Slate reads “He who leaves the beaten track in search of knowledge oft comes unexpected to his goal.”. A photo of a sunrise with word “Light”. Diagram enumerates the types of light- torch, candle, kerosene, gas and electric- and their level of relative efficiency. A drawing featuring different types of lights. Animation depicts a man hand pedaling to pull a block and tackle. Animations show a moving horse and engines that operate on steam, gasoline, and electricity, operate similar machines, pulling block and tackle faster than man. Lights illuminate Times Square in New York City at night. Giant turbines operate at a power plant in the United States.
Railway car with lighting powered by Edison batteries (also known as nickel-iron battery or NiFe battery) in the United States. A man opens the compartment under a train that contains Edison batteries, also known as storage batteries. He pulls out one of the storage batteries inside the compartment. Lights inside the train car. Train signal moving. A switch tower in a train junction. Engineers operate control in tower to change switch direction. Railroad switch moving. Locomotive and train moving down track.
Various cars driving on a highway in the United States in the late 1960s. A white station wagon on the highway. Cars on interchange. A bus driving on highway. Parked cars in a lot. Lights and arrow signs at night. Paper and light bulb garlands. Electric power transmission towers. Pipes and storage tanks at a oil or gas refinery.
Evergreen coniferous trees in the United States. A man cutting a tall tree with a large chainsaw. The tree falls to the ground. A Caterpillar 651 Wheel Tractor Scraper moving. A worker adjusts a Tops table saw in front of a wooden frame being built on a construction site. A man planting an evergreen tree in his yard.
A large foldable tent at a camp in the United States. A man, his wife, and children dismantles the tent, fold, and place it in the back of their car after camping. Tent-like huts are seen in the background.
United States Navy crew happily celebrating on deck of the USS Brooklyn (ACR-3) during a naval parade. The Brooklyn is seen at close range. The ship flies a frayed and tattered battle flag. The entire length of the ship is seen.
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