This image is released under a CC BY-NC-SA 4.0 Licence
Buy this image as a print
License this image for commercial use at Science and Society Picture Library
Model showing a pair of cones enveloping a sphere and a plane Science Museum Group © The Board of Trustees of the Science Museum
Model showing a pair of cones enveloping a sphere and a plane, tangential to them, also a method of drawing a plane at given inclination to the co-ordinate planes