Purple Side Down

[Greg Marra]

I am not a poofologist, but if I recall correctly, the "nub" on the balls is always on the purple (and I think blue?) side of the poof ball. Maybe, as it is rolling along, this extra weight makes the ball tend to stop with the purple side facing down.

[coastertux]

I found a purple side up .
http://www.chiefdelphi.com/media/photos/24467
Look at the cluster of balls in the lower right-hand corner.

[Adam Richards]

Originally Posted by coastertux

I found a purple side up .
http://www.chiefdelphi.com/media/photos/24467
Look at the cluster of balls in the lower right-hand corner.

Right, but there won't be a purple side up ball in the middle of nowhere in open space. The only reason those are purple side up is because they're in a cluster with other balls.

[Lil' Lavery]

Yup, it was not allowed to continue rolling until it found its own natural rest.

[petek]

We noticed the same thing in Philly (okay, Sarah noticed it and pointed it out to me). After extensive research, I have postulated a theory that it is due to a resonance between gravity waves and the color purple. The resonant peak of this interaction is at about 400 nm (hence, it mainly affects the purple balls) and it is a very weak force, which explains why it manifests itself on curved, light-weight objects such as poof balls.

[Elgin Clock]

Well, it's all real simple to explain. Purple, and Blue are not light colors, they are heavy colors.. so no wonder why they end up blue/purple side down.

Wait, what's that you say? The opposite of light is not heavy, but it is dark??
That's silly.


w00t for fun with the English language.

[MissInformation]

Okay, that's odd. I looked through my photos and almost always the balls with the black or purple halves end up with the purple or black side down (anyone have a ball that is purple on one side and black on the other?) I spotted one or two that did not fit this description (though one may have still been in motion) and several balls that were kind of centered (though half of them were leaning more toward the black/purple side). I've looked at enough photos to think there's something more than an coincidence...

One proposed theory is that the darker sides draw in more heat and are therefore a tad bit softer and the balls then just rest on the softer sides more often.

Heidi

[KenWittlief]

Originally Posted by Elgin Clock

Well, it's all real simple to explain. Purple, and Blue are not light colors, they are heavy colors.. so no wonder why they end up blue/purple side down.

Wait, what's that you say? The opposite of light is not heavy, but it is dark??
That's silly.


w00t for fun with the English language.

close!

Purple and blue are cool colors, red yellow and orange are warm colors.

Cool things contract and have less volume - ie hot air rises and cool air sinks.

Frozen water is the only known exception in the universe.

[Michelle Celio]

Originally Posted by Greg Marra

I am not a poofologist, but if I recall correctly, the "nub" on the balls is always on the purple (and I think blue?) side of the poof ball. Maybe, as it is rolling along, this extra weight makes the ball tend to stop with the purple side facing down.

I think you're right...

But either way this is still...cool. I wish I had a purple sided poof ball!!

[coastertux]

In my photo archives, I have found a very few Poofs with the purple side up, however, it is not clear if they are still in motion or not. I also noticed plenty of balls with the purple side to the side too.

[MustangRobotics]

Yes, after one of my teammates told me about this post i looked on the Newton field during a finals match, every ball landed blue down (they only used blue and red balls). After wittnessing this i went back to the pit to find that the blue and purple sides of the poof balls have the little nubs on them and the weight of them/friction must make the balls stop rolling on these sides.