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The physics behind a parachute is easy to understand. But making real ones are far from easy. Making toy parachutes seem like a good idea for an easy science project but experimenting with different variations is not as easy as tying strings to a fabric. Making parachutes for use in real life takes a lot of risk and accuracy.

Before modern parachutes gave us the thrill of skydiving it took a lot of guts for early investors to design parachutes that actually work and not fall them to their death. The history of parachutes went through a lot of development and a few deaths.

The modern parachute was invented by Louis-Sébastien Lenormand in 1783. However there are earlier versions of parachutes created by a few centuries earlier. Before the silk parachute was invented, there were basic designs built that worked in the same principles.

Parachutes, past and present

The earliest form was a cloak attached to wooden struts. It was made by an Arab Muslim named Arem Firman in the 9th century. He jumped from a tower in Cordoba and suffered only minor injuries. Parasols were used in China for entertainment. It allows entertainers to jump form high places and float to the ground.

Leonardo da Vinci also sketched parachute with conical designs. It served as an escape device to enable people to jump from burning buildings. In 1617 Faust Vrancic was the first person to be able to make a successful jump with a parachute.

Jean Pierre Blanchard developed his own parachute as a means to get off a hot air balloon. His first demonstrations were done with a dog as the passenger. He later on unintentionally put his invention to the test as he escaped from his ruptured hot air balloon.

In the 1790′s he made a parachute out of silk which were more stringer and lighter than previously used materials. Early parachutes were made of linen with a wooden frame.

Andre Garnerin invented the vented parachute in 1797 and made a successful jump using Blanchard’s design. The vented parachute improved stability during descent. Gleb Kotelnikov invented he knapsack parachute. It was popularized by Katchlen Paulus and Paul Letterman.

The first major use of parachutes was in the military. It was by artillery spotters and pilots. Unfortunately the parachutes were heavy and pilots were not able to use it entirely. The German Air Service provided parachutes to their pilots. Unfortunately there were many setbacks that most of the pilots died when using them.

Leslie Irvin was able to invent

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Martial Arts is one of the contributions of Asia to the world. Who can forget Bruce Lee and the fact that he was first and foremost a martial arts athlete before being a movie star? Even until now martial arts is still a big hit with the increasing popularity of Asian movies like crouching Tiger Hidden Dragon and more recently the House of the Flying Daggers.

The Chinese are the first people that come to mind when it comes to these things but the Japanese are just as athletic with a rich heritage of body contact sports that can be found in their history. The modern Japan still gives honor to these things by holding tournaments and promoting such sports abroad,

One of these is Aikido. It is interesting to note that the word comes from three Japanese words from which one can derive the meaning of the one word. Ai means joining, Ki means spirit and Do means way. From this we can understand why Aikido is beyond just the physical skills of it students especially sin its proponent Ueshiba focused more on the spiritual and philosophical development of his students.

In Aikido, one is not taught violence instead one is taught to be in harmony with the opponent to be able to defeat. This might seem odd but it actually works. In approaching an opponent, the aim of the Aikido practitioner is to be one with the opponent to be able to attack him where he is weakest and in doing so diver or immobilize him but never to kill.

This is where Aikido becomes an art. Art is something beautiful to watch and something positive and Aikido is all that. At least one of the people involved in the fighting strives for harmony and harmony can only be achieved if there is grace in the movements. The moves maybe calculated but there is an air of finesse in doing these movements, not a womanly finesse but just a finesse that emanates peace. The art of peace as what they call in Aikido is one of the most positive influences of Aikido to its students and to everyone who choose to know about this Japanese martial art.

Some of the techniques in Aikido include the following. Ikkyo is the first technique. Using this technique you control an opponent by using one hand in holding the elbow and one near the wrist, this action is supposed to make you pin your opponent down in the ground. Nikyo the second technique is when you do an adductive wristlock that enables you to twist the arm of your opponent that will in turn cause enough nerve pressure.

The third technique is Sankyo which is a pronating technique that directs upward-spiraling tension throughout the arm, elbow and shoulder. There are many other techniques but the first three should get you started.