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Há 1 hora · This is a list of fictional creatures and aliens from the universe of the long-running BBC science fiction television series Doctor Who. The series stars an extraterrestrial known as The Doctor who travels through time and space [1] in a machine known as the TARDIS. [2] In the process, the Doctor often comes into contact with various alien ...
Há 1 dia · Incandescent light bulb. A 230-volt incandescent light bulb with a medium-sized E27 (Edison 27 mm) male screw base. The filament is visible as the mostly horizontal line between the vertical supply wires. A scanning electron microscope image of the tungsten filament of an incandescent light bulb. Elaborate light in Denver, Colorado.
