Oscillators Producing Electromagnetic Waves
Diagnosis Using X-rays
Broken bones, internal diseases can be detected and diagnosed by doctors accurately with the help of X-rays or X-rays.
Since the discovery of X-rays in 1895 by Wilhelm Conrad Röntgen, the medical world has made rapid progress to treat internal diseases or broken bones. With the results of the X-ray film images the team of doctors got clear information which parts had to get treatment.
Radio telescope
Radio telescope to capture radio waves and detect other signals (pulsars) from outer space. The discovery of radio waves that came from outer space and was successfully detected on earth by Karl Jansky an electrical engineer from the Bell Telephone laboratory in 1931, had succeeded in developing radio astronomy. A total of 27 radio telescopes were built near Socorro in New Mexico.
For decades radio astronomy has progressed rapidly and managed to provide a picture of the universe with many detected spectrum of other waves coming from outer space such as infa red, ultraviolet, X-rays, gamma rays, and other pulsars until the discovery of neutron stars. Furthermore, it even managed to uncover many things about cosmic rays which were finally examined in depth by core physics scientists especially elementary particles.
A collection of 27 radio telescopes near Socorro
Utilization of Solar Cells To Capture Solar Energy
Solar cell
Electromagnetic waves from the sun in the form of visible light during the day can be captured by solar cells made of semiconductor materials such as silicon. Solar cells will convert this heat energy into electrical energy and can produce electrical voltage.
During the day the electricity voltage is stored in batteries or accumulators so that at night it can be used to turn on electrical equipment or heat water. Solar cells are also developed to drive cars without oil and gas.
Oscillators Producing Electromagnetic Waves
Electromagnetic waves are known to exist. The problem is can electromagnetic waves be produced continuously. Based on Ampere's law and Faraday's law, it was discovered that an electric oscillation circuit can produce continuous electromagnetic waves. The frequency produced by electromagnetic waves is called the resonance frequency, for the LC circuit to be formulated
Oscillation circuit
This principle is used in broadcasting technology both TV waves, radar waves, microwaves, and radio waves. Figure 21 shows a series of transmitters of electromagnetic waves. On the other hand the emitted electromagnetic waves can be captured through the electromagnetic wave receiver circuit
Problems example
Electromagnetic waves in a medium have a speed of 2.8 x 108 m / s. If the permittivity of the medium is 12.76 x 10-7 wb / Am, determine the permeability of the medium.
Answer:
Known:
c = 2.8 x 108 m / s,
ε = 12.76 x 10-7 wb / Am.
Using Maxwell's Equation, we get:
Settlement
That's a review of Electromagnetic Waves: Understanding, Nature, Kinds, and Formulas With Examples of Complete Problems Hopefully what is discussed above is useful. That is all and thank you.