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World Jump Day
The folks at World Jump Day plan to shift the orbit of planet Earth in order to "stop global warming, extend daytime hours and create a more homogenous climate." They'll achieve this by having 600 million people jump up in the air at the same time on July 20, 2006. And they're looking for jumpers! This, of course, recalls the old idea that "If all Chinese jumped at once, cataclysm would result." This has been debunked by The Straight Dope, which points out that the force generated by one billion Chinese people jumping up in the air at the same time would only be equivalent to about 500 tons of TNT. In other words, not that much. However, I don't think the creators of World Jump Day intend for anyone to take their idea that seriously. The site is registered to a German artist, Torsten Lauschmann. According to his web bio Lauschmann: celebrates glitches, and out-takes, bits in between and images that might be easy to ignore. Lauschmann is currently on a Trans European busking tour under the guise of Slender Whiteman where he will launch his solar powered dub system. He lives and works in Glasgow. Lauschmann also appears to be a member of a German art group called Vene Hammerschlag, which has also hosted World Jump Day on its site. In other words, World Jump Day appears to be some kind of art project hoax.
Websites
Posted by The Curator on Mon Feb 28, 2005 Comments (72)
I hear that this Wednesday is World Hump Day. I been practicing, and I'm ready. One hump or two?
Posted by Hairy Houdini  on  Tue Mar 01, 2005  at  11:14 AM
It appears Lauschmann busking tour was in the summer of 2002 (the "current" was at the time of writing for that website).
Posted by Floormaster Squeeze  on  Tue Mar 01, 2005  at  12:45 PM
If people all around the world jump at the same time, the effects should more or less cancel each other out (not exactly, though, because there would be more people in some areas than others).
You would need to coordinate how many people jump in each place at each time in order to have the desired (infinitesimal) effect on the earth's orbit.
Posted by Gary in Dallas  in  Dallas, Texas  on  Tue Mar 01, 2005  at  12:48 PM
Yes, I agree. If everybody in the world humped at once, what would be the intestinal result? The bog mindles.
Posted by Hairy Houdini  on  Tue Mar 01, 2005  at  01:21 PM
day 1 - jumping day. Lot of fun...
day 10 - sun looks a little bit bigger
day 100 - sun is really big today
day 200 - we killed the guy who propose jumping day. It is hot as hell.
day 300 - we killed all who jumped. Sun is going to kill the rest of us in a few days...
Posted by Loxx  on  Tue Mar 01, 2005  at  05:00 PM
This seems similar to Not One Damn Dime Day.
Posted by Protest Everything!  on  Tue Mar 01, 2005  at  07:19 PM
Not One Damn Dime Day? What's that? Is it like Neds and Chavs and such? Or is it about Cynthia? Is it about DNA Erection? Is it about the Itcha kid? I must know.
Posted by Hairy Houdini  on  Tue Mar 01, 2005  at  07:38 PM
I imagine that there are a lot of people who believe that this will do some good. Does anyone else remember the book that said that when the outer planets align, the Earth would experience all sorts of calamities? Even though scientists quickly were able to prove, often on national television, that the gravitational effects would be less than noticible on the Earth. Last year's great earthquake/tsunami slowed the Earth by so small an amount that it almost couldn't be measured. Do these people somehow think that they are more powerful that that?
Posted by Christopher Cole  in  Tucson, AZ  on  Tue Mar 01, 2005  at  09:54 PM
When the Moon is in the 7th house, and Jupiter aligns with Mars, then Peace will guide the gouramis and Love will steer the angelfish. This is the dawning of the Age of Aquariums.
Posted by Hairy Houdini  on  Tue Mar 01, 2005  at  10:02 PM
I'm down with the Age of Aquariums.
If you're ever in the neighborhood, stop by and I'll show you my Ptychochromis grandidieri and my Paratilapia bleekeri.
Posted by Big Gary C  in  Dallas, Texas  on  Wed Mar 02, 2005  at  01:17 PM
You should see my Platypus Katydid and my Paraphenalia Blynken. Just the sight of them makes the whole world jump.
Posted by Hairy Houdini  on  Wed Mar 02, 2005  at  02:05 PM
Another thing that most people don't realize is that when everyone jumps (and let's assume that only people in the Western Hemisphere are jumping, as they mention on their page), the people move up and the Earth moves down (very little of course). When the people fall back to Earth, the Earth falls back to the people. When the people land, the Earth is back in its original position. The only way to change the Earth's orbit is if the people could actually jump off of the Earth and out of our solar system.
Posted by Nate Smith  in  Hartland, Wisconsin, USA  on  Mon Apr 04, 2005  at  04:05 PM
"extend daytime hours and create a more homogenous climate"

