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Optical illusion. Checker shadow illusion. The two squares with x mark are the same shade of gray. Cut out the two extra squares, compare and check.
LMY24T01_2C3C4D6

Optical illusion. Checker shadow illusion. The two...

Henrietta Leavitt (1868-1921), US astronomer. Leavitt graduated from Radcliffe College in 1892, and joined the Harvard College Observatory in 1895. Her early work on the photographic magnitudes of sta...
LMY23T01_G16F3D

Henrietta Leavitt (1868-1921), US astronomer. Leav...

window detail in the Jardin Majorelle , Marrakesh , Morocco , North Africa
LMY22T01_D2W0T3

window detail in the Jardin Majorelle , Marrakesh ...