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2. Christmas lights - Wikipedia

   en.wikipedia.org/wiki/Christmas_lights

   Light sculptures are also made in everything from wire-mesh frogs to artificial palm trees outlined in rope lights. In Pakistan, fairy lights are often used to decorate in celebration of Eid ul-Fitr at Chaand Raat, which occurs at the end of Ramadan. In India on Diwali too, homes, shops and streets are decorated with strings of fairy lights.

3. Fairy lamp - Wikipedia

   en.wikipedia.org/wiki/Fairy_lamp

   The popularity of fairy lamps spread to America, and glassworks on the eastern seaboard and Midwest began manufacturing fairy lamps as well. An exhibit at the 1893 World's Fair in Chicago featuring an island lit by fairy lamps [ 6 ] (3,000 of which were donated by Samuel Clarke), [ 5 ] later toured various American cities. [ 7 ]

4. Time switch - Wikipedia

   en.wikipedia.org/wiki/Time_switch

   A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.

5. Light-emitting diode - Wikipedia

   en.wikipedia.org/wiki/Light-emitting_diode

   Light can be used to transmit data and analog signals. For example, lighting white LEDs can be used in systems assisting people to navigate in closed spaces while searching necessary rooms or objects. [103] Assistive listening devices in many theaters and similar spaces use arrays of infrared LEDs to send sound to listeners' receivers.