What do I win with more our per date? my biological time will be the same...
I will be 40 years old and I will look like
a 80 years old man.
Another point is that the moon is going to mantain it's orbit... this will generate a real
madness in the oceans. Cities near it will be covered by water.
Posted by Mike  on  Thu Apr 07, 2005  at  12:23 AM
Maxwell, jump. Jump! Go ahead and jump! cool cheese
Posted by Ztrain  on  Wed Apr 27, 2005  at  02:24 PM
This is the most rediculous thing i've ever seen. NO YOU CANNOT CHANGE THE ORBIT OF EARTH BY SIMPLY HAVING EVERYONE JUMP ON IT AT THE SAME TIME. Those of you who know some basic physics realize that conservation of momentum is the reason this cannot happen.
Posted by Person With A Brain  in  College  on  Mon May 23, 2005  at  05:33 AM
Actually, Person with a Brain, it isn't conservation of motion that is the killer to the idea, it is the relative mass. If you apply enough force opposite to the direction to Earth's rotation you could, in theory, stop the Earth. Everyone jumping up and down couldn't do it. That earthquake in Indonesia, according to a couple of reports I read, changed the Earth's rotation by somewhere around a nanosecond or so. The weight of the entire population is so small in comparison to the mass of the Earth that even if everyone acted in concert, it would make exactly no difference. You need a special device only available from the Secret Masters to make any difference.
Posted by Christopher Cole  in  Tucson, AZ  on  Mon May 23, 2005  at  02:14 PM
Christopher, you and Person are both correct. It is possible for us to change the rotation of the Earth (similar to us running on a giant spinning log), but not possible for us to change it's orbit. Person is correct that conservation of momentum is the reason. You aren't disagreeing with each other. He is addressing the orbit, and you are addressing the rotation.
Posted by Nate Smith  in  Wisconsin  on  Mon May 23, 2005  at  09:19 PM
Presuming Bode's Law is not a real law of nature, it is possible to change Earth's orbit. The Earth is slowing down in its orbit due to friction with the Solar Wind even now. As the Earth slows, it moves farther from the Sun, that is the conservation of motion since the Earth will "spend" the same amount of energy traveling a longer distance at a slower speed.

However, I forgot that the original World Jump Day was about changing the orbit and not the rotation. Not that everyone jumping at the same time would do either, but it would be easier to change the rotation because of the energies involved.
Posted by Christopher Cole  in  Tucson, AZ  on  Mon May 23, 2005  at  10:09 PM
Losers, this thing is going to rock.
Posted by Ed  in  Atlanta Ga  on  Thu Jun 02, 2005  at  11:24 PM
What's the matter with you, what can you possible have against this noble undertaking? Why are you undermining the credibility of this deeply serious project on which our future relies? It's guys like you that bring this earth into damnation!!
Posted by Tore  in  Lisbon  on  Tue Jun 14, 2005  at  01:48 PM
Hi,

Well, this bizarre idea came to me as one of those excentric ideas of the 19th century.
We really need to grab our math and physics manuals and remember some principles of classical mechanics, energy, etc. if we are willing to bother us with such nonsense.
An article will be published in Cosmos, http://cosmos.com.pt, with the theory and the pratical side of this so called "project". The values from "The Straight Dope" seem to me wrong, at the first glance - one must know what's mass, weight, velocity and Energy.
As for the day choosen, I must admit this, the guys behind this maniac project did their homework - that I can reveal for now.

