An opto-mechanical device for displaying motion picture film by projecting a rapid succession of film images onto a screen. Throughout the 20th century movie theaters used film projectors to show movies but starting in 2009 they began to rapidly replace them with digital projectors.
This early bicycle design called the Penny-farthing was first produced about 1870. It used an enlarged front wheel instead of gears to create greater speed and a smoother ride. It was the first machine to be called a bicycle.
Is a mode of human-powered transport by which a runner draws a two-wheeled cart which seats one or two people. An American missionary to Japan, is said to have invented the device around 1869 to transport his invalid wife through the streets of Yokohama.
Located in Philadelphia, Pennsylvania, the Liberty Bell is an iconic symbol of American independence. Upon the bell read the words "Proclaim LIBERTY throughout all the land unto all the inhabitants thereof." It weighs 2,080 pounds and is suspended from what is believed to be its original yoke, made of American elm.
This bird house is modeled after a wren’s ideal home. Wrens aren't picky about their homes and will nest in small, plain houses. Just make sure the entry holes measure about 1 inch in diameter to let the wrens in and keep predators out.
The Sago Palm Tree (Cycas revolute) is often called a “living fossil” because it is one of the most primitive seed plants alive today. Its origin traces back to ancient flora of the Mesozoic era more than 200 million years ago. It is easily recognizable due to its distinctive whorled feathery leaves.