A magnetic separator is a device that uses a magnet to remove impurities and other magnetic materials from metal. Magnetic separators can be used before, during, and after production of a material and can be adjusted to attract different types of magnetic materials at varying levels of intensity. Magnetic separators are used for a wide variety of applications, though their use is almost always industrial in nature. Magnetic separators can be either ferromagnetic or paramagnetic and can range in size from a tabletop version to a large, heavy drum that Read More

The Inverse Square Law is a physics law that states that a strength or quantity is inversely proportional to the square of the distance from the source of the strength or quantity. In more technical terms, a vector field divergence that is a result of the radial inverse square law fields with one or many sources, is proportional to the strength of the local sources and no outside sources. What is the Justification for the Inverse Square Law? The inverse square law applies whenever an energy, force, or conserved quantity Read More

Magnetic chalkboard paint has been used for the past decade to allow kids to be more creative at home and school. It can be used to decorate walls, tables, and just about any flat surface that can be painted. It is easy to apply and does not require professional application, making it more popular with parents who like to create activities for their children at home. Magnetic chalkboard paint does not require special tools and can be applied with traditional rollers or paint brushes. How to Apply Magnetic Chalkboard Paint Read More

True antigravity propulsion involves using a material or technological effect that counteracts the effects of gravity without using aerodynamic lift, electromagnetism, or some other balancing force. Likewise, antigravity does not refer to situations in which an object or person experiences lack of weight such as being in a pool, free fall, or high altitude orbit. Virtually all antigravity propulsion systems and experiments that scientists introduced to the public and that supposedly defied gravity could not be supported with concrete evidence. Furthermore, no third party could recreate it. This fact has Read More

Eddy currents are also referred to as Foucault currents and are created when conductors are exposed to a changing magnetic field because of a field source’s relative motion. Their applications include induction heating and non-destructive testing. Eddy currents are continually researched in order to develop new applications. How do Eddy Currents Work? Eddy currents are created when a conductor is exposed to a magnetic field that changes due to the field source’s and/or the conductor’s motion. Magnetic field variations, which create a current within the conductor’s body over time, may Read More

Luminous flux (luminous power) is the measurement of the (perceived) power of light. It is adjusted to take the human eye’s sensitivity to the different wavelengths of light into account. Luminous flux differs from radiant flux in this manner, since radiant flux is a measurement of the total power of light emitted independent of wavelength. What is the SI Unit of Luminous Flux? The unit of measurement that is associated with luminous flux is the lumen (lm). A single lumen is the amount of light that produces a single candela Read More

A buckyball is a fullerene with an ellipsoidal or spherical cage that is comprised of covalently bonded carbon atoms. This is another carbon arrangement (allotrope) type that is between graphite and diamond. The first fullerene to be discovered was C60. It was named buckminsterfullerene after Buckminster Fuller who designed well-known geodesic domes that resemble the molecule. The buckyball and other fullerenes are very strong but expensive to produce and purify. A nanotube, another fullerene variant, has similar qualities to buckyballs but are cylindrical instead of spherical. When were Buckyballs First Read More

Magnetic Permeability is a term refers to the ability of a material to gain or maintain magnetism. When certain materials are placed in a magnetic field they become magnetized.  For example, when you take a piece of iron and rub it on a substance already magnetized or a magnet, it will become magnetized and have a resulting magnetic field. What is Magnetic Permeability? Permeability is the measure of how a substance or material supports forming a magnetic field within itself. It is the amount of magnetization that the substance will adopt Read More

An anechoic chamber prevents sound, radio signals, and electromagnetic waves from echoing  in a room. Anechoic chambers often test antennas, measure the direction of sound, or record music. Anechoic chambers are found all over the world, especially in universities, and can be as large as an aircraft or as small as a car. Full-anechoic chambers that are measured at less than 0 DBA are completely silent as they absorb more sound than humans can hear. In fact, an anechoic chamber at the University of Salford in Greater Manchester, England is Read More

Xenon is a noble gas–found all the way to the right on the periodic table of elements–that is odorless, colorless and heavy. It has many different uses, but one of the biggest uses that it has is the use in light bulbs. The reason for this is because when xenon is excited, it gives off a lot of light. This light is what many car companies are beginning to put into light bulbs so that people can see better with their headlights. How Do Xenon Lights Work Because the purpose Read More