Chemical resonance
From the point of view of organic chemistry, resonance is a tool that is used to carry out the formulation of molecules with double or triple bonds that can be represented by two or more Lewis structures in which the only difference is the distribution of electrons, these representations are called resonant structures.
This method allows to establish how the molecule can be stabilized by delocalization of its electrons, which allows a greater approximation to its real structure, since many times a single Lewis structure cannot adequately describe a molecule, which is why it is considered that the structure of a molecule can be represented by the mixture of all possible Lewis structures and not as an equilibrium between them.
When drawing the organic compounds that constitute resonance hybrids, it is not possible at any given time to define the number of electrons on some of the atoms, which leads these compounds to merit a special nomenclature that consists of enclosing all the resonant structures in square brackets.
It is considered that the greater the number of bonds, the greater the stability of the resonant molecule, the stability is also related to the energy of the molecule and the charge, the more stable being the one with the negative charge in the most electronegative atom.
Two molecules that are clear examples of resonance are ozone and benzene.
Physical Resonance
Resonance, from the point of view of physicalIt is a phenomenon that occurs when an external force is capable of vibrating at the same frequency as a certain object, causing it to vibrate, increasing the amplitude of its movement, which will result in a certain effect.
This is a phenomenon that occurs on a daily basis without our being aware of it many times.One of the main applications of resonance is the tuning of radio stations, which is achieved when the receiving device enters the same frequency as the radio station. signal emitted by the station.
In the medical field, by placing a patient in the field of a powerful electromagnet and sending a radio wave that enters into resonance with the hydrogen protons, it is achieved that these emit a signal that is captured to obtain an image of the patient that is known as Nuclear Magnetic Resonance.
Other phenomena in which the resonance principle is applied is in the design of stringed instruments, in microwave ovens and even in the wireless electrical transmission discovered by Tesla.
