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Bungee jumping

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Bungee jumping is an adrenaline-filled activity involving a person leaping from a significant height. The jumper remains connected to a large, elastic cord throughout the entire descent.

Jump from nevis bungee platform
Jump from nevis bungee platform

This activity can take place from many different launching platforms. Common sites include tall buildings, cranes, or bridges spanning deep ravines. Natural geographic features like cliffs also serve as popular jump sites. Some specialized jumps occur from hovering aircraft, such as helicopters or hot-air balloons. The primary thrill of the experience comes from the sensation of free-falling and the subsequent rebound.

Bungie-Jumping
Bungie-Jumping

The physics of the jump involves a specific sequence of energy changes. When a person jumps, they begin to accelerate downwards due to gravity. As the person falls, the elastic cord begins to stretch. This stretching process builds up potential energy within the cord. Initially, the tension in the cord is less than the weight of the jumper. At a specific point, the tension equals the jumper's weight, and acceleration temporarily becomes zero. As the cord stretches further, the tension increases significantly. This creates an upward acceleration that eventually brings the jumper's vertical velocity to zero. The cord then recoils, pulling the jumper upward in a rebound.

Platform for bungee jumping from a crane, stored on ground (cropped)
Platform for bungee jumping from a crane, stored on ground (cropped)

The jumper will continue to oscillate up and down until all kinetic energy is dissipated.

Equipment selection is critical for both the style of the bounce and participant safety. Many commercial operators use factory-produced braided shock cord. This cord consists of many latex strands enclosed in a tough outer cover. Some manufacturers apply the outer cover while the latex is pre-stressed. This technique creates a harder, sharper bounce and increases durability. Other operators, particularly in the southern hemisphere, use unbraided cords with exposed latex strands. These unbraided cords provide a softer, longer bounce and can be produced at home. To prevent accidents where participants might become detached, many operators use a body harness as a backup to the ankle attachment. These harnesses are often derived from professional climbing equipment.

The roots of this activity can be traced to ancient cultural traditions. On Pentecost Island in Vanuatu, young men participate in a ritual called land diving.

Pentecost Land Diving
Pentecost Land Diving

During this rite of passage, men jump from tall wooden platforms with vines tied to their ankles. This test of courage requires the divers to intentionally hit the ground. The vines are used to absorb enough force to ensure the impact is non-lethal. Modern bungee jumping was inspired by these traditional ceremonies. In 1979, David Kirke, Simon Keeling, and Geoff Tabin performed the first modern bungee jumps from the Clifton Suspension Bridge in England.

Saut à l'élastique Superman - Viaduc de la Souleuvre
Saut à l'élastique Superman - Viaduc de la Souleuvre

Commercial bungee jumping was organized by the New Zealander A. J. Hackett. He performed his first jump from Auckland's Greenhithe Bridge in 1986. Hackett eventually opened the world's first permanent commercial bungee site at the Kawarau Bridge near Queenstown, New Zealand.

Mombas over Kawarau bridge --Queenstown--
Mombas over Kawarau bridge --Queenstown--

Since 1980, several million successful jumps have been recorded worldwide. This high safety record is maintained by operators who strictly follow rigorous standards. They must double-check all calculations and fittings for every single jump. However, errors can still occur, such as using a cord that is too long. For a safe jump, the cord must be substantially shorter than the platform height to allow for stretching.

Today, there are many notable heights and locations for bungee jumping around the globe. The Macau Tower in China offers a massive jump of 280 meters. While the tower also features a "SkyJump" using a steel cable and decelerator system, the proper bungee jump at the tower holds the Guinness World Record for the highest commercial bungee jump. In South Africa, the Bloukrans River Bridge was the first bridge used for the sport on that continent. Another famous site is the Verzasca Dam in Switzerland, which features a jump of approximately 220 meters.

Bungee tower atop the Verzasca Dam, CH
Bungee tower atop the Verzasca Dam, CH

This location was famously featured in the opening of the James Bond film *GoldenEye*.

There are several variations of bungee-style activities that differ from the standard jump. In "Catapult" or "Bungee Rocket" variations, the jumper starts on the ground. The cord is stretched while the person is secured, and then they are released to shoot upward. Another version is the "Bungee Trampoline," which combines elements of trampolining with bungee cords. Participants wear a body harness attached to two high poles, allowing them to jump much higher than a standard trampoline would permit.

SCADcloud7mb
SCADcloud7mb

Finally, "Bungee Running" is a common activity at fairs and carnivals. In this version, people run along a track with a cord attached to them, which pulls them back once they reach a certain distance.

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🖼️ Images & Media (9)
File:Bill's Bungy Jump.jpg
Bill's Bungy Jump.jpg
File:Pentecost Land Diving.JPG
Pentecost Land Diving.JPG
File:Jump from nevis bungee platform.jpg
Jump from nevis bungee platform.jpg
File:Bungie-Jumping.jpg
Bungie-Jumping.jpg
File:Platform for bungee jumping from a crane, stored on ground (cropped).jpg
Platform for bungee jumping from a crane,...
File:Bungee tower atop the Verzasca Dam, CH.jpg
Bungee tower atop the Verzasca Dam, CH.jpg
File:Saut à l'élastique Superman - Viaduc de la Souleuvre.JPG
Saut à l'élastique Superman - Viaduc de...
File:SCADcloud7mb.jpg
SCADcloud7mb.jpg
File:Mombas over Kawarau bridge --Queenstown--.jpg
Mombas over Kawarau bridge --Queenstown--.jpg
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