Weightlessness
Can anyone offer me some assistance in answering a question that has bugged me for a while:
I'm military aircrew and as such have had the pleasure of doing a lot of aerobatic flying as part of the training, a lot of which involving some period of 0G flight. Under these conditions (as I'm sure some of you will know) you simply feel like you're floating. However, roller coasters and fairground attractions that subject people to 0G are accompanied by a feeling of stomach being left behind! Can anyone explain how supposedly very similar experiences produce such different reactions?