speaker The term speaker is a diminution of loudspeaker. The full word is now so rarely used, some catalogs do not recognize it as a search term. This encyclopedia acknowledges contemporary usage by using speaker rather than loudspeaker. A fully assembled consumer product can be referred to as a “speaker,” but it also contains one […]
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Einstein’s Achievements
speaker:What It Does,How It Works,Construction,Multiple Drivers,Venting,Resonance,Miniature Speakers,Variants,Electrostatic Speaker,Powered Speakers and Wireless Speakers.
speaker The term speaker is a diminution of loudspeaker. The full word is now so rarely used, some catalogs do not recognize it as a search term. This encyclopedia acknowledges contemporary usage by using speaker rather than loudspeaker. A fully assembled consumer product can be referred to as a “speaker,” but it also contains one […]
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Dispersion and color: Newton’s experiments
It had been known for centuries that small fragments of colorless glass and precious stones glittered in bright colors when white light passed through them, but it was NOT until the middle of the seventeenth century that Sir Isaac Newton investigated the problem systematically. Newton’s work on this subject arose out of the need […]
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Electromagnetic waves illustration: Origin and sources
Electromagnetic waves When the wave theory of light first gained general acceptance it was considered that light waves were conveyed through a transparent elastic medium which filled the whole of space, even a vacuum. This substance was called the ether. Michael Faraday’s move A further step forward was made in 1845, when Michael Faraday showed […]
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How the wave Nature of light was first discovered
Strong evidence for the wave theory of light First, we need to know: Interference When two ball-ended dippers are attatched to the vibrator of the ripple tank, two sets of circular ripples are sent out which pass through one another as shown in the image. Where the two waves are superposed in the same phase, […]
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Einstein’s unified field theory , and some of his early works
Einstein’s unified field theory: A simple general law combining the four forces of nature (the electromagnetic force, gravitation, the strong force, and the weak force) : 1. An electromagnetic force is exerted between electrical charges and magnetic fields. 2. Gravitational force is related to mass and acceleration and can affect electromagnetic radiation. 3. […]
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Quantum Physics Parallel Universe
The food we eat, different people, stars, grains of sand; all come together to form the world we know. In this world, we are all truly unique and action we take has unique implications. However, if we go by the parallel universe theory we exist in more than one universe taking different actions with different […]
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The unit of work and energy was named after him: James Prescott Joule
About James Joule James Prescott Joule James Prescott Joule (1818–1889), Scotland. James Prescott Joule was one of five children in the family of a well-to-do brewery owner. Since he was a sickly child with a spinal deformity, both he and his brother were educated at home until the age of 15 and later by […]
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Newton’s law of universal gravitation vs Einstein’s principle of gravity
Gravitational force The force of which we are constantly aware in our daily lives is that which pulls us towards the earth. This is called gravitational force. Sir Isaac Newton came to the conclusion that gravitational force exists between all bodies. Thus, two stones are not only attracted towards the earth but also attract […]
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Derivation of Kinetic energy formula and worked examples
Where there are no opposing forces, a moving body needs noforce to keep it moving with a steady velocity ( Newton’s first law of motion ). If, however, a resultant force does act on a moving body in the direction of its motion, then it will accelerate ( Newton’s second law of motion ) […]
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