How heat raidiation work in a glass brownie pan?

Heat radiation in a glass brownie pan occurs when the pan absorbs heat from an external source, such as an oven. The glass material then emits infrared radiation, which helps to evenly distribute heat throughout the brownie batter. As the batter heats up, it cooks from the outside in, allowing for a uniform baking process. The transparent nature of glass allows some radiant heat to pass through, while still effectively retaining and conducting heat to the batter.