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

Stationary on inclined plane, A metal rod of mass 10 g and length 10 cm is ...

A metal rod of mass 10 g and length 10 cm is placed on a smooth 60 degree incline. A uniform magnetic field B is applied in the region vertically downwards . If a current of 3 A is

Is soccer balls go faster in the air on a cold or hot day, Q. Illustrate th...

Q. Illustrate that soccer balls go faster in the air on a cold or hot day? Answer:- On a hot day the air molecules have additional kinetic energy they move around more fre

Explain the vector addition of velocity, Explain the Vector Addition of Vel...

Explain the Vector Addition of Velocity Of course the velocity is relative to how you indicate the position d. If you are moving in water that is itself moving, then your full

Electric potential, is the surface of a conductor is equipotential

is the surface of a conductor is equipotential

Gradient, how to find the gradient of factors with x and y

how to find the gradient of factors with x and y

Electrostatics , why it is not possible to charge one object by rubbing wit...

why it is not possible to charge one object by rubbing without charging another object by rubbing

Find the resistance r in the circuit, The current is an RL circuit drops fr...

The current is an RL circuit drops from 1.1 A to 13 mA in the first second following removal of the battery from the circuit. If L is 12H, find the resistance R in the circuit.

Condition for diffraction, Why diffraction can't occur if slit width is les...

Why diffraction can't occur if slit width is less than the wavelength of the light? Can you explain?

Work-energy theorem, In whole analog to the work energy theorem for the tra...

In whole analog to the work energy theorem for the translator motion, it might be stated for rotational motion as:  Δ W rot =  K rot The net rotational work given by the force

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