What is the Hertz?
Previously known as “Cycles Per Second,” the Hertz is a unit of measurement indicating the frequency of alteration of electric current.
How Does Hertz Relate to Light Quality?
In the United States, electricity is delivered through alternating current at a power line frequency of 60 Hz. High intensity lights such as fluorescent lights and HPS, MH, and LED grow lights all require a higher frequency of electricity in order to power up and maintain a consistent glow. When a lamp is powered by a too-low frequency, the result is flicker, which can cause eye strain and headaches. Decades of lighting technology advancements have gone into solving the problem of flicker, including the development of electronic ballasts to replace magnetic ballasts. Modern LED advancements have had the most success, thanks to the development of a built-in driver.