subject: What you Need to Know about the Faraday Cage [print this page] What you Need to Know about the Faraday Cage
Faraday Cage is called as such because of the person who discovered it, which is no less than scientist Michael Faraday. But what is it and what are its uses? Basically, Faraday Cage is an enclosed space that is responsible for keeping electromagnetic radiations to ingress and egress. Although this concept seem alien to most people, it has a wide range of applications in modern times that make it one of the most important invention in the modern century.
The concept of Faraday cage was attributed to 19th century scientist Michael Faraday who is best known for his work on the study of electromagnetic energy. This invention was made possible by his interest in Benjamin Franklin's works, such that he was able to devise his own theory. According to his theory, all conductive materials have a flow of electromagnetic waves found on its surface, instead of through them. This is where he based on the Faraday cage that will later on move on to become one of the most extensively used theories in modern times.
The Faraday cage was invented in 1836 and the cage itself consist of wire or mesh to form that metallic enclosure. It is important that the shell closes on the entire area for maximum results.
Basically, a Faraday cage is intended to provide shield from the potential effects upon exposure to electromagnetic energy. For instance, the metal frame of a vehicle acts as the Faraday cage such that the passengers inside the vehicle are not shocked by electricity in case it is hit by lightning during a thunderstorm. Another example is the door of the microwave oven, which features a screen that maintains electromagnetic energy to stay within the oven and keep it from spreading onto the room. Other modern applications of the Faraday cage concept include electronic parts in radio frequencies and rebar or lead found in concrete buildings.
There are also numerous applications for Faraday cage in electronic labs, which helps to protect anyone from unwanted electric field. This is very important for labs that utilize sensitive wireless equipments and Faraday cage is often used to prevent external interference. Other modern devices that employ this concept are computer monitors and CRTs, which also prevent hackers from accessing information that are shown on these devices.
It would be unusual for consumers to seek or ask for a Faraday cage when buying electronic consumer products. However, little do they know that engineers and manufacturers have already studied the use of electromagnetic shielding in these devices to ensure that the consumers are protected while using them. It is a must to install shielding whenever sensitive electronic parts are used during manufacture, which includes grounding wire, capsules, or metal shells. This will therefore protect users upon prolonged exposure to the device and prevent harmful effects of electromagnetic energy.
Indeed, the concept of the Faraday cage is quite common and has widespread application despite the fact that some people might not even understand what it is. Hopefully, with this knowledge, you'd be able to come to appreciate this invention and its application in modern times.
