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DioptreA dioptre, or diopter, is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, 1/metres). For example, a 3 dioptre lens brings parallel rays of light to focus at 1/3 metre. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. The term was proposed by French ophthalmologist Felix Monoyer in 1872

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Related Questions

What unit is used to express power?

The unit to express power is YOUR MOMMA


What is the unit to express power is the?

the unit used to express power is time


The unit used to express power is called?

The unit used to express power is called the watt (W). Power is the rate at which energy is transferred or converted.


What unit is used to express the power of spectacles?

DioptreA dioptre, or diopter, is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres (that is, 1/metres). For example, a 3 dioptre lens brings parallel rays of light to focus at 1/3 metre. The same unit is also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. The term was proposed by French ophthalmologist Felix Monoyer in 1872


What SI unit is used to express power?

the answer for the si unit of power is the watt or w


How can you express the equation for power?

It is the amount of energy consumed per unit of time.


Is zero power spectacles are good for eye?

No


the unit used to express powers is what?

the unit used to express power is time


Where do you get spectacles of power in monkey quest?

from the pizza parlour


What service does Vision Express UK provide its customers?

Vision Express UK is one of the three major operators which dominate 60% of the British retail market for spectacles and contact lenses. Therefore, the main service Vision Express UK provide its customers is eye exams, contact lens assessments, spectacles dispensing.


What unit is used to express electrical power?

Electrical power is also measured in Watts.


What are unit conversions for?

Unit conversions express an amount in a different unit