Aliens

The word alien is derived from Latin word 'alienus' which means belonging to other. Aliens are referred as any creature born or raised in some other planets except earth. So the first question that pops in our mind while talking about aliens is that "Do aliens really exists?" And if they do, where are they? How do they look like? Are they dangerous? There is a lot of things we do not know about them which makes us more curious.

Lets Try To Travel Faster Than Light

The most basic thing in physics and astronomy we all have known from years is the speed of light which is 3*10⁸ m/s. The speed of light was tried to calculate from the time of Galileo. Galileo tried to calculate the speed of light in 1968 with the help of his assistant by placing covering and uncovering the lamps held by both of them at some distance. Galileo was only able to deduce that light travels at least 10 times faster than sound. Then after Galileo, many other experiments were carried out to calculate the speed of light. In 1862, French physicist Foucault modified the Fizeau's method of calculation of speed of light and calculated the speed to be 2.98*10⁸ m/s. In 1926, Nobel Prize winner in physics, Albert Abraham Michelson calculated the speed of light from Michelson's method to be 2.997*10⁸ m/s. Today the speed of light is adopted to be 3*10⁸ m/s.

Then the great scientist of all time, Albert Einstein published the "Theory of Relativity" which explained the speed of light can never be crossed by any matter. Since then the speed of light is considered as the ultimate speed anything can travel in this universe. However, several theories and ideas have been purposed to go faster than light or make the light to travel in speed greater than its own speed (although they may not be correct but are convincing). So let's discuss each of the ideas in brief.

What is the speed of Earth?

We all know the rotation and revolution of the earth. But do you know any other factors after revolution that affect the movement of earth in both direction of movement and speed of earth? Well is a lot and its seems quite complicated but it is not. You'll know yourself after reading this article because today we are going to calculate the speed at which the earth moves step by step. But before that, I want you to guess the speed, just randomly you know. Why not better comment the guess in the comment section and later check how much close you got it. Well lest start the discussion.

Why keyboards are made QWERTY?

Haven't you ever wondered why the heck is the keyboard made in this QWERTY way? I mean why not make it simple as ABCDE or at least simpler than this? It would be so easy to remember all the keys than the keys are now in random order. But wait, keys are not kept in random order. Okay, so at first I would like to tell you that YES, there was indeed such a kind of a layout for typing at the initial stage.

When typewriters were invented back in 1860's alphabetical keyboards were used. With the development of science and technology, different types of keyboards were used. It was quite easy to learn and type at great speed, because the keyboards before were invented by studying probability of using in words so that people could type faster. The letters such as vowels, D, H, N, S and T are frequently used in most of the words in english. So, these keys were kept close and rest were kept farther away.

Run off River (ROR) Pump

Run off River Pump

The term "Run off River" means operated by running water. This project requires a continuous flow of water to work and does not require electricity or any other kind of energy forms. The history of ROR Pump points in the mid 1800's when people used water wheel to draw water from river or well. The same principle is used in this project with some advanced modifications through engineering calculations so that to make it more efficient and sustainable. 

The ROR Pump basically consists of a water wheel or turbine and pump. This system is based on the KE of the flowing water and the pressure difference created in the cylinder. It follows the principle of conservation of energy. The principle of conservation of energy states “The energy can neither be created nor be destroyed but can be converted from one form to another form”. It also follows the Pascal’s Law of pressure. It states “The pressure applied to an in-compressible liquid kept in closed vessel transmits equally in all directions”.