Explain astigmatism, Physics

Assignment Help:

Astigmatism:

In this defect the surface of eye is not perfectly spherical. The eye has different focal point in dissimilar planes and image of an object is not focused clearly on the retina.

Correction:

Astigmatism is corrected by asymmetrical lenses which have dissimilar radii of curvature in dissimilar plane.

 


Related Discussions:- Explain astigmatism

Max-well-ampere-s-law-4-quation , Normal 0 false false fal...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

S polarization, derive the equation for reflection and transmission coeffic...

derive the equation for reflection and transmission coefficient for s polarization

Nuclear and partical physics, explain in detail the construction and workin...

explain in detail the construction and working of a scientillation counter

Electromagnetic waves, Electromagnetic waves: Electromagnetic waves wi...

Electromagnetic waves: Electromagnetic waves with different ranges of frequency constitute an electromagnetic spectrum. Electromagnetic waves are transverse in nature. Visible

Explain optical interference process, Optical interference process is broad...

Optical interference process is broadly divided into two categories namely (i) division of wave front (ii) division of amplitude. Give one example for each category of interference

Diamond dosimetry, what is the working principle of diamond dosimeter and w...

what is the working principle of diamond dosimeter and whast are its advantages and disadvantages over other dosimeters?

What is action of points - corona discharge, Q. What is action of points (c...

Q. What is action of points (corona discharge)? What is its use? The seep out of electric charges from the sharp points on the charged conductor is known as action of points o

Ratio of specific charge of a proton and an alfa-particle, The ratio of sp...

The ratio of specific charge of a proton and an  alfa-particle is: (1) 2 : 1 (2) 1 : 2 (3) 1 : 4 (4) 1 : 1 Ans:(1) 2 : 1

Sievert, Sievert; Sv: The derived SI unit of dose equivalent, explaine...

Sievert; Sv: The derived SI unit of dose equivalent, explained as the absorbed dose of ionizing radiation multiplied through internationally-agreed-upon dimensionless weights,

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