I'm just waiting for their reply regarding an interview I requested - but I didn't receive anything ( and probably won't...I wonder why ? smile

Let's wait and see.

Kind regards,

Rui Miguel Fernandes
Posted by Rui Miguel Fernandes  in  Portugal  on  Thu Jun 30, 2005  at  12:22 PM
Those guys are right, no matter how much people could jump at the same time, it wouldn't change our orbit a nanomilimeter. We must be smart... Let's start a World Sprint Day to change earth's rotation. Or better, a World Fart Day! Everyone eats beans and fart and the exact same second!!! Awesome!
Posted by arg  on  Tue Jul 05, 2005  at  11:26 PM
Hello, well, my personal thoughts on all of this? IF, somehow lets just say this thing really works and changes the orbit of the earth, I dont think it will help. It will either become very cold, or very hot. Maybe a new name for this project should be named "Attempting Doom Day"
Posted by Renegade  in  Arizona  on  Wed Jul 06, 2005  at  07:47 PM
1)You're right.
2) It's a hoax - an online art project.
Posted by Boo  in  The Land of the Haggii...  on  Wed Jul 06, 2005  at  07:54 PM
hello!!!!!! i mean u people just criticize the idea but u dont provide one, yes it is the dumbest idea i never seen but at least somebody is trying to do something come on people be open mind dont
Posted by ellatina  on  Tue Jul 12, 2005  at  02:23 PM
The center of mass of earth motion is governed by the resultant of external forces (gravitational, magnetic...etc. etc.): R = M*a.
If there is no external force the center of mass of earth moves with constant speed in a stright line: in this case no internal force (like those from the jump)can change the motion of the centre of mass.
But this is not the case : here we are in presence of external forces.
My doubt is : can internal forces (and mass distribution variation) cause a change in external forces ? If yes the orbit could be changed in principle. Surely the rotation period of the earth can be changed by redistribution of mass !

Giuseppe
Posted by giuseppe  on  Sun Jul 24, 2005  at  07:10 AM
EVERYONE ONCE BELIEVED THAT THE EARTH WAS FLAT, AND WHO SAID OTHERWISE WAS CONSIDERED CRAZY. WHY NOT JUMP IF IT WON
Posted by Copernica  in  Argentina  on  Fri Sep 23, 2005  at  02:06 PM
Yes, and we now consider that idea ridiculous. You are not asking us to "OPEN OUR MINDS TO NEW IDEAS", you are asking us to not use ours. Feel free to jump, but don't pretend that you are doing so as a search for truth.
Posted by Nate Smith  on  Fri Sep 23, 2005  at  04:31 PM
Hi,

Well, I did waste sometime with the subject. Facts: specific angles are choosen for that date regarding each people in the world; the medium point regarding the longitudes makes exactly 90 degrees with the vector Earth-Sun ( they did their math and a complicated one, I must say ). It would be my choice for a stunt like this IF we had enough energy - which we don't. I made several scenarious, an none can move the Earth not even a millimeter - not even a thousandth of millimeter.

Now...as for the effects in the Earth's crust and in the tectonics plaques...there I don't know...You all experienced, I think, the trembling of your house because of a car that crosses your street or the floor trembling with the jump of one kid or one average grown up. The trembling is greater if it's in a hard surface - that is exactly what they ask...there, I must dig some more when I have the time.

Regards,
Posted by Rui Miguel Fernandes  in  Portugal  on  Sat Sep 24, 2005  at  02:14 AM
Hey,
Ok so this won't help a bit, but what really needs to be moved are the people's MINDS not the earth's orbit. Now, this thing people will really remember, and the effect can only be beneficial.

Tore
Posted by Tore Johnsen  on  Sat Sep 24, 2005  at  09:55 AM
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