High Voltage Electrical Discharge #1
David Parker
Lightning Conductor On Eiffel Tower
Peter Menzel/science Photo Library
Lightning Conductor
Cordelia Molloy/science Photo Library
Lightning Conductor
Science Photo Library
Lightning Conductor #1
Science Photo Library
Lightning Conductor Umbrella
Science Photo Library
Lightning Conductor Hats
Science Photo Library
Portable Lightning Conductor
Science Photo Library
High Voltage Discharge
David Parker
High Voltage Electrical Discharge #2
David Parker
High Voltage Electrical Discharge
David Parker
Jules Dupuis-delcourt
Sheila Terry
American Scientist Benjamin Franklin
Sheila Terry/science Photo Library
Portrait Of American Scientist Benjamin Franklin
Science Photo Library
Portrait Of American Scientist Benjamin Franklin
George Bernard/science Photo Library
Prokop Divis
Bildagentur-online/tschanz
Artwork Of Franklin's Electrical Equipment
Science Photo Library
Copper Balloon
Sheila Terry/science Photo Library
Gunpowder Magazine Storage
Sheila Terry/science Photo Library
Lightning Conductor
Andrew Lambert Photography
Umbrella Fitted With Lightning Conductor
Sheila Terry
Lightning Striking St, Mark's Tower 1745
Sheila Terry
Improvement Of Franklin's Electrical Kite
American Philosophical Society
Tesla Coils Firing
Victor Habbick Visions/science Photo Library
Franklin's Experiments With Electricity
American Philosophical Society
Franklin's Kite Experiment
American Philosophical Society
1778 Benjamin Franklin Scientist
Paul D Stewart
Benjamin Franklin (1706-90)
Sheila Terry
Jacques De Romas
Sheila Terry
19th Century Electro-magnetic Equipment
Sheila Terry
Jean Jallabert (1712-1768)
Sheila Terry
Lightning Rod
Andrew Lambert Photography