Java Games: Flashcards, matching, concentration, and word search.

Optical Formulas

Practice your math skills. Practice metric conversions, transposing, spherical equivalent,vertex distance-effective power and Prentice's Rule. Also included is focal length.

AB
Convert 5 meters to millimeters5000mm
Convert 2 meters to Centimeters200 centimeters
Convert 50 centimeters to millimeters500 millimeters
Convert 2.45 millimeters to meters.00245 meters
Convert 4.5 centimeters to millimeters45. millimeters
1 meter equals how many inches1 M = 39.37 inches
Convert 2 meters into inches78.74 inches
How many inches are there in 1/2 meter?approximately 20 inches
How many inches long is a 120mm temple4.72 inches
My computer monitor is 30 inches away from my face. How many meters is this?.76meters You need to divide 30 into 39.37 to get the ansewer
Convert 2500 millimeters to meters2.5 meters
Transpose the following prescription into minus cylinder. -3.00 +3.00 x 180plano -3.00 x 90
Transpose the following prescription into minus cylinder. -4.50 +2.00 x 90-2.50 -2.00 x 180
Transpose the following prescription into minus cylinder+2.75 -2.75 x 150
Transpose the following prescription into plus cylinder -2.50 -2.00 x 50-4.50 +2.00 x 160
Transpose the following prescription into minus cylinder -4.50 +2.00 x 160-2.50 -2.00 x 50
Transpose into plus cylinder -1.50 -1.50 x 78-3.00 +1.50 x 168
What is the spherical equivalent of the following prescription -2.00 -1.00 x 90-2.50 You determine the spherical equivalence by taking half the the cylinder and adding it to the sphere. Algebra rules apply
What is the spherical equivalent to the following prescription +4.00 -3.00 x 125+2.50
What is the spherical equivalent of the following prescription -3.75 sphere-3.75 sphere
What is the spherical equivalent of the following prescription -1.25 +1.25 x 160-.62
What is the spherical equivalent of the following prescription +2.00 -3.00 x 025+.50
If a lens has a focal length of 2 meters-What is it's dioptric power?.5 Diopters
If a lens has a focal length of 2.5 meters, What is it's diptric power?.4 diopter
If a lens has the focal length of 100 centimeters, what is it's dioptric power?.1 diopter
If a lens has the focal length of 40 inches, what is it's dioptric power?1 diopter
What is the focal length of a 10 diopter lens?.1 meter
What is the focal length of a 2 diopter lens?.5 meter
What is the focal length of a 4 diopter lens?.25 meter
What is the focal length of 1 diopter lens?1. meter


laurie Zielinski

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