Guide to Trash Bag Sledding Fun

Does this make sense? It's just like how red plastic filters block blue light but let red light through. And vice versa. The difference is we can't see infrared light with our human eyes. That's why we can't see through the black trash bag unless we use an infrared camera. I originally uploaded a version of this video which erroneously claimed that polyethylene was opaque to infrared instead of the carbon black added to it during manufacturing. #jigglephysics #infrared #thermalcamera #xray