Category: Physics

What is the principle of DC generator *? DC generator operates on the principle of the dynamically induced electromagnetic force. When a conductor is placed in a varying magnetic field, an electromotive force gets induced within the conductor. This induced e.m.f magnitude is measured using the equation of the electromotive force of a generator. What […]

How is electrical energy formed? Electrical energy is caused by moving electric charges called electrons. In power stations, turbines are turned using energy from sources such as heat, wind and moving water. Generators are machines for converting motion energy into electricity. What holds the most energy? Sorbothane® has been recognized as the highest performance, energy-absorbing […]

What are the purpose and effects of the parasympathetic nervous system? The parasympathetic nervous system is responsible for the body’s rest and digestion response when the body is relaxed, resting, or feeding. It basically undoes the work of sympathetic division after a stressful situation. The parasympathetic nervous system decreases respiration and heart rate and increases […]

Why do electrons have spin? Because electrons of the same spin cancel each other out, the one unpaired electron in the atom will determine the spin. There is a high likelihood for either spin due to the large number of electrons, so when it went through the magnetic field it split into two beams. What […]

Whats a rhizome look like? Technically, a rhizome is a stem that grows underground. It usually grows horizontally, just below the soil’s surface. This means a patch of what looks like several individual plants grouped near each other may actually all be shoots of the same plant, put up by the same rhizome. How do […]

What is the ratio of calcium to fluoride ions? How many calcium ions like inside the unit cell? The structure as a whole is electrically neutral and thus the unit cell must be electrically neutral. Therefore Ca2+ and F- ions must be present in a 1:2 ratio. Is there any other ratio of zinc and […]

Do you really need noise Cancelling headphones? Are noise-cancelling headphones worth it? Yes. If you wish to protect your hearing, reduce environmental distractions, and enjoy a better audio experience, then this technology will surprise you with its impactful results. Is Noise Cancelling safe? So, Is Noise-Canceling Safe? The short answer is, yes. Noise-canceling headphones, on […]

What does a map scale of 1 to 25000 mean? There is a standard ratio format for map scales e.g. “1: 25,000”. The first number is the unit on the map and the second number is the distance in real life of the same unit so 1: 25,000 means that 1cm on the map corresponds […]

What is a good sample size? A good maximum sample size is usually 10% as long as it does not exceed 1000. A good maximum sample size is usually around 10% of the population, as long as this does not exceed 1000. For example, in a population of 5000, 10% would be 500. In a […]

What are the applications of soft and hard magnetic materials? They are used in electrical rotating machine, electromagnet, electrical machine and transformer. It is used in communication equipment such as audio transformer, recording heads and magnetic modulators because of high initial permeability in feeble fields. They also possess low hysteresis and eddy current losses. Which […]