Precautions in lasers nonionising radiations, Science

Assignment Help:

Precautions : The following must always be observed while dealing with lasers.

1) Never look along a laser beam or expose any part of your skin to it. Beware of reflected laser radiation. (Any surface which reflects light will also reflect a laser.)

Block out any reflected laser light with opaque matt grey screens.

2) Always wear the correct type of goggles for the particular laser being used. A helium-neon laser, for example, gives a red beam, and some lasers generate radiation in the ultraviolet and infra-red regions of the spectrum as well as producing visible light.

Never operate lasers in the dark. The room should always be brightly lit to avoid enlargement of the pupil of the eye.

Warning notices should be set up and the working area should be fenced off.

The laser source should be fixed rigidly to a bench so that the direction of the beam is not altered by accidental movement.

Never align a laser while it is switched on. This alignment should be carried out optically before turning on the source.

Keep laser instruments in a securely locked store room when they are not in use.

 


Related Discussions:- Precautions in lasers nonionising radiations

Ptolemaic system, The Ptolemaic System: The theoretical n'mdel of the u...

The Ptolemaic System: The theoretical n'mdel of the universe given by the Greeks had a stationary Earth at its centre, around which the Sun, the Moon and the planets moved in c

Describe about the term - inorganic phosphorus, Describe about the term - ...

Describe about the term - inorganic  phosphorus The large quantity of carbon dioxide evolved during organic matter decomposition is thought to be important to the release of ce

Objectives laws, Objectives While undertaking this exercise and after i...

Objectives While undertaking this exercise and after its completion, you should be able to: share with your peer group, the relevant information1 knowledge/opinions with regard

The fume cupboard to handling of chemicals, The Fume Cupboard : If a react...

The Fume Cupboard : If a reaction uses or produces harmful gases, dusts or vapours, it poses a risk of inhalation. Such reactions should be carried out not on an open bench but in

Causes of fire and fire hazards, Causes of Fire :  The potential fire risk...

Causes of Fire :  The potential fire risk arises from the presence of combustible solids, liquids or gases in conjunction with ignition sources. One or more class is generally fou

What is the earths core made of, What is the earths core made of? Ans) ...

What is the earths core made of? Ans) The outer earth core is liquid and the inner is solid. Both parts are of alloy of two metals - iron and nickel, permitting the rise of the

Keep acid/base concentration of blood constant - kidney, Keep acid/base con...

Keep acid/base concentration of blood constant - Function of Kidney Keep the acid/base concentration of the blood constant and regulate the blood-pressure. Renin, an enzyme- li

Explain physical barrier for external defence mechanism-skin, Explain physi...

Explain physical barrier for External Defence Mechanism - Skin It provides nice protective covering to the body.  The outer layer- horny layer - contains dead keratinized cells

AVES, classes of aves

classes of aves

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd