• Tuesday May 24,2022

Wave

We explain what a wave is and the types of wave that exist. In addition, what are its parts and how this phenomenon can spread.

Waves arise because of oscillations and vibrations of matter.
  1. What is a wave?

In physics, it is known as the 'propagation' of the propagation of energy (and not of mass) through space, by the disturbance of some of its physical properties, such as density, pressure, electric field or magnetic field. This phenomenon can occur in an empty space or in one that contains matter (air, water, earth, etc.).

Rounds are produced as a consequence of oscillations and vibrations of matter, propagating in time as described by Wave Theory, branch of physics responsible for understanding said phenomenon, very common in the universe. The propagation of the rounds is one of the fundamental physical phenomena.

According to the origin of the rounds or the nature of the medium through which they propagate, then, the effects of their appearance and the characteristics they possess will depend. Thus, we can talk about rounds of light, sound, etc., each with physical properties and a different frequency, depending on how resistant or not the medium for its propagation and how much energy they carry.

Some waves, such as sound waves, cannot be transported in a vacuum. They require, therefore, a present physical environment. Others, such as microwaves, can do it perfectly and quickly: this is how the artificial satellites that send information to the Earth operate.

See also: Gravitational Field.

  1. Wave types

Gravitational waves are alterations of spacetime.

We can classify the waves according to different criteria, such as:
According to the medium in which they spread . According to the medium we can distinguish between:

  • Mechanical waves Those that require an elastic medium (liquid, gaseous or solid) and certain conditions of temperature and pressure, to propagate effectively. Example: sound waves.
  • Electromagnetic waves Those that do not require a medium, because they can be perfectly propagated in a vacuum, since they are due to cyclic variations of the electromagnetic field of matter. Example: the light.
  • Gravitational waves . Recently confirmed by science, they are alterations of space-time where the reality of the universe resides.

According to its periodicity . We can talk about periodic waves (it presents repetitive cycles in its production) or non-periodic (its cycles are irregular).

According to your address . They may be one-dimensional (they propagate through a single space dimension), two-dimensional (they propagate through two dimensions and are usually also called superficial ) and three-dimensional (they propagate in three dimensions and are usually called spherical ).

According to the movement of the medium . They can be longitudinal waves (the particles of the medium move in the same direction in which the wave propagates) or transverse waves (the particles vibrate perpendicular to the direction of propagation of the wave).

  1. Parts of a wave

A wave is made up of the following parts:

  • Crest The maximum point in the undulation, that is, in the wavelength: the furthest point of rest it reaches.
  • Period . Represented with the letter T, it is the time it takes for the wave to go from its crest to the next, that is, to repeat itself.
  • Amplitude Represented with the letter A, it measures the vertical distance between the crest and the midpoint of the wave, halfway to rest. This measure can grow or decrease over time depending on the case.
  • Frequency Represented with the letter f, it is the number of times the wave is repeated in a given unit of time, which is why it is calculated according to the formula f = 1 / T.
  • Valley . The opposite of the crest: the point closest to the rest of the wave.
  • Wavelength Represented by the symbol λ (lamda), it is the distance between two consecutive ridges of the undulation.
  • Cycle This is called a complete undulation, from beginning to end.
  1. How do waves spread?

Electromagnetic waves do not require a material means to propagate.

As it has been said, the waves usually need a material medium to propagate, although some can do so perfectly in a vacuum. This depends on the nature of the wave.

For example, electromagnetic waves do not require a material means to propagate, so they are a form of radiation. This is because they constitute alterations in the electric and magnetic fields of the particles, and they move at very high speeds (the speed of light, for example, 300, 000 km / s).

On the other hand, mechanical waves require a physical means to propagate, such as water, a metal, atmospheric air or other elements and surfaces, provided they are susceptible to transmit a ripple, as in tremors or on the surface of the water when we throw a stone into a pond.

Interesting Articles

Acceleration

Acceleration

We explain what is the acceleration and the formulas used to calculate it. In addition, its difference with speed and examples. The concept of acceleration comes from the studies of Isaac Newton. What is the acceleration? We call physical acceleration a vector magnitude (that is, endowed with direction) that the variation in the speed according to the time elapsed of an object which is in motion

Communication Barriers

Communication Barriers

We explain to you what are the communication barriers and the elements involved in your process. In addition, how to avoid these barriers. To communicate, the channel must be conducive to the transmission of a message. What are the barriers to communication? It is known as communication barriers to obstacles and difficulties that may arise during the communicative process and hinder the correct culmination of it or distort the original message

Illustration

Illustration

We explain to you what the Enlightenment is, the cultural and political movement of the 18th century, and what are its characteristics. Prominent figures. This time is also called the Age of Enlightenment. What is the illustration? The Enlightenment is a cultural and political movement known for bringing bright ideas to the dark society of the past

Spam

Spam

We explain what Spam is and for what purpose this type of malicious messages acts. In addition, the different ways to prevent and combat it. Usually, spam is a message with advertising content. What is Spam? The term `` Spam '' is an English word that refers to `` junk mail '' or `` junk Internet messaging , that is: unsolicited, unwanted and / or sender messages unknown , sent in large quantities and usually with advertising content

Cognitive

Cognitive

We explain what cognitive is and what cognitive psychology implies. In addition, its weak points, and differences with behaviorism. Cognitive psychology analyzes how knowledge is produced. What is cognitive? The word cognitive comes from the cognitive cognoscere, which means knowing . Thus, both cognitive psychology and cognitive processes refer to the ability to know through the senses and the reason that all individuals possess

Orbit

Orbit

We explain to you what an orbit is and what is its meaning in the area of ​​chemistry. What is an elliptical orbit and the solar system orbits. An orbit can have various shapes, either elliptical, circular or elongated. What is an orbit? In physics, orbit refers to the trajectory described by a body around another , around which it rotates by action of a central force, as is the gravitational force in the case of the stars light blue In less words, it is the trajectory that an object traces when moving around a center of gravity by which it is attracted, in principle without ever hitting it, bu