American inventor Thomas Alva Edison at General Electric company in the United States. Edison meets German-American mathematician and electrical engineer Dr. Charles Proteus Steinmetz . They walk in the plant yard. Men walk behind them. Edison, Steinmetz and men in a laboratory. They discuss. A block of wood on a table. The block disappears, reappears and falls over. A porcelain insulator breaks. Edison and Steinmetz talk seated at a desk. They look at equipment and discuss. Edison, Steinmetz and other man seated in an open car. A crowd of workers stands nearby. An early incandescent lamp.
Production of chewing gum in the United States. Workers pour ingredients into a large mixer. They place gum into a machine and cut strips into blocks. Blocks are rolled into slabs. A roller scores the slabs of gum. Women break slabs into individual sticks. A machine wraps the sticks of gums into packages. The machine scores the slabs.
Production of light bulbs in the United States. Wire hooks are placed in buttons to give filaments support. Machines in operation in a factory. A woman with pliers assembles the filaments. A machine is used for drilling. A filament is placed in a bulb. A screw socket is attached to the bulb. The lead-in wire is soldered to the base. A woman works. Neon signs on buildings.
A garment factory in the United States. Interior of the factory. Rolls of material in the factory. The material is matched with samples and is weighed. The material is machine marked. It is run through various other machines. The material is machine dried and folded. Men use patterns to cut the material. Women working on sewing machines. They sew pieces together.
Bombing tests by U.S. Army Air Service General Billy Mitchell in the United States. General Mitchell stands with other officers. A chemical bomb explodes on the forward deck of USS Alabama. An aircraft in flight overhead. It drops bomb on the ship. Smoke rises as the ship explodes. Several bombs being dropped on USS Alabama. Heavy smoke columns rise as the ship explodes. High explosive bombs being dropped. Formation of mushroom clouds after the explosions.
Buildings in an area in the United States. A car parked outside a building. The car drives away.
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