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Physics

Lens Power Calculator

Physics

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Lens Power

Equation and meaning

\[P = ( ( 1 ) / ( ( f \cdot ( meter ) ) ) )\]

Lens Power Where : P is the Power In Diopter,f is the Focal Length in Meter,

Variables in this formula

f — F
Enter this value unless it is the selected unknown.
meter — Meter
Enter this value unless it is the selected unknown.
P — Power
Power SI unit: W

How to use this calculator

  1. Leave one value emptyThe empty field is automatically treated as the unknown.
  2. Enter known values and unitsChoose N, kgf, dyn, SI or another compatible unit when available.
  3. Review the automatic answerThe result appears immediately and is substituted back into the formula to check the residual.
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Mathematics

2D-Distance Formula

Mathematics

\[d = sqrt ( ( ( ( ( x_1 ) - ( x_2 ) ) ) ^ 2 ) + ( ( ( ( y_1 ) - ( y_2 ) ) ) ^ 2 ) )\]
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3D Distance

Mathematics

\[d = sqrt ( ( ( ( ( x_1 ) - ( x_2 ) ) ) ^ 2 ) + ( ( ( ( y_1 ) - ( y_2 ) ) ) ^ 2 ) + ( ( ( ( z_1 ) - ( z_2 ) ) ) ^ 2 ) )\]
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Ampere's Law

Physics

\[\phi = B \cdot dl\]
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Angle of Deviation

Physics

\[\delta = i - r\]
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Angular Momentum

Physics

\[L = I \cdot \omega\]
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Apparent Depth

Physics

\[d_{prime} = \frac{d}{\mu}\]
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