Jim Lucas

Reference Electromagnetic radiation is a form of energy that includes radio waves, microwaves, X-rays and gamma rays, as well as visible light.

By Jim Lucas Published 22 March 22

Reference Engineering is the application of science and math to solve problems. Here we explore the different types of engineering.

By Jim Lucas Published 28 February 22

Reference The first law of thermodynamics states that energy cannot be created or destroyed, but it can be transferred from one location to another and converted to and from other forms of energy.

By Jim Lucas Published 28 February 22

Reference Faraday’s law of induction describes how an electric current produces a magnetic field and, conversely, how a changing magnetic field generates an electric current in a conductor.

By Jim Lucas Published 18 February 22

Reference The Second Law of Thermodynamics says, in simple terms, entropy always increases. This principle explains, for example, why you can't unscramble an egg.

By Jim Lucas Published 7 February 22

Reference Magnetism is a force of nature produced by moving electric charges.

By Jim Lucas Published 2 February 22

Reference Thermodynamics is the branch of physics that deals with the relationships between heat and other forms of energy.

By Jim Lucas Published 2 February 22

Reference The zeroth law of thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other.

By Jim Lucas Published 1 February 22

Reference Humans have invented six devices that combine to make work easier. These six simple machines are the wheel and axle, the lever, the inclined plane, the pulley, the screw and the wedge.

By Jim Lucas Published 1 February 22

Radio waves help us communicate across close and far distances. They also help us identify otherwise invisible objects in space.

By Jim Lucas Published 27 February 19

By Jim Lucas Published 27 February 19

Resistors, inductors and capacitors are basic electrical components that make modern electronics possible.

By Jim Lucas Published 16 January 19

Gamma rays are a form of electromagnetic radiation. They can be used to treat cancer, and gamma-ray bursts are studied by astronomers.

By Jim Lucas Published 29 November 18

X-rays are a form of electromagnetic radiation. One of the most common uses of X-rays is for medical imaging. X-rays are also used in treating cancer and in exploring the cosmos.

By Jim Lucas Published 5 October 18

Microwaves are a type of electromagnetic radiation, and are useful in communications, radar and cooking.

By Jim Lucas Published 9 February 18

Newton's laws of motion formalize the description of the motion of massive bodies and how they interact.

By Jim Lucas Published 27 September 17

Newton's First Law of Motion states, "A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force."

By Jim Lucas Published 27 September 17

Newton’s Second Law of Motion states, “The force acting on an object is equal to the mass of that object times its acceleration.”

By Jim Lucas Published 27 September 17

Newton's Third Law of Motion states, "For every action, there is an equal and opposite reaction."

By Jim Lucas Published 26 September 17

Ultraviolet light is a type of electromagnetic radiation. These high-frequency waves can damage living tissue.

By Jim Lucas Published 15 September 17

Electric current is electric charge in motion, such as the flow of electrons through a wire.

By Jim Lucas Published 1 March 16