850 Nanometers Is a Multi Mode Laser, Right?

The main thing is about attenuation. It's about the amount of loss that's in the system, right? In the cable, in the connectors, in the, all of the pieces that come together,. The difference between what you, you send and what you receive is, is the attenuation. And literally, I mean, these, this is a picture of a pair of earplugs. Those earplugs are there to attenuate sound. So they've got like a 20dB, 20 decibel reduction in the sound that's reaching your ears versus what's there without them. That's the loss that's been introduced. Okay. Now we're not talking about refraction