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

Expanding universe, The Expanding Universe: Hubble's observations had...

The Expanding Universe: Hubble's observations had proved  the existence of  galaxies. After mapping as many galaxies as could be seen by  the telescopes then'available, he tu

Demonstrate the crystal structure of clays, Crystal Structure of Clays  ...

Crystal Structure of Clays  Most clay minerals have two types of basic structural units  - tetrahedral and octahedral.  The tetrahedral unit is 4- 4  SiO  in which silicon

A&P, Most of the plasma is composed of?

Most of the plasma is composed of?

Advantages of water in chemical weathering, Advantages of water in chemical...

Advantages of water in chemical weathering Water is an essential factor of chemical weathering  and when it contains dissolved salts and acids it is all the more effective. It

Objectives for stock verification and maintenance , Objectives : After com...

Objectives : After completing this exercise you should be able to check the stock register, 1. verify the physical presence of articles present in the lab as per the stock regi

Explain general structural plan of gastrointestinal tract, Explain General ...

Explain General Structural Plan of the Gastrointestinal Tract The wall of the gastrointestinal tract consists of four layers of tissue. These are: Adventitia or outer co

Quiz, I have a vocabulary quiz tommorrow! WHat am I supposed to do

I have a vocabulary quiz tommorrow! WHat am I supposed to do

Reflexes, Reflexes: It is of  interest  to know,  that all sensory in...

Reflexes: It is of  interest  to know,  that all sensory information does not have to go to the  -  brain before we can react to a stimulus. Our responses to certain stimuli

Explain haemopoietic function, Explain Haemopoietic function Gastric ju...

Explain Haemopoietic function Gastric juice contains the intrinsic factor, which is essential for the absorption of vitamin B 12 . Vitamin B 12 present in food combines with i

Sleeper Sharks, I need to fine the role and the importance of the Sleeper S...

I need to fine the role and the importance of the Sleeper Shark to an ecosystem.

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