The Science of Being Invisible - Reality

The invisible Cloak similar to that in the movie Harry Potter can become reality in near future. Metamaterials provide the substance for making such a cloak. Metamaterials are the materials which are yet to be made by the engineering process that contains a mixture of a metal or plastic but it differs from the taylor made material in the sense that it's properties are not related to the base materials but are because of the geometry in which the materials are combined. These can perform certain things that are not possible with ordinary materials it can  affect the path of waves light waves and sound waves and it has a negative refractive index. Small scale achievement have been obtained but the use for making cloak is not far enough. It can also provide stealth to military equipments. So let's figure how the light behaves by passing through meramaterials.

The left is metamaterial and right is ordinary one 

How an object is visible to naked eyes it's simple it reflects and refracts the light waves which are electromagnetic in nature and these waves after reflection enters through our eyes to form the image of the object, but suppose if an object doesn't allows the light to reflect or refracts through it this is how one can become invisible. Meta materials uses the ideology that it allows the light to guide through it rather than reflecting it the electrons in metamaterial doesn't allow the electromagnetic waves to get reflected or refracted but helps them smoothly guiding through them, and the material will be invisible to human eye and it will cast no shadow. To accomplish this the metamaterial should have a negative refractive indes( reflective index is a property that tells how light passes through a medium), the negative refractive index will allow the light to flow through the surface of the object but the real challenge is in the wavelength of light for having negative refractive index the wavelength of the light should be more than the wavelength of metamaterial then it will work properly and it has to cover the entire visible spectrum ranging from 400 nanometers for violet to 700 nanometers for red,and this would require engineering a material whose dimensions would be one billionth of a meter.
The future is not far enough, sooner we will be able to produce these incredible materials and who knows what changes they might bring, one thing that has to be kept in mind is that all the things follow laws governed by physics seldom it is thought that this is unnatural or it violates physics that is not true.
Science Rules

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Difference in exploring above and below your feet

Voyger the space craft has traveled to the edge of our solar system approximately 18.4 billion kilometers till the time this post is being written and is still moving forward but it will surprise most of the  readers that we are not able to get beneath our feet to a distance of bearly 12.8kilometer. A movie named The Core shows that we travel to the earth's core but that was all fiction. In this space age we plan to take man to Mars but it is impossible right now to even cross earth's crust. The radius of earth is no more than 6400km and humans have been able to dug 12.2km inside the earth in Kola Russia and the deepest place on earth 'Challenger Deep' at Marina Trench which is at 10.8km below the see level has only witnessed 4 man made missions and the irony is that the moon which is at a distance of 350000 km has foot prints of 12 humans.
So why this discrimination of our own beloved planet is going down not useful or not feasible, the major challenge that occurs during going down is the increase in temperature and at the base of Kola the temperature was 180°C which will go increasing to 6000°C at the core and a pressure of 550 giga pascal the machine are no so temperature resistance and most of them fails when worked over 100°C but few techniques are there which will provide them some sheid but the soil doesn't behave like solid the rocks at Kola were in plastic state and further going down most of the things are in liquid state and it is quite Impossible with current technology and engineering to make our way through this molten material, a new revolution is needed to go deep, deeper and deepest. Scientists plan to dig the deepest hole from 2018 and a suitable site is being selected for this, digging from oceans floor is considered a good idea. As we go down something mysterious and unexpected happens diamonds are constructed 100 miles below the surface by extreme pressure and temperature and comes to surface through cracks and volcanic eruption and many rare metals are also obtained from here only and when we will go deeper who knows what will we get maybe some new elements or any other things. A recent study shows that water more than 3 times the water in Ocean is present  500km below the surface and we might even get mountains of gold, titanium, other useful materials. The more our curiosity increase the more are the chances of getting deeper.

