Search results
Results from the WOW.Com Content Network
A replica of Heron's automated temple doors by Kotsanas Museum of Ancient Greek Technology, Athens, Greece. In the 1st century AD, mathematician Heron of Alexandria in Roman Egypt invented the first known automatic door. He described two different automatic door applications. The first application used heat from a fire lit by the city's temple ...
To open the door, the motor turns the pulley, which in turn turns the belt, which in turn drags the door. To close the door, the reverse occurs. Historically, elevator doors were opened using simple harmonic motion by a set of mechanical linkages; the motor, geared down, would rotate linked arms, which in turn would drive the door.
Swing side, door mounted sensor—mounted on the swing side of the door itself, used as the door is opening to detect a user in the way of the opening door. In that case, the operator stops the door. The sensitivity of infrared sensors must be reduced at the end of the opening angle, if it starts seeing a wall next to the door, so it may not ...
Terraria (/ t ə ˈ r ɛər i ə / ⓘ tə-RAIR-ee-ə [1]) is a 2011 action-adventure sandbox game developed by Re-Logic. The game was first released for Windows and has since been ported to other PC and console platforms.
The word automaton is the latinization of the Ancient Greek automaton (αὐτόματον), which means "acting of one's own will".It was first used by Homer to describe an automatic door opening, [2] or automatic movement of wheeled tripods. [3]
Hokuyo Automatic Co., Ltd. (Japanese: 北陽電機株式会社) is a global manufacturer of sensor and automation technology headquartered in Osaka, Japan. [ 1 ] [ 2 ] Hokuyo is known for its 2D and 3D scanning laser range finders for use in AGV , UAV , and mobile robot applications.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
Calamity James, a British comic book character from The Beano; Calamity Jane, a 1953 film based on the person; Calamity Town, a 1942 novel by Ellery Queen; The Calamity, a central plot point for the 2011 video game Bastion; Calamity, a mod for the 2011 video game Terraria "Calamity", a song by Zayn from his 2021 album Nobody Is Listening