The equator of a n-sphere is (n-1)-sphere. Then the equator of a 3-sphere is a 2-sphere. Does this mean the meridian of a 3-sphere is a hemisphere (half 2-sphere)? In contrast, Wikipedia describes the meridians as 1-dimensional curves here: http://en.wikipedia.org/wiki/3-sphere
Also, how does one visualize the meridians of the 3-sphere? Naturally, this will involve stereographic projection, but it will be very good to see details and images (videos would be great!).
Is there a good book one can have that deals in good details with the meridians of the 3-sphere?
Many thanks.