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Gravity Assist Maneuver for getting high speed

Acceleration by gravity 

Sling shot is common toy used by every kid in early childhood days but have you ever thought that the same principle can be used to attain a speed of 100thousand miles an hour. Yes this is true somewhere in the early 1960s a scientific thought of accelerating the space shuttle by using gravity as sling shot and this technique is know as the Sling Shot acceleration , Gravity Assist Maneuver. Marine 10 was the first space probe to use gravity assist and the latest is India's Mangalyan which orbited earth for one month before departuring.
This is a simple technique which uses gravity to increase the speed by orbiting the space craft around a planet ( know how to make something orbit click herehttp://imparallel.blogspot.mx/2015/01/getting-things-into-orbit.html?m=1) every time it is attracted by gravity it's speed increase and when it is faced towards sun the sun's gravity attract it and by going a series of these repeated procedures certain amount of speed can be obtained and when it escapes the gravitational pull of a planet the space craft gets accelerated in the same manner when you rotates a stone tied to a rope and suddenly release it. The centripetal force rotates the space craft and gravity attract it but when gravity is gone the rotatory motion geto converted into linear motion. Rosseta is an iconic example of a perfect Gravity Assist Maneuver it has to travel 1billion kilometers to reach its destination which is also traveling at a speed of 55000kmph so to match this speed it orbited three times on earth and one time in mars so the speed can be achieved.
This method is not very costly but a lot of time consuming, fuel payload can be kept minimum using this technique as gravity does the most of the work and higher the gravity higher will be the speed obtained.

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The Science of Levitation (Orbit)

It is human nature to explore new thing and the new thing which I was going to explore was the question that when we jump why doesn't the earth below is moves forward. The answer was much simple than anyone would thought, it is because all of our surrounding revolves with the revolving earth even the atmosphere in which we jump. Newton's motion law explains it well that the frame of reference is same for us when we jump out stand on earth and everyone on earth will see us stationary but any outsider suppose an alien far away from Earth sees us moving forward in parabolic path. It could be demonstrated by throwing a ball up in moving car or train in motion and the ball will land in your hands always.

Model showing satellite revolving around a planet 

The next thing which is to be known after knowing the above answers is that how one move with the same speed as the earth moves without falling down and this led us to the study of setting up satellites in the orbit to understand it let us suppose we throw a ball from the top of a tall tower and till the ball had velocity whose resultant is greater than of gravity it will move forward and when is velocity decreases it will fall toward earth,so it is clear that speed plays a major role in setting up a satellite into orbit and instead of moving perfectly vertical we move horizontal to set up something into orbit let us find out why? To solve this problem we have to know that for every 8000 meters in earth towards horizon the earth bends 5 meter because the earth is a sphere and Newton was the first to know if a body moves down towards earth and if it's speed is faster than 8km per second it will never be able to touch the ground because at every 8km earth will bend by a radius of 5 meter so if we can maintain some height and velocity at the initial state to the satellite it will revolve the earth on its own as the speed will be provided by gravity itself. And if we are able to cross the speed barrier of 11.2km per second then we can escape earth's gravitational field if moved away from the planet. And we all know how much revolution has been brought by the satellites in our everyday life the list will go countless.
 Let's think how would you set up something into orbit if shape of Earth was square? All ideas and remark will be accepted in comments.

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Are you Innovative or Creative

Whatever profession you might be if you are not Creative or Innovative then you are going to suck. Creativity and InnoInnovation are the two terms with which most of the people are familiar with but do they really know the difference between the two terms. These two terms are uses the same ideology but are parallel with each other. Both refers to the unique and new ideas that could be implemented but innovation differs from creativity that it is helpful and useful for the society. Let us considered a simple example of making a tooth brush, a lot of creativity could be shown in making it like introducing a good grip or using fiber glass hairs or any other but if it is not full filling it's main objective that is cleaning the mouth it can't be an innovation irrespective of any creativity shown. But this doesn't mean that you don't need to be creative, the modern lifestyle in which we live is all because of the creativity and innovation shown by humans. Creativity helps us to analyse and answer the problem from many directions it utilizes the maximum potential of the brain.
Here are few tips that will be helpful in making your mind to think better and who knows you might be the next pioneer of any creative and innovative idea.
1) Juggling : Juggling helps to unlock your mind as various regions of mind are activated during juggling, in fact most of the scientists practice juggling.
2) Games : yes games helps in increasing focus and concentration games may be of any type indoor or outdoor but thinking games are best like chess or sudoko.
3) Think: thinking about all the things which you encounter everyday like the various uses of it or what are the alternative for the same item.

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