To answer the question of what are called harmonic oscillations, one should bear in mind that these physical phenomena - one of the most common in nature.Perhaps, it is difficult to specify the scope, which would not present harmonics.The most common areas of physical theory, which explores oscillatory processes are the mechanical, electrical and electronics, radar and sonar, and others.
combine all these areas, without exception, that the nature of oscillatory processes are generally the same, but because for them there is a general description of the classical theory.Parametric differences oscillatory processes caused only medium of their occurrence and the external factors that can influence the oscillatory motion.The simplest example of oscillatory motion with which we are confronted in everyday life are eg oscillation of the pendulum clock, or electric current.
Fluctuations on the nature of their occurrence are free and harmonic.Free oscillations are called their own, it is emphasized that they have as their source of external disturbances of the medium, which derive from the physical body of static equilibrium.An example is the bob, which is suspended by a thread, and ask that we push some oscillation process.
more significant place in physical theory is given to the study of a phenomenon known as harmonic oscillations.The study of nature is precisely forms the theoretical basis on which the study is based more specific aspects of oscillatory processes - namely, their occurrence in different environments - mechanics, electricity, chemical transformations and reactions.
To describe the harmonic oscillations in physics using the basic parameters such as time and frequency.
Based on our earlier formulated the allegation that there is some common universal model of the flow of oscillatory processes can logically come to the conclusion about the existence of certain universal values that characterize these fluctuations.Consequently, the mentioned parameters - the period and the frequency characteristic of all kinds of vibrations, regardless of their source of generation and environment of their occurrence.
rate is a quantitative value that indicates how many times over a period of time, the physical body has committed a process of change in its static state, and returned to him.For example, you can count how many times the same bob oscillating after we pushed until it stops.
period in the process, will show the time period for which the sinker deviate from its original position and returns to the home of one oscillation.
Exploring harmonic oscillations, it should be understood that the period and frequency of objective linked by the general formula, which ultimately determines the schedule of harmonic oscillations.To find out more specifically what it represents, it should be noted that there are other parametric indicators - amplitude, phase, the cyclic frequency.Their use allows you to use to describe the oscillatory processes trigonometric functions.The most common formula for the construction schedule is as follows: s = A sin (ωt + α).This formula is also called the equation of harmonic oscillations, and allows you to build a graph of the oscillation process, which in its simplest form is a conventional sine wave.In this example, the formula, the coefficients α and ω show exactly what is necessary to perform the conversion from a sinusoid to display a particular oscillatory process.
For more complex oscillatory phenomena naturally complicated and graphic description.This complication is due to the influence of two main factors:
- nature of the process, that is, in what kind of fluctuations are investigated - mechanical, electromagnetic, or other cyclic;
- the environment in which are generated and implemented vibrational phenomena - air, water, or otherwise.
These factors greatly affect all parameters of any oscillatory process.