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600 BCE
Thales discovered static electricity
A Greek named Thales discovered static electricity by rubbing amber and silk together. -
Conductors/nonconductors
Conductors and nonconductors were distinguished by Stephen Gray. -
Coal discovered
Near Richmond, Virginia, coal was discovered. -
First recorded coal shipment
In 1758, the first shipment of coal was recorded. -
First steam engine patented
The James Watt steam engine was patented in 1769. -
Streets lit with gas lights
The first city to light their streets with gas lights was Baltimore, Maryland. -
Coal cutting machines available
In the 1880s, coal cutting machines became available in the US. -
Wood used to heat houses
By now, the majority of houses in the US used wood to generate heat. -
First nuclear power plant
In Pennsylvania, the first nuclear power plant was built. -
First electric car
The first electric car was made by General Motors in 1990.