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  2. List of Indian inventions and discoveries - Wikipedia

    en.wikipedia.org/wiki/List_of_Indian_inventions...

    The dome shaped stupa was used in India as a commemorative monument associated with storing sacred relics. Hanuman and Ravana in Tolu Bommalata, the shadow puppet tradition of Andhra Pradesh, India. Stepwell – While the early history of stepwells is poorly understood, water structures in Western India were their likely predecessor. [9]

  3. Timeline of Indian innovation - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_Indian_innovation

    Timeline of Indian innovation encompasses key events in the history of technology in the subcontinent historically referred to as India and the modern Indian state.. The entries in this timeline fall into the following categories: architecture, astronomy, cartography, metallurgy, logic, mathematics, metrology, mineralogy, automobile engineering, information technology, communications, space ...

  4. Padlock - Wikipedia

    en.wikipedia.org/wiki/Padlock

    Padlocks with modular locking mechanisms can often be taken apart to change the tumblers or to service the lock. Modular locking mechanism cylinders frequently employ pin, wafer, and disc tumblers. Padlocks with modular mechanisms are usually automatic, or self-locking (that is, the key is not required to lock the padlock)

  5. History of India - Wikipedia

    en.wikipedia.org/wiki/History_of_India

    Indian cultural influence (Greater India) Timeline of Indian history. Chandragupta Maurya overthrew the Nanda Empire and established the first great empire in ancient India, the Maurya Empire. India's Mauryan king Ashoka is widely recognised for his historical acceptance of Buddhism and his attempts to spread nonviolence and peace across

  6. Rotary dial - Wikipedia

    en.wikipedia.org/wiki/Rotary_dial

    The lock could be integral to the telephone itself or a separate device inserted through the finger hole nearest the finger stop to prevent the dial from rotating. The rotational return speed of the dial to its rest position is controlled by the governor , a mechanical regulating device, that assures a constant electrical pulsing rate of the dial.

  7. Opinel - Wikipedia

    en.wikipedia.org/wiki/Opinel

    The Opinel Virobloc or safety twistlock mechanism was invented by Marcel Opinel in 1955, increasing the safety and versatility of the knife by allowing the blade to be locked in the open position. [7] [4] [1] In 2000, the Virobloc locking mechanism was improved to allow locking the blade in either the open or closed position. [7] [1]

  8. Pin tumbler lock - Wikipedia

    en.wikipedia.org/wiki/Pin_tumbler_lock

    The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.

  9. Rotary combination lock - Wikipedia

    en.wikipedia.org/wiki/Rotary_combination_lock

    Many combination locks have three wheels, but the lock may be equipped with additional wheels, each with a drive pin and fly, in a similar manner. The number of wheels in the mechanism determines the number of specific dial positions that must be entered to open the lock, so a three-sequence combination is required for a three-wheel lock.