Lemon battery Lemon battery A lemon battery is a simple battery often made for the purpose of education. Typically, a piece of zinc metal (such as a galvanized nail) and a piece of copper (such as a penny) are inserted into a lemon and connected by wires. Power generated by reaction of the metals is used to power a small device such as a light emitting diode (LED). The lemon battery is similar to the first electrical battery invented in 1800 by Alessandro Volta, who used brine (salt water) instead of lemon juice. The lemon battery illustrates the type of chemical reaction
Polar Bear (battery-electric locomotive) Railway. It was built on the frame of a 1988-built vehicle of similar design (one of the last to be built) and has a newly fabricated body replicating that of two similar locomotives that operated the railway between 1921 and 1926. It has been built to represent "Polar Bear" in original form, and works engineering trains and occasional passenger services. Polar Bear (battery-electric locomotive) Polar Bear was a gauge battery-electric locomotive built by Wingrove & Rogers in 1921 as works no. 314 for the Groudle Glen Railway on the Isle of Man. Together with its sister, "Sea Lion", they were