From the beginning of time, man has dreamed of flying like birds in the sky. Since man was not able to grow wings on his own, he sowed the seeds of imagination in his mind and worked hard to bring it to reality. When it comes to flying, the diversity of human capabilities to fly high in the sky is extraordinary!
Few glimpses of man’s intelligence include aircraft, sky rockets, flying balloons and others. The man has reached the Moon, where no birds have ever flown! However, the power to overcome gravity making things appear lifted up off the ground seems more fascinating. Flying is not levitation.
The idea of levitation looks like some form of magic! What is levitation? An illusion? Or a paranormal activity? Let’s find out! Levitation is the ability of an object to be held aloft without any mechanical support in a stable position.
In olden days, levitation was supposed to be some kind of paranormal activity. Those who were believed to have something related to levitation were called masters or saints or even possessed by demons. Well, levitation is proved scientifically with all the proofs of its existence. Possessed by no demons, levitation is a phenomenon governed by the laws of nature.
Levitation can be done aerodynamically, magnetic and others. Now, let’s see how aerodynamic levitation works and know the science behind it. Imagine yourself playing with soap bubbles, blowing air continuously at it to keep it rise above the ground. Sounds so simple and interesting right?? The fact it becomes possible is that aerodynamic levitation exists. But, does it balance well?? No, obviously!
Like always stability becomes the real issue. Many solutions were tried and tested, but no method was sufficient enough to levitate. Thus, in aerodynamic levitation, the levitation is produced by gas pressure. Air hockey puck is an example for the same.
A special version of aerodynamic levitation is gas film levitation. The system allows spherical samples to be levitated by passing a gas through 1-3mm diameter conical nozzle. Continuous carbon dioxide laser heating allows objects to reach 3000 degree Celsius temperature.
The key benefits of levitation prevent contamination of objects from being in touch with the container. The objects can also be under cooled which makes it serve as a boon for diverse scientific applications.
The glass is a liquid that lost all its mobility. But at the atomic level, it is still a disordered system. Aerodynamic levitation can be used to make glassy materials by melting liquids at high temperatures which are not possible through standard procedures. In situ levitation has also been combined with neutron scattering, NMR spectroscopy and others.
In the alpha and omega, aerodynamic levitation helps to have a wings free fly!!!