subtle colors, and everyone sees different colors. The effect is amazing, and if you watch the disc on the spinning top, as the rpm’s slow, the colors and patterns change.

You can see this effect in action here:

I made this for a child for Christmas, from cherry, maple and sapele. For the discs, I found some patterns on the internet and printed them on standard paper.

-- Scott in North Carolina

16 comments so far

View HorizontalMike's profile


7008 posts in 2242 days

#1 posted 12-11-2012 04:37 PM

Wow! What a neat and FUN project toy! Very cool!

-- HorizontalMike -- "Woodpeckers understand..."

View a1Jim's profile


114967 posts in 2905 days

#2 posted 12-11-2012 04:48 PM

Very cool idea Scott great idea

-- Custom furniture

View Doe's profile


1272 posts in 2158 days

#3 posted 12-11-2012 10:07 PM

Looks great and I think it’ll look greater when playing with it; I think I want one.

-- Mother Nature talks, I try to listen

View Ted78's profile


169 posts in 1328 days

#4 posted 12-11-2012 10:10 PM

That’s cool, I think I’m stealing that idea for my nephews’ Christmas present

-- Ted

View Scott 's profile


207 posts in 1595 days

#5 posted 12-11-2012 10:14 PM

Thanks for the comments! Feel free to take that idea, I think it will be a fine Christmas present.

-- Scott in North Carolina

View Gary's profile


8939 posts in 2760 days

#6 posted 12-11-2012 10:21 PM

I must be a dud….no colors

-- Gary, DeKalb Texas only 4 miles from the mill

View Fishinbo's profile


11362 posts in 1503 days

#7 posted 12-11-2012 10:21 PM

I see the different colors! Very fun!
You have a happy kid this Christmas :)

View Scott 's profile


207 posts in 1595 days

#8 posted 12-11-2012 10:44 PM

The colors are very subtle, so you have to look close.

-- Scott in North Carolina

View Scott 's profile


207 posts in 1595 days

#9 posted 12-11-2012 10:47 PM

At that link the default speed is 0.9 rps, but I don’t see the colors clearly until you speed it up to at least 3.5 rps, and then they are shades of brown.

-- Scott in North Carolina

View quicksilver's profile


192 posts in 1915 days

#10 posted 12-11-2012 11:54 PM

Great idea

-- Quicksilver

View nonickswood's profile


526 posts in 1715 days

#11 posted 12-12-2012 12:15 AM

Very Cool,
I agree with Doe, “I think I want one”

-- Nick, Virginia,

View exelectrician's profile


2326 posts in 1755 days

#12 posted 12-12-2012 05:04 AM

Thank you for showing me this interesting effect. Wow! Your tops are going to be a hit at Christmas – good for you.

-- Love thy neighbour as thyself

View Bill's profile


403 posts in 1477 days

#13 posted 12-12-2012 05:20 AM

Cool. I finished some tops for gifts yesterday, thanks for the link on the printouts.

-- Putting the "mental" in experimental since 1973

View JuanGatico's profile


71 posts in 1514 days

#14 posted 12-12-2012 03:54 PM


View Surfside's profile


3389 posts in 1501 days

#15 posted 12-12-2012 10:20 PM

Very unique!

-- "someone has to be wounded for others to be saved, someone has to sacrifice for others to feel happiness, someone has to die so others could live"

showing 1 through 15 of 16 comments

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