Physics

Definition of law of conservation of energy

The law of conservation of energy is the first of the principles that govern thermodynamics. It is also contemplated within the fields of analytical mechanics and chemistry (in the latter case, when analyzing the characteristics of a chemical reaction it is confirmed that there is a conservation of mass […]

Definition of speed of light

The speed of light is the distance that electromagnetic waves that are part of the visible spectrum travel per unit of time. It is a physical constant: that is, a value that does not register changes in a physical process despite the advance in time. Originating from the Latin word velocĭtas, speed […]

Definition of dark matter

Dark matter is that which does not emit any kind of electromagnetic radiation nor can it interact with it. Therefore, it is inferred that it exists from its gravitational consequences on the matter that can be observed. It can be stated that dark matter occupies space and establishes an interaction with gravity, […]

Definition of principles of thermodynamics

The principles of thermodynamics refer to four statements focused on physical quantities that are essential to establish the characteristics of a thermodynamic system. These statements refer to entropy, energy and temperature, key issues to analyze the behavior of one of these systems under certain circumstances. Before delving deeper […]

Definition of electromagnetic spectrum

The electromagnetic spectrum is the range that covers all electromagnetic waves. This is the set formed by all radiation, from those with the shortest wavelength to those with the longest wavelength. The notion of electromagnetic spectrum can also refer to the electromagnetic radiation emitted or absorbed by a […]

Definition of law of universal gravitation

The law of universal gravitation is a legacy of Isaac Newton, an English scientist who included it in "Philosophiae Naturalis Principia Mathematica", a work of his authorship that came to light in mid-1687. This content of great significance throughout history marks the link of proportionality that is established between the […]

Definition of string theory

String theory is a scientific proposition that indicates that material particles are vibrational states of a filament. This model or hypothesis contemplates that space-time has eleven dimensions; that is, seven more than the four that are usually considered (altitude, latitude and longitude plus position in time). Depending on how they vibrate […]

Definition of reverse sublimation

Reverse sublimation is, according to thermodynamics experts, a process characterized by a phase change experienced by a substance that manages to go from the gaseous state to the solid phase, skipping the liquid state instance. Regressive sublimation, desublimation and deposition are other names given to this phenomenon which, for […]

Definition of heat transfer

Heat transfer is the spread of thermal energy from one place to another. It is a physical phenomenon that is analyzed by thermodynamics. There are three major heat transfer mechanisms: radiation, convection and conduction. These modes of transmission are used in multiple areas. Development of the […]

Definition of magnetic separation

Magnetic separation is a physical procedure that allows the components of a mixture to be separated using magnetism. For segregation to be possible, only one of the materials must have marked magnetic properties. This method requires a magnet to be carried out. The magnetic separation process is put into […]