Please explain the process and give an example of a machine that used this in the industrial revolution. best answer for a decent answer in the next hour.
The machine is made of iron. Coal is burned to heat water in a boiler to steam point, the pressure of the steam is used to drive an iron mechanical link.
Steam engines would run various means of transportation and systems to drive a series of belts to run assembly lines in factories.
Iron is not an energy source, but iron was used in constructing steam engines. Coal is burnt to heat water to make steam. That expanding steam can drive machinery. It is still used today (along with oil and gas) to heat water to run machinery, often to generate electricity. During the Industrial Revolution that machinery turned power trains in mills etc to manufacture materials and many things. In the early days of the railways steam engines (locomotives) were the only form of propulsion.
Iron doesn't provide power. Coal was only used to provide heat to boil water to make steam. Steam, if contained, produces pressure. Properly harnessed, pressure can drive pretty much anything.
