The fourth dimension
162 THE FOURTH DIMENSION
colours white, yellow, red, blue, to denote transferences in
each of the four directions—right, away, up, unknown or fourth dimension.
Hence, as the plane being must represent the solid re-
gions, he weuld come to hy going right, as four squares lying
in some position in
his plane, arbitrarily
chosen, side by side with his original four squares, so we must represent those eight
four-dimensional re-
gions, which we
Fig. 99, should come to by
A plane being’s representation of a block going in the fourth
of eight cubes by two sets of four squares. dimension from each
of our eight cubes, by eight cubes placed in some arbitrary position relative to our first eight cubes.
(1) (2) Orange hidden Brown hidden
Fig. 100,
Our representation of a block of sixteen tesseracts by two blocks of eight cubes.* Hence, of the two sets of eight cubes, each one will serve
* The eight cubes used here in 2 can be found in the second of the model blocks. They can be taken out and used,
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