👉 Actinometry is a branch of optical technology that deals with measuring the size and shape of light rays. It involves measuring how far apart or close together these rays are, which determines their intensity and polarization.

actinometry

👉 Actinometry is a term used to describe a type of physical activity where participants move their bodies through a specific set of steps over a long period of time, typically about 20-30 minutes. This method has been gaining popularity in recent years due to its perceived benefits for both mental and physical health.

Here's an example sentence: "Hey everyone, I just finished the actinometry class we were supposed to take. It was intense but very rewarding! The instructor was so into his job, it made you feel like a real athlete on the go."