Closed surface in three-dimensional space through which the flux of a vector field is calculated; usually the gravitational field, the electric field, or magnetic field
closed surface in three-dimensional space through which the flux of a vector field is calculated; usually the gravitational field, the electric field, or magnetic field (en)
משטח סגור במרחב שדרכו מחושב השטף של שדה וקטורי (iw)