Lasers in nonionising radiations, Science

Assignment Help:

Lasers : Laser light is an extremely intense form of electromagentic radiation and its name is acronym for light amplification by stimulated emission of radiation. Lasers are used widely in industry and research laboratories. Their dangers stem from the enormous concentration of the energy of the laser into a very small area. These extremely short, concentrated pulses of light can cause severe eye damage. Both the cornea and the retina may be affected and permanent blind spots can be produced at the points where the lens of the eye brings the rays to a focus, thereby destroying the tissues at the back of the eye.

This focussing effect of the lens of the eye increases the intensity of the laser light by a factor of about a million (106)so low energy laser light can also be dangerous. In practice the maximum safety value is set at one-tenth of this figure. Additional dangers in the use of the laser stem from the very high voltages required to operate its source.

 


Related Discussions:- Lasers in nonionising radiations

Introduction -laws and regulations, INTRODUCTION: Here, we shall explain t...

INTRODUCTION: Here, we shall explain the regulations which are directly or indirectly concerned with laboratory work. These regulations have legal validity. As compared to laborat

What is results of recipient operation, What is Results of Recipient Operat...

What is Results of Recipient Operation ? International Society for Heart and Lung Transplantation (ISHLT) maintains data from more than 300 centres starting from 1980. Data fo

Clouds formed at the highest altitude, Which are clouds formed at the highe...

Which are clouds formed at the highest altitude: cirrocumulus

Define fats - nutritional components, Define Fats - Nutritional Components ...

Define Fats - Nutritional Components Once the body stops eating, it begins to live on its fat. Fat storing depots 'adipocytes' are located in the different parts of the body. I

Saturn, Uranus Uranus (Fig.) appears as a green disc with vague marking...

Uranus Uranus (Fig.) appears as a green disc with vague markings, even through  the largest telescopes. Its colour is produced  by  the large amounts of methane and ammonia clo

Explain factors affecting viscosity of blood, Explain Factors Affecting vis...

Explain Factors Affecting viscosity of Blood Viscosity of blood affects the systemic blood pressure in the same way as changes in the peripheral resistance.  In anaemia, viscos

Connective tissue, What is the function of the connective tissue?

What is the function of the connective tissue?

Plant Parts, Primary source from plants for humans and animals

Primary source from plants for humans and animals

Stomach, Describe the structure of the stomach. How is it modified to carry...

Describe the structure of the stomach. How is it modified to carry out its functions? How does It compare to that of the fetal pig?

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