ItsJarvis

WHAT IS DARK MATTER?           Dark matter is a hypothetical form of matter in existence which accounts 85% of the total mass of the universe. This form of matter is different from what we generally observe around us as it does not appear to interact with normal matter and radiations such as light which makes it invisible to the naked eye and thus making it extremely difficult to detect using usual astronomical equipment. It is thought to be composed of some undiscovered atomic or sub-atomic particles. It is also said that even Black holes are made up of Dark Matter as they too are invisible. Evidences for dark matter include observations of light bending around the gravity of unseen matter and also calculations that show many galaxies would fly apart instead of rotating in the universe due to very low mass as the observable matter in just 15% so its pretty sure that they contain large quantities of unseen matter. Till now there are no signs of observation of dark matter as it barely

WHAT IS A HOLOGRAM?           A Hologram is a 3 dimensional representation of an object which can be seen without the use of intermediate optics such as goggles, glasses etc..The term "Hologram" can refer to both the encoding of the light field as an interference pattern and also the resulting image. The technique by which holograms are made is called Holography. Holography is a technique by which a light field is recorded and projected through a laser. It is based on the principle of interference and is generally made by creating an interference pattern with the use of light waves. A holographic image is visually indistinguishable from the actual object. A Hologram can produce details of the recorded object at the microscopic level. HISTORY           In the late 1940s, physicist  Dennis Gabor  working in the field of X-ray microscopy with other scientists discovered Holography. The discovery was an unexpected result of research into improving electron microscopes at the

WHAT IS A BLACK HOLE?                   A Black Hole is a region in space where the gravitational effects are extremely strong. They are so strong that even light and electromagnetic radiations cannot escape from it. It is said that a Black Hole is formed at the end of a Star's Life. When a Star is dying all its matter is compressed and forms a small body whose mass is very high. Black Holes of the size of an atom can have a mass more than a mountain. The boundary of the Black Hole from where no object can escape, not even light is called as the Event Horizon. One can easily enter a Black Hole but there are no possible chances of coming out of it. The gravitational forces can easily rip apart the objects that enter a black hole in such a way that there will be no physical evidences of the existence of the object. WHO DISCOVERED A BLACK HOLE? KARL SCHWARZSCHILD           The early works on a black hole was done in the 18th Century by John Michelle and Pierre Simon Laplac

Nanotechnology is a branch of science or technology which deals with structures at  nanoscale . The size of these structures variate from 1 nanometer to 100 nanometers. A nanometer is 1 billionth of a meter or  10 - 9  meters. It involves the study and application of fields of science such as physics, chemistry, biology, material science and also Engineering. It is the most advanced technology in the world today. Nanotechnology is used in almost every field in the world today. They are replacing bulk materials and chemicals in all forms. They can be produced by manipulating atoms to have the desired properties and hence are good in usage compared to bulk materials. HISTORY RICHARD FEYNMAN           The first concept of nanotechnology was given by a renowned physicist  Richard Feynman  in his talk "There's plenty of room at the bottom" in the year 1959 in which he described the possibility of manipulation of atoms as a more powerful form of synthetic chemistr