Ultra Violet light or UV rays is an electromagnetic radiation naturally emitted by the sun. It is also radiated by specially created light like the black light. The UV wave length is shorter than the visible light. A UV wavelength determines how long the wavelength of a particular light is. It is measured in nano…
A magnet is an object which creates a magnetic field around it. The characteristics of the magnet determine the weak to the strong fields of the same around it. Magnets can be categorized into two parts which are as follows: • Permanent magnets: They are magnetized and would remain magnetized for the lifetime. • Electro…
The principle used to generate electricity came into existence during the late 1820 and the early years of 1830. The principle was discovered by Michael Faraday. The basic method that he invented is still used today. His principle stated that electricity is generated when there is a movement of a loop wire or copper disc…
Electrical resistance is the resistance to the flow of electrical current. This theory was discovered by George Ohm in the 19th century. Resistance is measured in ohms. Electricity is nothing but electrons flowing. In an electrical current, the atoms in the material allow the flow of electrons. If there is poor conductivity it means that…
Sound travel through mechanical waves. These waves are nothing but a disturbance that moves. As they move, they transfer energy from one source to another. Generally the disturbance caused in sound is due to a vibrating object. You hear your own voice because the diaphragm in your throat vibrates. Medium of sounds There are various…