I dont mean using paper thoughSolid steel plates and a ridiculously powerful wind tunnelThe experiment where you blow air across the top of paper and the paper rises due to lower air pressureSo if you had a super powerful wind tunnel and instead of paper used a sheet of aluminum or steel how large could we build an experiment like this?
An aircraft wing is based on this principle, so that is a large exampleBut one could be built much larger as it doesn't need to flyMajor limit would be money.
