Although the black and the white circles are of the same diameter the irradiation is in their case so intense that the white circles appear to be larger than the black.
No. LXXIII.—AN ILLUSION OF ARCHES
This excellent illusion appeared in a recent number of the “Strand Magazine”:—
Most persons will at first see the passages under these arches as running upwards from left to right, but presently, as their line of vision shifts, the arches will take a downward course from right to left. This very curious effect will well repay a little patience, if it is not realised at once.
57. WHERE WAS THE WEDDING?
She loses her head when she joins the brides,
He joins them after tea;
But both are swept by ruthless tides
Away on the western sea.