Inverse Square Law Calculator

Enter 3 of the following 4 values into the calculator; initial radiation intensity, final radiation intensity, initial distance, final distance. The calculator will solve for the missing value.

Inverse Square Law Formula

The following formula is used to calculate the values in an inverse square law.

I1 / I2 = d2^2 / d1^2

  • Where I1 is the initial radiation
  • I2 is the final radiation
  • D2 is the final distance
  • D1 is the initial distance

What is the inverse square law?

The inverse square law states that any physical quantity is proportional to the square of the distance from the source of the physical entity.

inverse square law calculator

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