Skip to main content

Everybody Jump

I'm not quite sure where people got the idea that something cool would happen if everybody jumped at the same time. Logistically speaking it is pretty crazy to even think something like this could be possible, but when you allow yourself to imagine a little bit, it can seem pretty cool. The writer(s) of the book What if? Serious Scientific Answers to Absurd Hypothetical Questions, have an interesting take on how the scenario would play out.

First, the entire Earth's population takes up an area roughly the size of Rhode Island, and to provide a clearer visual, the writer(s) suppose that everyone actually is in Rhode Island. Somehow, everyone manages to jump at exactly the same time, despite being crammed together, and there is a brief moment of dramatic suspense. However, nothing happens. There is a rather loud stopping noise from the combined impact of everyone's feet, but the impact is spread out and too insignificant in the context of the weight of the Earth to actually do any damage. 

Now, the people of Earth are faced with the problem that everyone is in one place and nobody except for a small fraction know where they are. People would try to use their cell phones and maybe attempt to locate friends or family, but nobody in the crowd would get any bars because Rhode Island's cell towers would not be able to deliver reception to that many cell phones. Even if T.F. Green airport somehow managed to get people on flights back to their homes, it would take them several years to even make a dent in the crowd. So if people wanted to leave immediately, they would have to steal a car and hop on either I-95, 195, or 295. The number of people leaving simultaneously would cause a massive traffic jam, and eventually people would run out of gas and be forced to abandon their cars and steal new ones. Law enforcement would cease to exist, so this would not be a major issue. Over time, people would spread out throughout the northeast, but most would stay stuck in Rhode Island, and food would become scarce. People would slowly begin to die of starvation, and the population would be reduced significantly. Those who made it out of Rhode Island would have to start a new civilization, however this would be very difficult because any two people who meet would be unlikely to speak the same language. Overall, Earth's population would be significantly reduced if everyone were to jump in one place at the same time, but the Earth it self would be largely unaffected.
Image result for earth
https://what-if.xkcd.com/8/

Comments

Popular posts from this blog

Physics of Sound Dampeners and Active Noise Cancellation

Physics of Sound Dampeners and Active Noise Cancellation Sound dampening foam panels in a recording studio. ANC headphones worn by pilots and/or passengers in consumer aviation aircraft.  Acoustic treatment of soundscapes has grown alongside the sound production industry. Whether through absorption panels, diffusors and cloud panels to treat a space or headphones placed directly over the ears of listeners, acoustic treatment comes in many forms. Environments are treated acoustically to absorb excess sound to prevent sound levels from crossing a threshold above which the desired goal cannot be had. Before getting into sound dampening, we must discuss sound. Sound is produced when an object vibrates (a form of oscillation) and temporarily displaces nearby air molecules causing a wave effect as the displaced molecules collide with their neighboring molecules. Sound waves are fluctuations in pressure as the initial displacement of molecules experiences collisions that in ...

Large Hadron Collider

The Large Hadron Collider (LHC) is the world’s largest and most powerful particle accelerator. The LHC is the largest machine in the world. It took thousands of scientists, engineers and technicians decades to plan and build, and it continues to operate at the very boundaries of scientific knowledge. It first started up on 10 September 2008, and remains the latest addition to CERN’s accelerator complex. The LHC consists of a 27-kilometre ring of superconducting magnets with a number of accelerating structures to boost the energy of the particles along the way. Map of LHC (located in Geneva, Switzerland) Thousands of magnets of different varieties and sizes are used to direct the beams around the accelerator.  Just prior to collision, another type of magnet is used to "squeeze" the particles closer together to increase the chances of collisions. The particles are so tiny that the task of making them collide is akin to firing two needles 10 kilometres apart with suc...

Aerodynamics of a Golf Ball

One may wonder how a small golf ball can travel at incredibly high speeds for such long distances.  While the swing of the club is a major component, the structure of the golf ball is quite important.  Unlike a baseball or tennis ball, a golf ball has dimples all over it (usually 336 dimples).  These dimples allow the golf ball to travel without facing much air resistance.  This diagram shows how air travels around the golf ball. The dimples on the golf ball also prevent drag that would occur in the wake region, resulting in further distance.  Also due to the contact with the club during the swing, the golf ball has backspin during its entire flight.  This diagram shows the motion of the golf ball mid flight with the lift force of F. There are hundreds of different types of golf balls that a player can choose.  Some show little affect to a player's game while others can alter their performance completely.  Personally, I prefer Callaway Supers...