Description: A daily photo highlight from Smithsonian collections. [caption id="" align="aligncenter" width="422" caption="The operation of the Baker-Nunn camera, located at the Smithsonian Station in Shiraz, Iran, is explained to Mohammed Reza Pahlavi, Shah of Iran, April 26, 1959, by Smithsonian Astrophysical Observatory, Photographic print, Smithsonian Institution Archives, Record Unit
Description: [caption id="" align="aligncenter" width="329" caption="Photograph of the Samuel P. Langley commemorative statue at the Panama-Pacific International Exposition in San Francisco, California, in 1915, Langley was the third Secretary of the Smithsonian Institution, 1887-1906, and pioneer in astrophysics and aerial navigation, c. 1915, by Unknown photographer, Photographic print,
Description: [caption id="" align="aligncenter" width="410" caption="The Division of Radiation and Organisms, located in the basement of the Smithsonian Institution Building (SIB), Shown here is apparatus for studying phototropism (bending toward light) of seedlings, in connection with experiments to determine effects of wave lengths of light on growth, Date unknown, by Unidentified
Description: [caption id="" align="aligncenter" width="425" caption="Dr. Judith A. Blake, biological technician at the Smithsonian's new Molecular Systematics Laboratory operated by the National Museum of Natural History at the Smithsonian's Museum Support Center in Suitland, MD, stores tissue samples from plants and animals at temperatures of -148 degrees Fahrenheit, 1990, by Harold E.
Description: [caption id="" align="aligncenter" width="261" caption="A project participant uses calipers to measure a tree on Barro Colorado Island during Smithsonian Tropical Research Institute (STRI) census, similar to the one in Malaysia, on the biological diversity of tropical rainforests, 1985?, by Carl Hansen, Photographic print, Smithsonian Institution Archives, Accession 98-015 Box
Description: [caption id="" align="aligncenter" width="408" caption="Physicist Hans Albrecht Bethe (1906-2005) is shown being interviewed by John O’Neill (science journalist, New York Tribune), and William Laurence (science journalist, New York Times) at the George Washington University Conference on Theoretical Physics, January 1939, by Fremont Davis, Photographic print, Smithsonian
Description: [caption id="" align="aligncenter" width="410" caption="Sheila Hershey rings up a "sale" on world's first cash register, which was placed in the Smithsonian Institution on July 1, 1959, The device was invented in 1879 by James Ritty, a Dayton, Ohio, cafe owner, who sold the rights to the machine for $1,000, by Unidentified photographer, Photographic print, Smithsonian
Description: [caption id="" align="aligncenter" width="408" caption="Aerial photo from the Washington Monument showing the newly completed Museum of History and Technology, now the National Museum of American History, the construction of the West Wing of the Natural History Building, The National Mall, Constitution Avenue, the Capitol in the distance, and the Smithsonian Institution
Description: [caption id="" align="aligncenter" width="309" caption="Washington Monument, 1919, by Martin A. Gruber, Black-and-white photograph, Smithsonian Institution Archives, Martin A. Gruber Photograph Collection, 1919-1924, Local Number: SIA2010-2047."][/caption]