What is difference between plane angle and solid angle?

A plane angle is one that can be measured completely within a plane. This may be because the angle occurs in a 2-D space, or it is an angle that is contained completely within a plane that is in a 3-D (or higher-D) space.

So the angles in a triangle are plane angles, because they are in a plane. Similarly, the angles in a spherical triangle are plane angles, because even though they measure things in a 3-D space, they can always be shown to be wholly within a plane.

Another way to consider a plane angle is to think of angles within a circle. You can divide the circle up into 2π radians, for example, or 360°, or 400 gon, or whatever units you choose. However, the radian as a unit is defined by the subtended arc length that is equal to the radius of the circle.

A steradian, the basic unit, is solid angle is one that is subtended by a portion of the surface area of a sphere that is equal to r^2, where r is the radius of the sphere. It can be considered to be a cone subtended at the center of the sphere by a part of the surface of the sphere.

A sphere has a surface area of 4πr^2, so a sphere contains 4π steradians.

Credit: https://www.quora.com/What-is-difference-between-plane-angle-and-solid-angle

Comments

Combined-Cycle Power Plant

Combine Power Plant use both Gas Turbine and Steam Turbine to produce energy. Natural gas use for gas turbine.The exhaust heat of gas turbine use in steam turbine. A schematic diagram are given below: Combined Cycle Generation Process

What is automobile engineering?

Automotive engineering , along with aerospace engineering and marine engineering , is a branch of vehicle engineering , incorporating elements of mechanical , electrical , electronic , software and safety engineering as applied to the design, manufacture and operation of motorcycles , automobiles and trucks and their respective engineering subsystems. It also includes modification of vehicles. Manufacturing domain deals with the creation and assembling the whole parts of automobiles is also included in it.The automotive engineering field is research -intensive and involves direct application of mathematical models and formulas. The study of automotive engineering is to design, develop, fabricate, and testing vehicles or vehicle components from the concept stage to production stage. Production, development, and manufacturing are the three major functions in this field. (Source Wikipedia)

List of Mechanical Engineering Companies

There have a lot of mechanical companies all over the world. Here have some list: 1 Apple Inc. Digital distribution, Consumer electronics, Software 2 Aviadvigatel Mechanical Engineering 3 Bystronic Mechanical Engineering 4 Chemtech Information technology, Electrical engineering, Civil Engineering 5 Continuum Electrical engineering, Mechanical Engineering, Service design 6 E.C.H. Will Mechanical Engineering 7 Ford Motor Company 8 GE Aviation 9 HAWE Hydraulik SE Mechanical Engineering 10 Google 11 Kirov Plant Manufacturing, Mechanical Engineering 12 Körber Process Solutions Manufacturing, Mechanical Engineering

Mechanical Engineering

Search This Blog