Physics

Items

• dynamics

  The branch that deals with the forces and motion of objects — essentially, why objects move the way they do.
• earth

  Earth is the third planet from the Sun — a massive body that has gravity, an atmosphere, magnetic fields, and supports life.
• effective

  Often used when simplifying or estimating how a system behaves.
• elasticity

  Elasticity in physics refers to the ability of a material to return to its original shape and size after being deformed by an external force.
• electric

  Anything related to electricity, i.e., the flow of electric charge
• electricity

  The flow of electric charge, usually through wires or other conductors, powers things like lights, phones, and machines.
• electrode

  Conductor through which electric current enters or leaves a medium, such as an electrolyte, a vacuum, or a semiconductor.
• electrodynamics

  The branch of physics that studies the behaviour of electric charges in motion and the electric and magnetic fields they produce.
• electromagnet

  Type of magnet in which the magnetic field is produced by an electric current flowing through a coil of wire.
• electromotive force

  Energy provided by a power source (like a battery) per unit charge to move electric charges through a circuit.
• electron

  A fundamental subatomic particle with a negative electric charge.
• electronegative

  Electronegativity is a measure of an atom’s ability to attract and hold onto electrons in a chemical bond.
• electrostatic

  The study of electric charges at rest and the forces, fields, and potentials they create.
• element

  A pure substance made of only one kind of atom.
• elementary charge

  The smallest unit of electric charge that is considered indivisible in nature.
• elliptical

  Shaped like an ellipse, which looks like a stretched or squashed circle, kind of like an oval.
• emissivity

  A measure of how effectively a material emits thermal radiation compared to a perfect blackbody at the same temperature.
• empirical formula

  An empirical formula shows the simplest whole-number ratio of atoms in a compound.
• endothermic

  A process or reaction that absorbs energy, usually in the form of heat, from its surroundings.
• energy

  The capacity to do work or produce change. It is a fundamental concept in all areas of physics.
• enthalpy

  Thermodynamic quantity that represents the total heat content of a system at constant pressure.
• entropy

  A measure of the disorder or randomness in a system, and it quantifies how energy is dispersed or spread out.
• equation

  A mathematical statement that expresses the relationship between physical quantities.
• equilibrium

  A state where all forces (and sometimes torques) acting on a system are balanced, resulting in no net change in motion or energy.
• equipotential

  A region or surface in an electric field where the electric potential is constant at every point.