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  2. Doorbell - Wikipedia

    en.wikipedia.org/wiki/Doorbell

    Doorbell mechanism from 1884 in Andrássy Avenue, Budapest Antique mechanically operated shop doorbell on a torsion spring. William Murdoch, a Scottish inventor, installed a number of his own innovations in his house, built in Birmingham in 1817; one of these was a loud doorbell, that worked using a piped system of compressed air. [1]

  3. Semaphore - Wikipedia

    en.wikipedia.org/wiki/Semaphore

    Flames were lit on one tower, then the next tower would light a flame in succession. The Byzantine beacon system was a semaphore developed in the 9th century during the Arab–Byzantine wars . The Byzantine Empire used a system of beacons to transmit messages from the border with the Abbasid Caliphate across Asia Minor to the Byzantine capital ...

  4. Smart doorbell - Wikipedia

    en.wikipedia.org/wiki/Smart_doorbell

    A smart doorbell is an internet-connected doorbell that notifies the home owner on his or her device (smartphone or any other gadget) when a visitor arrives at the door. It activates when the visitor presses the button of the doorbell, or alternatively, when the doorbell senses a visitor with its built-in motion sensors. The smart doorbell lets ...

  5. Alarm device - Wikipedia

    en.wikipedia.org/wiki/Alarm_device

    The word alarm comes from the Old French a l'arme meaning "to the arms", or "to the weapons", telling armed men to pick up their weapons and get ready for action because an enemy may have suddenly appeared. [1] The word alarum is an archaic form of alarm. It was sometimes used as a call to arms in the stage directions of Elizabethan dramas. [2]

  6. Electric bell - Wikipedia

    en.wikipedia.org/wiki/Electric_bell

    These were single-stroke bells: applying current to an electromagnet pulled the bell's clapper against the bell or gong and gave one chime. The bell did not ring continuously, but only with a single ring, until current was applied again. To sustain the tone, these bells were usually much larger than are used today with interrupter bells.

  7. Husband Confused by Wife’s ‘Neck-Less Shirt’ Asks TikTok for ...

    www.aol.com/husband-confused-wife-neck-less...

    TikTok users are trying to help out a confused husband who is bewildered by one of his wife’s “weird” garments that has “no head hole.”

  8. Signal lamp - Wikipedia

    en.wikipedia.org/wiki/Signal_lamp

    An Ottoman heliograph crew using a A Blinkgerät (left) Begbie signalling oil lamp, 1918 Signal lamps were pioneered by the Royal Navy in the late 19th century. They were the second generation of signalling in the Royal Navy, after the flag signals most famously used to spread Nelson's rallying-cry, "England expects that every man will do his duty", before the Battle of Trafalgar.

  9. Which of his family members is Trump tapping for key ... - AOL

    www.aol.com/family-members-trump-tapping-key...

    Which of his family members is Trump tapping for key ... - AOL

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