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Home > All Images > 1993 > October

October Gallery

Choose from 30 pictures in our October collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Chloroplast in cell of pea plant Featured October Print

Chloroplast in cell of pea plant

Coloured transmisson electron micrograph of a chloroplast (green) sitting in the cytoplasm of a pea plant Pisum sativum. The chloroplast is the site of photosynthesis where carbohydrates are obtained from carbon dioxide using the energy from sunlight. The chloroplast is bound by a double membrane. Internally, it consists of stacks of flattened membranes called grana (threadlike) suspended in a matrix of hydrophilic proteins. The grana contain the chlorophyll pigments and are the sites of light reactions during photosynthesis. The orange at left is part of a nucleus and the orange strip at right is the cell wall. Magnification: x1680 at 6x4.5cm size

© DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY

Us-Shuttle Columbia, Horizon Featured October Print

Us-Shuttle Columbia, Horizon

The Space Shuttle Columbia is reflected in a marsh 18 October 1993 as it lifts off from launch pad 39-B at the Kennedy Space Center in Florida, US. Columbia carries a seven person crew that will perform microgravity experiments in Spacelab Life Sciences-2 during their scheduled 14 days in orbit. / AFP PHOTO / BRUCE WEAVER

© Agence France-Presse (AFP) - All Rights Reserved

Lavoisiers mercury experiment on oxygen Featured October Print

Lavoisiers mercury experiment on oxygen

Lavoisier's mercury experiment on air. Early engraving showing the apparatus used by Antoine Lavoisier (1743-94) to demonstrate the formation of metal oxides. Mercury was placed in the retort at left, the end of which led to an air chamber in a bell jar over mercury (right). The retort was gently heated over 12 days. A reddish compound formed on the mercury in the retort, and the volume of air in the bell jar decreased. The remaining gas extinguished a flame. This showed that oxygen had been removed from the air. The red compound, on heating, released mercury and generated a gas which supported combustion and would support life (oxygen)

© SCIENCE PHOTO LIBRARY