Found 151 Articles for Science & Technology

Earth rotates around its own axis which is tilted at 23.5 degrees, from the plane of its orbit around the sun, in the eastward direction. It takes almost 24 hours to complete one rotation. The Earth rotates at a speed of 460 m/s, that is approximately 1650 km/hr at the equator. The angular velocity of the Earth decreases as we keep moving toward the poles.The Earth's rotational speed is slowing down with time. According to atomic clocks, the present day is 1.7 milliseconds slower than a century ago. It is not a big issue as it will take more than ... Read More

All things that fly using wings need air. Moving air has a force that will lift kites, airplanes, and balloons up and down. An aircraft experiences four basic forces, they areLift: The upward force acting on the aircraft which helps the airplane to fly.Drag: The backward force caused by the resistance of air flow.Thrust: The forward force produced by the engines of the aircraftWeight: The body and cargo weight of the aircraft acting in a downward direction.An aircraft flies when the lift force exceeds the weight of the aircraft. For this to happen the aircraft must move at high velocities. ... Read More

A rocket can be an aircraft, spacecraft or a missile which is propelled by a rocket engine. A rocket engine works on the principle of Newton's Third law, that is, for every action, there is an equivalent and opposite reaction. Rocket propellant is the fuel which burns and produces thrust to propel the rocket.The propellants are usually fueled together with the oxidants. Oxidants are required to burn the fuel efficiently. Thus the chemical reaction in the combustion chamber produces the required energy for thrust.The propellant is burnt in a controlled manner in the combustion chamber of the rocket engine and ... Read More

Neptune is the coldest planet in the solar system as Pluto has been excluded as it was regarded as a dwarf planet. It is the eighth and farthest known planet from the Sun. It has 17 times the mass of Earth and is the fourth largest planet in the solar system. It takes 164.8 years for Neptune to finish one revolution around the sun and the elliptical orbit of Neptune is inclined 1.77° compared to that of Earth.Voyager 2 is the only spacecraft that visited Neptune. It analyzed Neptune's rotation, tilt, weather conditions and also its moons and ring systems.Physical ... Read More

Robonaut is a NASA robot, which is designed as a humanoid. The artificial intelligence makes it easier for Robonaut to do the same jobs as a human. Robonaut could help with anything from working on the International Space Station to exploring other worlds. The core idea behind the Robonaut series is to have a humanoid machine work alongside astronauts. Its form factor and dexterity are designed such that Robonaut can use space tools and work in similar environments suited to astronauts.These new space explorers won’t need space suits or oxygen to survive outside of the spacecraft. Thus they might help ... Read More

Both scramjet and Ramjet are types of jet engines. A ramjet is an air breathing jet engine which is usually associated with supersonic transport. Ramjets can start at supersonic speeds only, so as a result they cannot be started at zero velocity and cannot produce thrust as there is a lack of airspeed.Hence assisted take off flights or rockets are needed to or accelerate it to a supersonic speed from which it starts producing thrust. This makes ramjet engine to be efficient only at supersonic speeds as it can accelerate to speeds of about Mach 6. Ramjet has revolutionized Rocket ... Read More

A turbojet engine is used in Aircraft. These are air-breathing engines which suck in air from the atmosphere for combustion. It has various components like inlet, compressor, combustion chamber, turbines, and nozzle. Air is drawn into the turbojet engine, compressed, mixed with fuel, and burned continuously.The exhaust product of this burning operates the turbine for the compressor, producing thrust which propels the aircraft. Turboprops are used in smaller and slow-paced air crafts as turbojets are not efficient at low speeds whereas turbofans have better specific fuel consumption than the turbojet. These engines are generally installed below the wings or near ... Read More

Quantum figuring contemplates hypothetical calculation frameworks (quantum PCs) that make coordinate utilization of quantum-mechanical marvels, for example, superposition to perform operations on data. Quantum PCs are unique in relation to binary digital PCs in light of transistors.While regular advanced registering requires that the information is encoded into twofold digits (bits), each of which is dependable in one of two distinct states (0 or 1), quantum calculation utilizes quantum bits, which can be in superpositions of states. A Quantum Turing Machine is a hypothetical model of such a PC and is otherwise called the general quantum PC.What are they?Starting at 2017, ... Read More

Avul Pakir Jainulabdeen Abdul Kalam otherwise called A. P. J. Abdul Kalam; (15 October 1931 – 27 July 2015), was the eleventh President of India from 2002 to 2007. A professional researcher turned statesman, Kalam was brought up in Rameswaram, Tamil Nadu, and studied material science and aviation design.He spent four decades of his life as a researcher and science head, primarily at the Defense Research and Development Organization (DRDO) and Indian Space Research Organization (ISRO) and was personally required in India's civilian space program and military rocket advancement efforts.He received the title Missile Man of India due to his ... Read More

Scientists have figured out a way that enables the protein to stay active outside its cell. They progressed in combining proteins with synthetic components like fiber that ensures the protein activity. This opens a giant door to develop protein mats that can soak up and trap chemical pollution. This is a great boon to the natural environment which lessens the effects of pollution.The scientists are developing fiber mats that contain random heteropolymers that stabilize organophosphorus hydrolase, an enzyme that breaks down a well-known insecticide. The researchers used the RPH/OPH combination to make fiber mats and submersed these mats in that ... Read More