Viscosity is a measurement of a fluid’s resistance to change or deformation, or more simply put, how thick it is. A fluid can be a gas or a liquid, and it is easy to see that liquids are thicker than ...
Energy is neither created nor destroyed: it is only transformed. There are many different forms of energy, including kinetic energy (the energy of motion), potential energy (energy that is considered ...
Electrical resistance, denoted by R, is the total opposition to the passage of electric current, or the flow of electrons. Resistance depends on the material, area, and length of what the current is p ...
Forces cause objects to move or deform in some way. Newton’s third law states that for every force, there is an equal and opposite force. This is true for springs, which store and use mechanical energ ...
An engine is a machine used to transform one kind of energy into another to produce work. In this project, we'll learn how to make a rubber band heat engine, a type of engine that converts thermal ene ...
Periscopes were invented to observe things from a hidden position. They were used to see above water from submarines, in all directions from inside a tank, and above ground from trenches by soldiers d ...
Microwave ovens perform dielectric heating, using microwaves stimulated by electricity to heat up dielectric . A dielectric material is one that can be polarized by an applied electric force. Electric ...
Hans Christian Oersted was a Danish scientist who explored the relationship between electric current and magnetism. Current is the flow of electrons, and is how we hardness electricity. Currents creat ...
Electromagnetism is a cool (and useful) natural phenomenon. Electric current, which is the flow of electrons, creates its own magnetic field when in a closed loop. In conjunction with other magnets or ...
Greywater, also spelled gray water, is considered wastewater by most people. However, it’s beginning to be treated and used as fresh water around the world in places dealing with growing populations b ...