An object is called as a good conductor of electricity when it allows the electrons to flow within it easily (for example a copper rod). Resistance it the opposition to the f â¦ low of electrons through it.
The Ambush of the steamboat J. R. Williams, which was carrying supplies from Fort Smith to Fort Gibson along the Arkansas River on July 16, 1863 demonstrated this. The steamboat was destroyed, the cargo was lost, and the tiny Union escort was run off. The loss did not affect the Union war effort, however.
A pontoon bridge (or ponton bridge), also known as a floating bridge, uses floats or shallow-draft boats to support a continuous deck for pedestrian and vehicle travel. The buoyancy of the supports limits the maximum load they can carry. Most pontoon bridges are temporary, used in wartime and civil emergencies.