What unit measures the rate at which energy is delivered in laser therapy?

In laser therapy, the unit that measures the rate at which energy is delivered is Watts. This is because Watts represent power, which is the amount of energy transferred or converted per unit of time. When discussing a laser's output, it is essential to understand that power affects the tissue interaction and effectiveness of the treatment.

For instance, a higher wattage indicates that more energy is being supplied over a shorter period, which can lead to more significant thermal effects in the tissue. This is crucial for practitioners to determine the appropriate settings for laser treatments, as different therapeutic purposes may require different power levels.

Joules, while relevant for measuring total energy delivered over time, do not provide immediate information about the delivery rate. Hertz, on the other hand, measures frequency and is not applicable in this context, while Volts measure electrical potential and are also unrelated to the rate of energy delivery in laser therapy. Thus, Watts is the most pertinent measure for this specific application.