Introduction
Electromagnetic fluctuations taking place in oscillation circuit, which periodically changing electric and magnetic field characteristics of a.
Projectiles traveling oscillation circuit and generates a variable electric and magnetic fields. An electric field is formed in the condenser and a magnetic field formed coil. Constantly changing electric and magnetic fields are made up of electromagnetic vibrations transmitted as electromagnetic waves.
Oscillation circuit consisting of a capacitor and coils, which are connected in series. The capacitor is characterized by the capacity or ability to accumulate electric charge Characterized coil inductance or induced magnetic field.
In the event of electromagnetic fluctuations of electric and magnetic field energy constantly move from one form to another, but both rural energy amount is always constant.
Electromagnetic waves are waves arising from changes in the electric field in a given point in space. Electric field changes occur when the electrical charges moving in space and creates a uniform electric and magnetic field changes are propagated in space as electromagnetic waves.
If the alternating current flowing in a conductor, then it spreads around the electromagnetic waves. Electromagnetic waves spreading in every point in space recurring electric field and magnetic field changes. These two fields creates a time-varying electromagnetic fields
Electromagnetic waves are transverse to: • echo from obstacles • breaks the boundary between two media
Electromagnetic waves have wave characteristics: • interference, • diffraction, • polarization.
Electromagnetic waves radiate all the bodies in the universe. They spread in space and reaches the Earth. These waves transfer the information about what is happening to distant celestial objects in a different way from the Earth can not be achieved. But the signals from space are so weak that their reception requires very sophisticated device that consists of signal amplifier, large astronomical telescope mirrors and a huge radio telescope antennas.
Questions:
1. Does projectiles traveling oscillation circuit and generates a variable electric and magnetic fields?
2. Does electromagnetic oscillations takes place oscillation circuit?
3. What is ideal tuned circuit?
4. What characterizes the coil?
5. What ingredients are oscillation circuit?
6. What characterize capacitor?
7. What is the period?
8. What are the electromagnetic waves?
9. Which bodies emit electromagnetic waves?
10. Where electromagnetic waves are spreading?
Answers:
1. Yes
2. Yes
3. If the coil conductor resistance is equal to zero, then the fluctuations in the circuit would continue indefinitely and could be called the ideal oscillation circuit. But since the coil wire is resistance, it is heating up and each oscillation period, part of the electric field and magnetic field energy turns into heat and power oscillation amplitude decreases.
4. Inductance or induced magnetic field.
5. Capacitor and coil are connected in series.
6. Capacity or the ability to accumulate electric charge.
7. The time during one full oscillation.
8. Electromagnetic waves are waves arising from changes in the electric field in a given point in space.
9. Elektromagnētiskos viļņus izstaro visi ķermeņi Visumā.
10. They spread in space and reaches the Earth.
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