Machine Parts

Generally camshaft control valve when it is closed or open. There are two types of engine more used valve mechanism such as 4 stroke cycle engine and 2 stroke cycle engine.   Valve should be open and closed time to time which is more preferable and helpful by control camshaft. There are three types of valves one is Rotary valve, Poppet Valve   and another is sleeve valves.  Valve and Valve Mechanism: For exhaust gas which is residue and input of cylinder air fuel mixture which should be provide time to time, all of this input and output from a cylinder or a system controlled by valves. Among of the three valves types Poppet valves is more popular and used worldwide universal automobile engine.         Poppet valve mainly contain a circular disc which is up and down with a spring. When valves open spring must be applied external force. But now scientist is more developed their technology and process such when spark and suction occurred in c

   For Learn about NASA New project one can see here which more help to you learn outer space of earth. Most of the people in whole world  want to go Moon and other space in world outer surface. NASA means National Aeronautics and Space Administration. NASA controlled by United States government. In 1958 American president Dwight D. established NASA who was a American president. More than 18 thousand one hundred people work in NASA.

At closer inspection, the silver semicircle at the back of the room contains a microphone rig rather than a wormhole leading to other planets, and the instrument pointing at it is an enormously high-pressured air jet, not a teleporter. Computers in the adjoining office can create 3D soundscapes of the noise recorded inside the chamber. The £500,000 facility is one of a suite of testing labs built at the university's Institute of Sound and Vibration Research (ISVR) in an effort to create quieter aircraft. It was created when Rolls-Royce asked the team to explore a potential noise issue regarding one specific valve on a particular turbo fan engine, explains Prof Jeremy Astley, director of the ISVR. The valve's job was to blast extremely hot air out of the the engine. "In previous engines there were other noise sources so we hadn't noticed this one," he said. "In noise control when you bring

LED means Light Emitting Diode . LED which is used as   a semiconductor and work as alternative source of sunlight. In 1962 LED discover scientist and it’s intensity is very less than update LED. One can see various types of LED such as Red Light Emitting Diode, it’s intensity is very small Blue Light Emitting Diode, it’s intensity is very high   Green Light Emitting Diode, it’s intensity is very high In physical science two types of LED seen one is p-type LED and one is n-type LED. In a p-n junction when holes and electron meets energy released from electron, because electron contain high energy and hole contain low energy, when energy level change and Photon emit   energy , light is created. Some LED materials examples given bellow: White :   White color LED contain Yellow phosphor, voltage drop amount is 3.5 Volt and wave length is board spectrum. Pink : Pink color LED contain phosphor which is may be one or tw

A spacecraft which is flying as like as a bird outer surface of earth and used as a vehicle.  There are many spacecraft objectives such as look   earth, make a communication between earth and outer line of air space, search for new planetary, exilement human and transit cargo. Sputnik 1 which is flying to earth outer surface and it   is the first spacecraft in earth. In 1967 Russia start sent spacecraft in earth outer surface which is mainly target for Soviet. About one hundred spacecraft Russia fly in sky and also facilitation provide on   International Space Station.                  United States fly their Space Shuttle more than Russia about 135 space Shuttle which start in 1981. And their Space Shuttle give facilitation to Spacelab . Before some era scientist use a spacecraft or space shuttle which is not reusable for this reason cost is much high. But developing of Spacecraft and Space Shuttle is now reused. There have some bad impact on environment when scientis

Marine steam engine which is more used in ship for creating power for supply to mechanical energy in a ship. Reciprocating steam engine is more used in ship.  After world war II people made steam engine which create a large amount of power. But day by day change of technology now more used in ship diesel engines and steam turbines. In 1712 Thomas Newcomen first commercially developed Marine Steam Engine who was a Scottish engineer. After one hundred year in 18 th century steam engine more developed and walk on way of water which is 1 st steamboat ride in world successfully. Following this 1807 Robert Fulton successfully developed a watt engine. In 19 th century Marine steam engine is more developed by scientist. And Marine Steam Engine divided by two method of manufacture number one is Cylinder technology and number two is connection mechanism. Some example of connection mechanism is crosshead, side lever, vibrating lever, vertical, oscillating, back acting, trunk, di

FCC means Face-Centeres Cubic structured which is known to all as a crystal structure.  Carbon variation and arrangement of a metal and which is fully stable allotrope. In whole world diamond is highest precious metal and it contains high corrosion resistance, hardness and also contain high thermal conductivity. Diamond stability is not grater than graphite but it is more use   diamond in our practical purpose. Diamond Application sector in industry, as a cutting tool, hard rigid, knives, cell and so on. Why diamond is various color? In a atom all carbon atoms make a strong covalent bong which greater than any other bond. All diamond contain some another metals which is very small amount but not negligible. It is used in various purposes. Diamond color is blue when it contain boron, Diamond color is green when it is comes to sun light. Diamond color is yellow when it   contain nitrogen metals. Diamond color is brown when it contains some residue which make defect