Library Articles
Don’t miss a moment of the adventure when software engineer David Wheeler finds himself embroiled in a world of intrigue and danger.  Check back ...

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Every year students have to interview engineers as part of their studies. Can you please help them out? Engineer interview Questions from a student t...

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Our editors contacted eleven universities offering online Master of Engineering programs.  Of those that reported enrolment data, the average program growth over the past 5 years has been 79%.  That’s an annual growth rate of more than 12%.  And while some fared better than others, every university we contacted reported significant growth in their online Master of Engineering programs. 

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Fundamentals of Engineering exam (FE Exam)

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Containment ideas from ENGINEERING.com users for the BP oil spill.

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The net force acting on a body accelerates it. But it takes something to give the body an angular acceleration. A force is needed, but it must be applied in a way that creates a twisting or turning action. Torque, τ is the rotational version of force, and results from the application of one or more forces. Torque is specified relative to a chosen rotation axis or pivot.

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A 12-story building in China, laying on the ground.

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Creeping closer inch by inch, 900 feet above the mighty Colorado River, the two sides of a $160 million bridge at the Hoover Dam slowly take shape. The bridge will carry a new section of US Route 93 past the bottleneck of the old road which can be seen twisting and winding around and across the dam itself.

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Why is advertising wasted? It's because most advertising isn't targeted at the right people at a time when they are ready to buy. Say you are providing some sort of engineering consulting services. Should you purchase a billboard on a highway? Or create a television ad for the Super Bowl? More than 95% of the people who saw your billboard or your Super Bowl ad are never going to buy engineering services from you or from anyone else. And that's not because there is anything wrong with your ad. It's because they just aren't in your target market.

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Air Flow Conversion Calculator

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Laser Real Time Unit Converter

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Beam Deflection Calculators - Solid Rectangular Beams, Hollow Rectangular Beams, Solid Round Beams

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Convert values to and from dozens of energy measurements.

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There are a number of complex equations that deal with water pump engineering. Although not difficult to work with pen and paper, they can be time-consuming. This page eliminates much of the labor. Simply "plug in" your values in the blanks and press the "Calculate" button.

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It calculates the maximum torque that can be transmitted by a clutch that is undergoing uniform wear. To use this calculator, enter value in empty boxes below then click on Calculate button to compute the maximum clutch torque.

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High Speed Machining has brought major benefits to manufacturers and will continue to do so. However, with so much talk about high spindle speeds it is tempting to retrofit for as high a shaft speed as possible, but there are more things to to be considered in selecting the right spindle.

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This calculator calculates the properties of welds when treated as lines.

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The calculator computes ratios to free stream values across an oblique shock wave, turn angle, wave angle and associated Mach numbers (normal components, Mn, of the upstream).

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This calculator uses Chézy and Manning's formula to calculate the wetted perimeter, hydraulic radius, flow area, Chézy coefficient and flow velocity.

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The calculator computes ratios to free stream values across a normal shock wave and compares pressure and temperature variations across a normal shock wave between given state 1 and state 2.

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The calculator computes the pressure, density and temperature ratios in an isentropic flow to zero velocity (0 subscript) and sonic conditions (* superscript). Select an input variable by using the choice button and then type in the value of the selected variable. The default input variable is the Mach number, and by varying Mach number you can see the effect on Mach angle. You can also select Mach angle as an input, and see its effect on the other flow variables.

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The calculator will estimate the number of cubic yards that will be required.

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The calculator will display the number of cubic yards required.

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The calculator will estimate the number of cubic yards that will be required. Note that this is an estimate. There is significant variation in fill space among different blocks. This calculator assumes the use of double open-ended bond beam blocks.

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This calculator helps you compute key properties of earth's atmosphere and aerodynamic quantities on a reference body in metric and English unit systems.

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In 1686 Sir Isaac Newton published his work on the law of gravity in his Mathematical Principles of Natural Philosophy.

Newton's law of gravity states that every particle in the universe attracts every other particle with the force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

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Thermodynamics is the study of relationship between energy and entropy, which deals with heat and work. It is a set of theories that correlate macroscopic properties that we can measure (such as temperature, volume, and pressure) to energy and its capability to deliver work. A thermodynamic system is defined as a quantity of matter of fixed mass and identity. Everything external to the system is the surroundings and the system is separated from the surroundings by boundaries.

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These force laws, together with the laws of motion, are the foundations of classical mechanics. They are based on experimental observations and were formulated more than three centuries ago by Isaac Newton (1642-1727).

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Shortly after Oersted's discovery in 1819 that a compass needle is deflected by a current-carrying conductor, Jean Baptist Biot and Felix Savart reported that a conductor carrying a steady current exerts a force on a magnet.

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There are a few forms of this rule, and it can be applied in many ways. Originally, it was a trick for right-handed coordinate systems to determine the direction of the magnetic field surrounding a long, straight wire carrying a current. Note that the magnetic field lines form circles around the wire.

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Also called Pascal's Principle
Pascal's law — developed by French mathematician Blaise Pascal — states that when there is an increase in pressure at any point in a confined fluid, there is an equal increase at every other point in the container.

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Ohm's law was named after George Simon Ohm. It states that for many materials (including most metals), the ratio of the current density to the electric field is a constant, that is independent of the electric field producing the current.

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Newton's Law of Cooling

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Law of Atmospheres and Boltzmann Law

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Kepler's Laws

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Ideal Gas Law

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Generalized Hooke's Law

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Faraday's Law of Induction

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Coulomb's Law

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Buoyant Forces and Archimedes' Principle

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Ampere's Law

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Telescope

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Solar Oven

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Small Motor

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Seismograph

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Rotary Steam Engine

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Range Finder

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Match Stick Rocket

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Large Motor

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Humidity Meter

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