BLUE, ORANGE & PINK SAND GRAINS) The tip of a spiral shell has broken off and become a grain of sand. After being repeatedly tumbled by action of the surf this spiral sand grain has become opalescent in character. It is surrounded by bits of coral, shell, and volcanic material.
(MASK SAND) A single grain of sand from the island of Corsica, France, looks like a mask (magnification 150 times)
A slice through a fresh grape is seen using lighting that passed through the grape.
A slice through the same grape is seen using lighting that has reflected off the surface of the grape.
A small capillary in the lung is full of red blood cells seen in orange. The dark blue spaces are air sacs. The walls of these tiny sacs (alveoli) carry red blood cells close to the oxygen rich air sacs, which is where the red blood cells pick up oxygen and give off carbon dioxide.
A section of bone has been stained with fluorescent markers to illuminate areas of new bone formation. The row of cells at the bottom are bone-forming osteoblasts. The bright colors show where new bone has been formed.
All images courtesy of The Art of Science.