Enter the frequency of the red light (hz) into the calculator to determine the Red Light Energy. 

Red Light Energy Formula

The following equation is used to calculate the Red Light Energy. 

E = h*fr

Variables:

  • Where E is the Red Light Energy (Joules)
  • fr is the frequency of the red light (hz) 
  • h is the Planck’s Constant (6.626 * 10 ^-34 J-s)

To calculate the red light energy, multiply the frequency of the red light by the Planck’s Constant.

How to Calculate Red Light Energy?

The following two example problems outline the steps and information needed in order to calculate the Red Light Energy.

Example Problem #1:

  1. First, determine the frequency of the red light (hz). In this example, the frequency of the red light (hz) is measured to be 40000.
  2. Finally, calculate the Red Light Energy using the formula above: 

E = h*fr

Inserting the values from above and solving the equation with the imputed values gives: 

E = 6.626 * 10 ^-34*40000 = 2.65e-29 (Joules)

Example Problem #2: 

Using the same process as example problem 1, we first define the needed variables outlined by the formula. In this case, the values are provide as: 

frequency of the red light (hz) = 2000

Entering these values into the formula or calculator above gives us: 

E = 6.626 * 10 ^-34*2000 = 1.3252e-30 (Joules)