Author: workhouse123
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What Is Acoustics?
The branch of physics that is concerned with the study of sound is known as acoustics. We can define acoustics as, The science that deals with the study of sound and its production, transmission, and effects. A scientist or researcher who studies acoustics is called an Acoustician and someone working in the field of acoustics…
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General Theory of Relativity
General Relativity theory, developed by Einstein in 1907-1915, states that being at rest in the gravitational field and accelerating are identical physically. For example, an observer can see the ball fall the same way on the rocket and on Earth. This is due to the rocket’s acceleration, which equals 9.8 m/s2. This theory relates to…
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Special Theory of Relativity
Einstein first introduced this term in the year 1905. It is a theorem that deals with the structure of space-time. Einstein explained this theory based on two postulates – This is the theory which laid the foundation of time travel. According to Einstein, the rate at which time tics decreases with the increase of the…
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Introduction to Relativity
Relativity is a theorem formulated by Albert Einstein, which states that space and time are relative, and all motion must be relative to a frame of reference. It is a notion that states’ laws of physics are the same everywhere. This theory is simple but hard to understand. It states: Albert Einstein’s Theory of Relativity…
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Explanation with an example
DC Generator works on the principle of Faraday’s Law of Electromagnetic Induction. It is a system that converts mechanical energy into electrical energy. In the above figure, A rectangular conductor width sides are placed in between a magnetic field. When the rectangular conductor rotates in between magnetics, it cuts the magnetic field thereby causing the…
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Faraday’s Law
According to Faraday’s Law, the relative motion between the magnetic field and conductor, the flux linkage changes and this change in flux induces a voltage across the coil.
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Electromagnetic Induction
We have seen what happens when a conductor is electrically charged. Now, let’s see what happens if we place a conductor in between the magnetic field. When a conductor is placed or moved through the magnetic field it generates voltage i.e., electricity. This principle is called Electromagnetic Induction. The voltages generated will be based on…
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Explanation of Electromagnetism with an Example
Permanent Magnetic speakers commonly used in TV’s and Radios are perfect examples of Electromagnetic devices. Let’s see the operation of these devices which are based on the principle of electromagnetism. See the picture below. In order to convert electrical waves into audible sound, the speakers are designed. A metal coil is attached to a permanent…