So I noticed something interesting last night. I was in the cellar to check airlocks on four wines that I’m bulk aging and I was messing around using my infrared thermometer to check surfaces in the cellar (I use supplemental heat in the winter). In the past I noticed that the red laser penetrated through my apple wine but not through a three-gallon carboy of beet wine that is dark red. Well last night it went through like it wasn’t even there! Apparently it cleared recently. If you shine a flashlight through the carboy it’s still hard to judge but that laser light penetrates and shines right through. Same with the elderberry, but the wild grape absorbs the beam completely.
I looked closer and you can actually see a difference in the beam as it shows up on the wall behind the carboy and see the difference in back scattering along the path of the laser inside the carboy. You can actually judge how clear it is. I’m sure they use light scattering in the industry but it was cool to see it and now I have a new use for my cheapo Harbor Freight $20 thermometer.
I looked closer and you can actually see a difference in the beam as it shows up on the wall behind the carboy and see the difference in back scattering along the path of the laser inside the carboy. You can actually judge how clear it is. I’m sure they use light scattering in the industry but it was cool to see it and now I have a new use for my cheapo Harbor Freight $20 thermometer.