From Citizendium, the Citizens' Compendium
- Engineering : The profession in which a knowledge of the mathematical and natural sciences gained by study, experience and practice is applied with judgment to develop ways to economically use the materials and forces of nature for the benefit of mankind.
- Physics : The study of forces and energies in space and time.
- Classical mechanics : The science of mechanics, which is concerned with the set of physical laws governing and mathematically describing the motions of bodies and aggregates of bodies geometrically distributed within a certain boundary under the action of a system of forces.
- Force : Vector quantity that tends to produce an acceleration of a body in the direction of its application.
- Mechanical engineering : The branch of engineering concerned with the utilisation of the basic laws of mathematics, thermodynamics, fluid dynamics, and system dynamics in order to create unique solutions to physical problems.
- Civil engineering : A broad field of engineering dealing with the design, construction, and maintenance of fixed structures, including roads, buildings, airports, tunnels, dams, bridges, and water supply and sewage systems.
- Acceleration : The increase of an objects velocity (or speed) per unit time.
- Acceleration due to gravity : The acceleration of a ponderable object, which is near the surface of the Earth, due to the Earth's gravitational force.
- Bar (unit) : A unit of pressure measurement (symbol: bar) defined as 100,000 Pascals.
- Dyne : Force in cgs system; symbol: dyn; 1 dyn = 10−5 N.
- International System of Units : Metric unit system based on the metre, kilogram, second, ampere, kelvin, mole and candela.
- Isaac Newton : (1642–1727) English physicist and mathematician, best known for his elucidation of the universal theory of gravitation and his development of calculus.
- Gravitation : The tendency of objects with mass to accelerate toward each other.
- Joule : The SI unit of energy (symbol: J) which is a measure of the capacity to do work or generate heat.
- Kilogram : The kilogram is the basic unit of mass in the International System of Units (SI, metric system).
- Kilogram-force : A unit of force which will accelerate 1 kilogram of mass to 9.80665 m/s2, the standard average acceleration due to gravity on Earth's surface (referred to as gn).
- Kip : Add brief definition or description
- Mass : The total amount of a substance, or alternatively, the total energy of a substance.
- Metre (unit) : Unit of length; one of the seven SI base units.
- Pascal (unit) : The SI unit of pressure; the force of one newton acting uniformly over an area of one square metre.
- Poundal : Add brief definition or description
- Pound (mass) : A measurement unit of mass used in the United States customary, Imperial, and other systems of measurement.
- Pound-force : A measurement unit of force which will accelerate 1 pound of mass to 9.80665 m/s2 (≈ 32.17405 ft/s2), the standard average acceleration due to gravity on Earth's surface (referred to as gn).
- Pound per square inch : A unit of pressure in the U.S. customary units and defined as the pressure exerted by a force of one pound-force applied to an area of one square inch.
- Pressure : A ratio equal to the force applied perpendicular to the surface of the area divided by that area (force/area).
- Sthène : Add brief definition or description
- Torr : A non-SI unit of pressure (symbol: torr) with ratio of 760 to 1 atmosphere, selected to be approximately equal to the fluid pressure exerted by 1 millimeter of mercury (symbol: mmHg) and thus 1 torr ≈ 1 mmHg.
- U.S. customary units : The units of measurement that are currently used in the United States.