Harps Healy Lyon Sale Used

Posted onDecember 01, 2011 - 5:51 pm by Admin | 0 Comments

The laser beam is a highly intense and narrow parallel beam of light. The term ‘Laser’ stands for Light Amplification by Simulated Emission of Radiation. The use of this term also led to a 28-year patent lawsuit fought between Bell Laboratories and physicist Gordon Gould. The first laser was fired at the Hughes Research laboratories, Malibu, California on 16th May 1960. It was built by Theodore Maiman based on the theoretical foundation laid by Albert Einstein in his paper, “The Quantum Theory of Radiation”, in 1917. In simple terms, light energy is bounced between two mirrors at the two ends of a tube, one of which is translucent and can allow a beam to pass through it. However powerful the technology, the initial reaction of scientists to it was negative, and they called it a solution looking for a problem. The first mention of a laser-like device came up in a literary sci-fi novel by Alexei Tolstoy, “The Hyperboloid of Engineer Garin”. Measuring the power of the early lasers was done in Gillettes, that is, in terms of how many safety razor blades the laser beam could pass through. The laser beam is far hotter than the sun’s surface but when combined with a magnetic field, it can be used to cool atoms. Lasers are graded in levels 1-4, with level 4 being the most powerful and can cause burning and blindness.

The laser beam has been used in tens of films and is used by dentists to remove rot without causing any pain. Lasers are used extensively for surgical procedures including tattoo removal. They make the surgery bloodless since the heat from the laser beam cuts and cauterizes simultaneously. Lasers facilitate the derivation of DNA sequencing with only one molecule. Laser eye treatment helps rectify vision problems. The first laser eye treatment on human beings was done by Dr Marguerite McDonald in 1987. The first Q-switch Laser hair remover came to markets in 1968 but safety concerns led to its withdrawal after 3 years.


→ 0 Comments

Posted in 1000 car sale