Free Images: "bestof:Incandescent light, unknown manufacturer, zigzag filament, c. 1895 - DSC06549.JPG Light bulb exhibited in the Franklin Institute Philadelphia Pennsylvania USA I"
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Photocopy of photograph, photographer unknown, before 1892. City of Philadelphia Records Department, Photo No. 41097. Original print in the Penrose Collection, Historical HABS PA,51-PHILA,674-1.jpg
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Jean-Léon Gérôme - The Death of Caesar - Walters 37884.jpg
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Incandescent light, unknown manufacturer, zigzag filament, c. 1895 - DSC06549.JPG
Westinghouse incandescent light, carbon double arch filament, c. 1890 - DSC06545.JPG
Weston Electric Lighting Co. incandescent light, sinusoidal filament, c. 1885 - DSC06551.JPG
Swan Electric Light Co. incandescent light, carbon double arch filament, c. 1882 - DSC06555.JPG
United Electric Improvement Company incandescent light, carbon single arch filament, c. 1894 - DSC06547.JPG
Type A incandescent light - DSC06557.JPG
General Electric Mazda B electric light, ductile tungsten filament, c. 1910-1915 - DSC06553.JPG
Leyden jars, maker unknown, c. 1820-1860 - DSC06563.JPG
Maximum-minimum thermometer - DSC06539.JPG
Anemometer with 8 vanes, c. 1893, T. B. Bickerton & Co - DSC06537.JPG
Aneroid barometer, early 1900s, Selsi - DSC06536.JPG
No. 1 Standard Barometer with Attached Thermometer, 1837, by L. C. Francis - DSC06540.JPG
Sling psychrometer (hygrometer), early 1900s, Tycos Taylor Instrument Company - DSC06538.JPG
Centrifuge, maker unknown, c. 1860 - Franklin Institue - DSC06631.JPG
Centrifuge, operating model, maker and date unknown - Franklin Institue - DSC06622.JPG
Mantel clock, maker unknown, c. 1870 - Franklin Institue - DSC06618.JPG
Singer Sewing Machine, date unknown - Franklin Institue - DSC06676.JPG
Toaster, maker and date unknown - Franklin Institue - DSC06674.JPG
Benjamin Franklin's electrostatic generator, maker unknown, c. 1745 - DSC06559.JPG
Benjamin Franklin's static electricity tube (Collinson tube), maker unknown, London, c. 1747 - DSC06567.JPG
Pulley system - Franklin Institue - DSC06672.JPG
Unidentified telescope - Franklin Institute - DSC06689.JPG
Unidentified telescope - Franklin Institute - DSC06705.JPG
Interior view, Franklin Institute - DSC06535.JPG
Interior view, Franklin Institute - DSC06541.JPG
Interior view, Franklin Institute - DSC06542.JPG
Interior view, Franklin Institute - DSC06543.JPG
Interior view, Franklin Institute - DSC06570.JPG
Interior view, Franklin Institute - DSC06598.JPG
Interior view, Franklin Institute - DSC06606.JPG
Interior view, Franklin Institute - DSC06608.JPG
Interior view, Franklin Institute - DSC06614.JPG
Interior view, Franklin Institute - DSC06681.JPG
Interior view, Franklin Institute - DSC06708.JPG
Interior view, Franklin Institute - DSC06709.JPG
Interior view, Franklin Institute - DSC06715.JPG
Interior view, Franklin Institute - DSC06728.JPG
Franklin's Bells (replica) - DSC06569.JPG
Aircraft engine - Franklin Institute - DSC06591.JPG
Aircraft engine - Franklin Institute - DSC06592.JPG
Aircraft engine - Franklin Institute - DSC06593.JPG
Aircraft engine - Franklin Institute - DSC06594.JPG
Aircraft engine - Franklin Institute - DSC06596.JPG
Propellers - Franklin Institute - DSC06584.JPG
T33 jet trainer - Franklin Institute - DSC06571.JPG
T33 jet trainer - Franklin Institute - DSC06577.JPG
Bifocals by Benjamin Franklin - Franklin Institue - DSC06605.JPG
Redheffer's perpetual motion machine - Franklin Institue - DSC06610.JPG
1581 Galileo escapement - Franklin Institue - DSC06663.JPG
1660 English escapement - Franklin Institue - DSC06664.JPG
1710 verge escapement - Franklin Institue - DSC06668.JPG
1770 double pinwheel escapement - Franklin Institue - DSC06667.JPG
Amazing Machine collection - Franklin Institute - DSC06638.JPG
Nairne London telescope - Franklin Institute - DSC06712.JPG
Nairne London telescope - Franklin Institute - DSC06714.JPG
Apollo A7L suit cover - Franklin Institute - DSC06692.jpg
Baldwin 60000 locomotive - Franklin Institute - DSC06720.JPG
People's Railway Locomotive No. 3 - Franklin Institute - DSC06724.JPG
People's Railway Locomotive No. 3 - Franklin Institute - DSC06725.JPG
Apollo lander, Franklin Institute - DSC06612.JPG
Packard diesel aircraft engine - Franklin Institute.jpg
Wright 1911 Model B Flyer - Franklin Institute - DSC06579.JPG
Wright 1911 Model B Flyer - Franklin Institute - DSC06581.JPG
Wright Brother 1903 drawing - Franklin Institute - DSC06583.JPG
Wright Brother airfoils and notes - Franklin Institute - DSC06572.JPG
Wright Brother airfoils and notes - Franklin Institute - DSC06573.JPG
Wright Brother airfoils and notes - Franklin Institute - DSC06574.JPG
Wright Brother airfoils and notes - Franklin Institute - DSC06575.JPG
Wright Brothers electrical control device - Franklin Institute - DSC06590.JPG
Wright Brothers incidence indicator - Franklin Institute - DSC06588.JPG
Wright Brothers landing device - Franklin Institute - DSC06585.JPG
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