Hello friends steemit, in this installment I share the work of one of the greatest scientists in the history of science.
James Clerk Maxwell (1831-1879)
Their achievements constitute the greatest advances of humanity. His greatest achievement THE UNIFICATION OF ELECTROMAGNETISM.
Originally there are twenty equations obtained by Maxwell on which his unified theory is based. In 1884 Oliver Heaviside and Josiah Willard Gibbs using Vector Analysis simplify Maxwell's equations to four as we know them today.
Maxwell mathematically formalized the experimental ideas of Michael Faraday as well as those of other great scientists. Their equations are also known as:
- Gauss's law of the electric field.
- Gauss's law of the magnetic field.
- Faraday-Henry's law of electromagnetic induction.
- Ampère-Maxwell's law.
Maxwell won the admiration of great scientists. Albert Einstein recognized that his special theory of relativity was inspired by Maxwell's equations. Maxwell mathematically predicted that Saturn's rings are composed of individual particles that float around it.
APPLICATIONS
There are innumerable applications of maxwell's equations, one could not conceive the current technologies without MAXWELL'S EQUATIONS.
Figure 5 - Three-dimensional diagram of electric and magnetic fields radiated by an antenna Source
Figure 6 - Three-dimensional diagram of electric and magnetic fields radiated by an antenna Source
Figure 7 - Simulation using FDTD of the radiation of a dipole λ/ 2. The radiation in plane E and plane H is represented by observing the omnidirectional nature of the antenna. The radiation represented uses the direct resolution of Maxwell's equations by means of a space-time discretization. The radiated field is obtained directly from the intensity of the field in the far field area Source
In the field of telecommunications are vital Maxwell's equations, radiation diagrams of an antenna, wireless communications (wifi), cell phones would not be possible without its laws.
Figure 5 and 6 shows a three-dimensional diagram of electric and magnetic fields radiated by an antenna.
These diagrams can only be obtained from Maxwell's equations, in which the solution of them leads to the fields that allow said representation.
Given the complexity of these diagrams, software such as Matlab is used for their representation.
These diagrams allow you to determine fundamental parameters of an antenna such as efficiency, directivity, gain, bandwidth, etc. so necessary in the optimization of satellite transmissions.
The modes of propagation of electromagnetic waves in air or free space, in perfect and dissipative dielectrics are obtained from the Maxwell equations.
Signal transmissions in waveguides, coaxial cables, fiber optics are all governed by Maxwell's equations
References
- Beléndez, “La unificación electromagnética: 150 aniversario de las ecuaciones de Maxwell”, Mètode Nº 84, pp. 16-21, Invierno 2014/15.
- Einstein, “Maxwell’s Influence on the Development of the Conception of Physical Reality”. En J. J. Thomson, J. J. et al. James Clerk Maxwell: A Commemoration Volume 1831-1931 (University Press. Cambridge, 1931).
- F. Everitt, “James Clerk Maxwell: A force for physics”, Physics World, pp. 32-37 (Diciembre 2006).
- J. C. Maxwell, “A Dynamical Theory of the Electromagnetic Field”, Philosophical Transactions of the Royal Society of London, 155: 459-512 (1865).
- L. Campbell and W. Garnett, The life of James Clerk Maxwell (MacMillan and co., Londres 1882)
- Teoría Electromagnética - Hayt & Buck - 7ed
- https://eltamiz.com/2011/10/26/las-ecuaciones-de-maxwell-ley-de-faraday/
- http://www.bbc.com/mundo/noticias/2015/05/150427_james_clerk_maxwell_einstein_escocia_finde_dv
- https://blogs.ua.es/fisicateleco/2015/06/maxwell/
- http://www.salleurl.edu/semipresencial/ebooks/ebooks/ebook_teoria_antenas.pdf
I hope that the content shared in this publication will be useful and contribute to improve their knowledge on the subject. Thank you very much for taking the time to read it. Good night