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

Explain motion of simple pendulum, Motion of simple pendulum. Simple Ha...

Motion of simple pendulum. Simple Harmonic Motion:  It is a type of vibratory motion in which body has an immediate acceleration whose magnitude is directly proportional to the

Project, i want to make a project of electromagnetic induction

i want to make a project of electromagnetic induction

Define isothermal process, Define isothermal process For isothermal pr...

Define isothermal process For isothermal process temperature remains constant i.e.  Δu = 0.  Thus according to first law of thermodynamics ΔQ =Δw Heat supplied to the syste

Upthrust, Does upthrust change in different liquids (examples please)

Does upthrust change in different liquids (examples please)

Tools for performance measurement in parallel algorithm, After the parallel...

After the parallel algorithm has been written as well as executed performance of both algorithms is one of other main concerns. In order to examine performance of algorithms there

Time dilation, A spacecraft is moving relative to the earth An observer on ...

A spacecraft is moving relative to the earth An observer on earth finds that , according to her clock 3601s elapse between 1pm and 2pm on the spacecraft''s clock. what is the space

From which energy level did the atom fall, An electron in the hydrogen atom...

An electron in the hydrogen atom loses 3.02 eV as it falls to energy level E 2 . From which energy level did the atom fall?

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