ORTHOGRAPHE ET PRONONCIATION. Our editors will review what you’ve submitted and determine whether to revise the article. How to use laser … It is focused in a narrow beam and creates a very high-intensity light. The emission generally covers an extremely limited range of visible, infrared, or ultraviolet wavelengths. Laser light, on the other hand, has a specific wavelength. A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation". It is focused in a narrow beam and creates a very high-intensity light. Ordinary light, such as that from a light bulb, has many wavelengths and spreads in all directions. Difficultés de liseré. Get kids back-to-school ready with Expedition: Learn! Medical lasers are medical devices that use precisely focused light sources to treat or remove tissues.The term “laser” stands for light amplification by stimulated emission of radiation.

Because lasers can focus very accurately on tiny areas, they can be used for very precise surgical work or for cutting through tissue (in place of a scalpel).Lasers are used in many types of surgical procedures. In addition, I heard many times that it is dangerous to point out a laser dot in someone’s eye. It takes very few resources to make a mobile phone.Articles from Britannica Encyclopedias for elementary and high school students. Laser definition is - a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating a beam of coherent electromagnetic radiation usually in the ultraviolet, visible, or infrared regions of the spectrum; also : the beam of coherent radiation itself. Some examples includeWith proper use, lasers allow the surgeon to accomplish more complex tasks, reduce blood loss, decrease postoperative discomfort, reduce the chance of wound infection, and achieve better wound healing.As with any type of surgery, laser surgery has potential risks. Laser, a device that stimulates atoms or molecules to emit light at particular wavelengths and amplifies that light, typically producing a very narrow beam of radiation. Risks of laser surgery include incomplete treatment of the problem, pain, infection, bleeding, scarring, and skin color changes.Laser surgery uses non-ionizing radiation, so it does not have the same long-term risks as x-rays or other types of ionizing radiation.Manufacturers of electronic radiation emitting products sold in the United States are responsible for compliance with the Manufacturers of surgical laser products are responsible for compliance with all applicable requirements of Title 21 Code of Federal Regulations (Subchapter J, Radiological Health) Parts 1000 through 1005:In addition, surgical lasers must comply with radiation safety performance standards in Title 21 Code of Federal Regulations (Subchapter J, Radiological Health) Parts 1010, 1040.10, and 104.11:Because they are medical devices, surgical laser products must also comply with the medical device regulations.

If a tumor is being treated, an endoscope (a thin, lighted, flexible tube) may be used to direct the laser and view tissues inside the body. Definition. Surgical and Therapeutic Products ... Medicine, surgery, and health.

By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Le laser est une technologie qui a de multiples applications dans le domaine médical. Laser medicine consists in the use of lasers in medical diagnosis, treatments, or therapies, such as laser photodynamic therapy, photorejuvenation, and laser surgery. For more information, see Laser therapy techniques vary based on the procedure. An official website of the United States government: Laser light, on the other hand, has a specific wavelength. Nous vous proposons de découvrir les diverses utilisations du laser en médecine et les avantages de cette technique chirurgicale., par Audrey In my opinion, the laser technology comes from focusing photons of lights on a single spot and such approach makes it more powerful than a beam of light. Les deux graphies, liseré et liséré, sont admises.La graphie liseré correspond à la prononciation la plus usuelle avec un e intérieur (qui souvent n'est pas articulé :) ; liséré, avec deux accents aigus, est la forme recommandée par l'Académie dans la 8e édition de son Dictionnaire.

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