My problem is this:
I'm looking into generation of artificial gravity in a micro-gravity environment (space) but there are a couple of things I needed answered
a) What 'gravity gradient' can the human body tolerate (i.e. the difference in force applied to their head and force applied to their feet)
b) I've heard that high rotation speeds can cause sickness due to the inner ear - why is this? How does your body even know it is spinning without a frame of reference?
Thanks for your help!