20th of April 2010 0
If you had ever thought what was the specialty of noble gases being use in neon lights and why not other gases… here we have the answer for you. It all started during the late 1800’s. Many physicists and mainly Sir William Crookes began their experimentation to observer and analyze what radiations are produced in evacuated tubes in which a small amount of elemental gases were let in, during which an arc was struck between electrodes inside the evacuated tube containing a little amount of elemental gas. Surprisingly the physicists observed that a lot of wide-ranging colored effects came out depending on what gases were introduced. Only after 1910 the first proper functional application of elucidating signs became came into existence. The French Physicist, Claude Georges invented the first neon light and chose to take neon as the filling. The important thing in this process to note is that following right pressure and voltage is responsible for the resultant deep red color glowNow here we have to see how noble gases were used in the creation of neon lights and neon sign boards. The two most general and most commonly found plasma devices used is the fluorescent light bulb and the almost similar neon sign. In view of the fact that their growth in the 1940’s, fluorescent bulbs have become the lighting fixture of alternative in commercial centers, factories, schools and many other places as they are starting to be establish more extensively in residence areas as well.In most of the cases, the light produced from the fluorescent light bulbs look white. Guess how this white color comes? This white color is a mixture of all of the colors of the visible spectrum, just like how it works with sunlight.When it comes to the fluorescent bulb, the matter that is in fact responsible for the glowing is a white colored powder that is applied to the inner wall of the bulb’s long glass tube. This powder is nothing but the phosphor. Even though it may not have any phosphorus in it, it gives the white light we see through a process which is known as fluorescence. This is the process which is the foundation of the given name as the ‘fluorescent’ light bulbs. The process of fluorescence takes place when an atom or molecule attracts and keeps inside the energy from some the source, for example a photon of light, or a collision with another atom. Followed by this an amount of energy is on the loose and discharged in the form of light in two or more successive steps of reaction.