How is energy calculated according to the given formulas?

Energy is calculated by multiplying power by time. This is grounded in the fundamental physics concept where energy (measured in joules) is the product of the power (measured in watts) and the duration of time (measured in seconds) for which that power is exerted. In essence, when power is applied over a period of time, the total amount of energy utilized or produced can be determined by this multiplication.

Understanding this concept is crucial in various applications, including those related to laser therapy, where energy delivered affects the therapeutic outcome. When dealing with lasers, knowing how to quantify energy transfer can assist practitioners in delivering effective treatment protocols. In this context, the relationship between power and time helps clinicians to correctly set parameters for their laser devices to achieve the desired therapeutic effects.