The different ways to measure light and what measurements are good for indoor growing.

How Light Intensity is Measured

Evaluating the Quality of a Grow Light Using Spectrum

What is a Spectral Distribution Chart and How to Read It

Lighting Terms to Ignore

Fixture Uniformity and How to Measure It

The McCree Curve

What is PAR?

Why PAR Doesn’t Matter

Sections of a Spectrum and What They Do for Plants

Understanding Light Intensity

What is PBAR and PBF?

What is PPF?

What is a Photon?

Light Meters and What They Are Used For

What is PPFD and PBFD and How Are They Measured?