My empty tCheck tray results in a measurement

Jan 3, 2025

By Peichen Chang

tCheck assumes that there is some liquid in the tray during measurement and measures the darkness of the liquid. Liquids in the tray act as a lens and direct more light onto the sensors than air. This is a little like looking through an empty jar versus a jar filled with water. The filled jar magnifies the image slightly because of the way light bends through the water.