Evelyn Maitee Marín in DefinicionABC

Evelyn Maitee Marin

Industrial engineer with a master's degree in Applied Physics Sciences and a doctorate in Educational Sciences. Professor at the University of Zulia.

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Not all constants are dimensionless. When it is dimensionless, it means that it is a pure number, without associated units, and that it has the capacity to be independent of any system of units. For example, the fine structure constant (α) is dimensionless and is useful for characterizing electromagnetic interaction. Its value is α […]...

For example, the pool table forms a rectangle, the standard dimensions of which are 188 cm x 96 cm for the playing area. Characteristics and properties • It has four sides that are congruent two by two, that is, the opposite sides have the same length. • It has four right angles, which means that […]...

The standard unit of measurement for mechanical work is the joule (J), which is equal to the energy transferred when applied a force of one Newton (N) to an object and moves it through a distance of one meter (m) in the direction of the force. Mechanical work depends on […]...

The road shown in the image has a specific length, that is, a measure that expresses the dimension or linear size of said road if we imagine it as a rope that can be straightened and measured with a tape metrics. The dimension is invariable, while the unit associated with the dimension […]...

Integers is the mathematical grouping that includes positive, negative and zero natural expressions, but without including fractions. They are denoted by the letter \(\mathbb{Z}\), given by the positive integers as \(\mathbb{Z}\) +, the negative integers such as \(\mathbb{Z}\) –, for its part, zero is considered neutral, that is, it has no sign. […]...

The electron is one of the tiny particles that make up an atom along with protons and neutrons. Electrons always remain outside the nucleus of the atom, made up of a combination of protons and neutrons. To show how small the electron is, we can say that its mass is 1/1836 times that of […]...

The name of the theory is based on the assumption that fundamental particles are one-dimensional objects that are resemble strings, which oscillate at different frequencies, which determines the mass and type of particle that represent. This theory originated approximately in the late 1960s and was developed by several […]...

As with other quadrilaterals, the rhombus is made up of four closed sides that form its perimeter. These four sides are always equivalent in length to each other, since if any of them presented a minimal difference with others, we would be talking about a rhomboid and not a rhombus. These four sides form two […]...

Etymologically, parallelogram comes from the influence of the French parallelogramme, on the late Latin parallelogrammum, with respect to the Greek παραλληλόγραμμον (parallēlógrammon), formed by parallēlus, from parallel, determined by the prefix παρα- (para-), as regards 'beside', and ἀλλήλων (allḗlōn), of other'; and the suffix -γράμμα (-grámma), which refers in this context to each line, referring to […]...

The hertz or hertz is a unit of frequency that measures the number of cycles per second of an electromagnetic wave or vibration. Abbreviated as Hz, it was named after the German physicist Heinrich Rudolf Hertz, who discovered electromagnetic waves. The unit was adopted by the International Electrotechnical Commission in 1930. […]...

Authors at D.ABC

Augustine Repetto.
Degree in Psychology, graduated from the National University of Mar del Plata. Currently, a Postgraduate student in Human Sexuality: clinical and educational sexology based on the Gender and Human Rights Perspective.

Agueda Munoz Gerardo.
Degree in Physical Anthropology from the National School of Anthropology and History. Master in Anthropology from the National Autonomous University of Mexico. Currently, she is studying the PhD program in Anthropology at UNAM. Among his topics of interest are human migrations, genetic anthropology and indigenous peoples of Mexico.

Angel Zamora Ramirez.
Graduated in Physics from the University of Colima. Student of the Master's Degree in Biomedical Engineering and Physics at Cinvestav.

lilen gomez.
Professor in Philosophy, University of Buenos Aires, Argentina. Performance in the field of teaching and research, in areas of Contemporary Philosophy.

Pedro Gomez Molina.
Graduate in Environmental Sciences and Master in Geography from UNAM. He conducts research on historical mining, historical-GIS, and historical mapping.