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The compass is an instrument that serves to orient oneself and its foundation is based mainly on the property of magnetized needles.
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Glass ampoule inside which the vacuum has been made, there is a filament that produces light by incandescent at the passage of an electric current.
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The small plane is a light aircraft of small size, it was invented with the purpose of fulfilling the dream of flying.
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A telephone is a telecommunication device that allows you to encode, decode and transmit sounds remotely by using electrical signals.
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The wheel is a circular and mechanical element that rotates around an axis. It is one of the fundamental inventions in human history.
