Magnetic propulsion is the act of moving an object with magnetic fields and a flowing electrical current. The current is used to manipulate the system’s magnetic field or charge a fluid in the system that can be repelled. The Lorentz force then pushes the conductor in a direction that is perpendicular to the magnetic field …
Traffic lights are basically signalling lights placed at crossroads or turning-points to regulate the flow of vehicular traffic. This system is of utmost importance specially in populated traffic zones to avoid accidents and human casualties. That is most cities deploy traffic signals on every road. Less traffic oriented areas in villages and country side may …
Hoverboards in movies are fictional, but there are actual hoverboards — though they are not the size of a skateboard. Hoverboards are simple contraptions that allow the user to travel without parts that would roll over the ground. Hoverboards are an offshoot of the hovercraft. The hovercraft (also known as air-cushion vehicle or ACV) is …
The transmission electron microscope (TEM) is a scientific instrument that uses electrons instead of light to scrutinize objects at very fine resolutions. They were developed in the 1930s when scientists realized that electrons can be used instead of light to "magnify" objects or specimens under study. TEMs provided a means to go beyond the magnification …
A common law enforcement practice known as "speed traps" or "speed trapping" is based on one universal factor: Almost everyone speeds. Everyone has their reasons but most people speed on occasion just because they can. While this excessive acceleration is usually harmless as drivers have enough time to slow down during emergencies, many fatal car …
The planet Mars has held a place of intrigue with humanity for many centuries. Also known as the “Red Planet,” Mars can be seen with the naked eye and looks red due to the large red desert covering its surface and the presence of a large amount of ferric oxide. As the fourth planet in …
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. …
A driverless car (also autonomous/autopilot/auto-drive car) refers to a car that does not need human intervention to function. The first driverless car achieved a maximum speed of 20 miles-per-hour and was built by Tsukuba Mechanical Engineering Laboratory in 1977. The Mercedes Benz robot van built during the 1980s achieved a full speed of 60 miles-per-hour …
Potassium carbonate dihydrate (K2CO3.2H2O) is a white chemical. Salt from potassium carbonate and water from the dihydrate are mixed into a deliquescent (wet salt). It is a strong alkaline solution that garners a variety of uses. The salt tastes like salt and alkaline material. Potassium carbonate dihydrate is generally used as a nutritional supplement in …
Interferometry is a series of techniques that uses a series of superimposed electromagnetic waves to extract data and other insights regarding the waves. The device used to measure the waves is an interferometer. Interferometry is primarily used in the fields of fiber optics, engineering metrology, optical metrology, seismology, oceanography, astronomy, particle and nuclear physics, quantum …