In this formula, the variable and the constant must be represented in the same unit of measure in order for the answer to be correct without conversion: Examples: A lens with a focal length of 1 meter would have a power of... 1/1 meter = 1.00 Diopters A lens with a focal length of 2 meters would have a power of... 1/2 meters = .50 Diopters A lens with a focal length of half a meter (0.5) would have a power of... 1/.5 = 2.00 Diopters The above formulas can be used on both minus and plus (concave and convex) lens calculations.
(the constant; must be represented; L:in the same unit of measure; to be correct without conversion) (The above formulas; can be used; L:on both minus) (the variable and the constant must be represented in the same unit of measure in order for the answer; to be; correct)
the constant The above formulas the variable and the constant must be represented in the same unit of measure in order for the answer
must be represented can be used to be
L:in the same unit of measure to be correct without conversion
L:on both minus
correct