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  2. Terraria - Wikipedia

    en.wikipedia.org/wiki/Terraria

    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.

  3. Squib (explosive) - Wikipedia

    en.wikipedia.org/wiki/Squib_(explosive)

    The pyro fuse is installed on the positive terminal of the battery and receives a signal from the vehicle's control unit in the event of an accident. During an accident, the pyrotechnic charge in the pyrofuse is triggered, which uses a piston to break the power circuit and de-energize the vehicle's battery. [5]

  4. Rotary actuator - Wikipedia

    en.wikipedia.org/wiki/Rotary_actuator

    A rotary actuator is an actuator that produces a rotary motion or torque. The simplest actuator is purely mechanical, where linear motion in one direction gives rise to rotation. The most common actuators are electrically powered; others may be powered pneumatically or hydraulically , or use energy stored in springs .

  5. Thyristor power controller - Wikipedia

    en.wikipedia.org/wiki/Thyristor_power_controller

    In this operating mode, the controller changes the phase angle α of the thyristor ignition timing. A half wave corresponds to 180 ° el. (electrical degree). The actuator can adjust the phase angle of 0 ° el. (maximum power) up to 180 ° el. (no power). In a 50 Hz mains the controller switches every 20 ms and shows very fast behavior.

  6. Early thermal weapons - Wikipedia

    en.wikipedia.org/wiki/Early_thermal_weapons

    The Siege and Destruction of Jerusalem by the Romans Under the Command of Titus, A.D. 70, by David Roberts (1850), shows the city burning. Early thermal weapons, which used heat or burning action to destroy or damage enemy personnel, fortifications or territories, were employed in warfare during the classical and medieval periods (approximately the 8th century BC until the mid-16th century AD).

  7. Electromagnetic brake - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_brake

    Electromagnetic brakes or EM brakes are used to slow or stop vehicles using electromagnetic force to apply mechanical resistance (friction). They were originally called electro-mechanical brakes but over the years the name changed to "electromagnetic brakes", referring to their actuation method which is generally unrelated to modern electro-mechanical brakes.

  8. Fire damper - Wikipedia

    en.wikipedia.org/wiki/Fire_damper

    Fire/smoke dampers are similar to fire dampers in fire resistance rating, and also prevent the spread of smoke inside the ducts. When a rise in temperature occurs, the fire damper closes, usually activated by a thermal element which melts at temperatures higher than ambient but low enough to indicate the presence of a fire, allowing springs to ...

  9. Eddy current brake - Wikipedia

    en.wikipedia.org/wiki/Eddy_current_brake

    Disk electromagnetic brakes are used on vehicles such as trains, and power tools such as circular saws, to stop the blade quickly when the power is turned off.A disk eddy current brake consists of a conductive non-ferromagnetic metal disc attached to the axle of the vehicle's wheel, with an electromagnet located with its poles on each side of the disk, so the magnetic field passes through the ...