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2. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   A table fan. A fan is a powered machine used to create a flow of air. A fan consists of a rotating arrangement of vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing, or case. [1]

3. