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Spooky swings at playground
Posted: Mon Nov 17, 2008 1:34 am
by PB
Posted: Mon Nov 17, 2008 5:44 am
by Beach
That is wild. If its not the wind, magnetic pull, or someone making them move with a long fishing line... then what the hell is it?
Thanks for finding that one. I have some friends that are going to love it.
Posted: Mon Nov 17, 2008 6:08 am
by Demivec
I would think that the cause is actually earth motion translated to the supporting legs, this movement would pull the swings from the top, not the bottom as would commonly happen with wind or "string tugs". The earth motion can be cause by "nearby" vehicular traffic such as a highway for instance or bodies of water such as oceans. It could be exaggerated by the depth of the supports and the firmness of the underlying foundation (i.e. rock).
The swing only has to be in harmony with the motions to have them add up and produce the result. The chance of harmony would be affected by the swings position on the structure (the distance from the supporting legs to it's overhead attachment) and also by the length and nature of it's supports (chains).
Posted: Mon Nov 17, 2008 12:28 pm
by idle
lol amazing what a bit of wind will do, though if it wasn't wind and wasn't caused by passing trucks vibrating the ground or some dude with a fishing line I'd probably become all religious
its windy
http://www.youtube.com/watch?v=l54W2gM- ... h_response
http://www.youtube.com/watch?v=f1QpvBGnv2E&NR=1
Posted: Mon Nov 17, 2008 12:49 pm
by pdwyer
This video is from a commercial that was filmed in Europe. When the commercial was finished the editors noticed a white mist floating around the car after it came out of the trees. It is difficult to see but if you look closely you can see the mist that caused the commercial to be pulled. Click below to watch.
http://jp.youtube.com/watch?v=EeNgGpLucgM
Check this out for freaky! Helps if you have headphones
Posted: Mon Nov 17, 2008 12:52 pm
by PB
It's great footage though!
Re: Spooky swings at playground
Posted: Mon Nov 17, 2008 12:55 pm
by aaron
At 50 seconds in the first video you can see the wind pick up a plastic bag (or something) in the background and blow it away at high speed.
The wind is making that swing move.
Posted: Mon Nov 17, 2008 3:22 pm
by djes
It's a dead child, killed by a wild dog, back from the ground. He was just 4, and never really wanted anything but play ; so time to time he's coming back to this place where he had fun, before.
PS: We'll see if there's a replicant among us
Posted: Mon Nov 17, 2008 4:32 pm
by Rook Zimbabwe
OK now I will tell you the one about the schoolbus in Mexico...
Posted: Mon Nov 17, 2008 4:40 pm
by srod
It's okay, Mulder and Scully have been informed and are on their way!
Posted: Mon Nov 17, 2008 5:30 pm
by SFSxOI
Another case for The Fringe team.
My Guesses:
1. Materials expanding and contracting at uneven rates as a result of temperature differences in the metal and small upward thermals created by ground moisture evaporating. The thermals are warmer nearer the ground and as they rise it varies the temps along the chains of the swing vs the temp of the surrounding air causing them to be slightly different in temps along their length thus expanding and contracting at a different rate along the length of the chains. The chains holding the swings are also not exactly the same length which accounts for the twisting and sidewards motion (which implies that either a mistake was made in measurement or they were set that way deliberately for this trick). I'll bet if they replaced the chains with rope you would not see this happening. The shape of the seat also helps as it already provides maximum air current resistance from the top and bottom, which means different air density at the tops and bottom of the seat, such a difference causes lift which adds to the initial movement to get things going. The denser moist air from evaporating ground water creates thermals that hits the bottom of the seat and the lighter air at the top of the seat helps induce a small amount of lift, the swing starts moving, and the differences in temp along the chain keeps things going. Its the long train effect; why very long trains need an initial jerk to start the whole thing moving - the seat lift is the jerk and the expansion and contraction is the power that keeps things moving. The time limits it gives of 5 to 10 days also coincides with water evaporation actions in cooler/colder weather as you notice people are wearing coats in some of the videos. Water evaporates over a longer period of time in cooler/colder weather but it still evaporates, the sun hits it or the air warms and small thermals are created. I'd be willing to bet that this doesn't happen at night, you notice that its daylight when this happens, thus accounting for warmer air or sunlight activity to produce the thermals.
or....
2. Vibration from nearby traffic.
or...
3. The result of the exploding star in the Q3 quadrant near the crab nebulae.
or.....
4. It could be the ball bearings, yep, thats it, the ball bearings. Who woulda thunk.
or....
5. Its the internet, what did you expect.
(number 1 is my best guess - i'm not saying its correct mostly in case i'm wrong
its just a guess thats all, besides it does sound pretty good and explains everything
)
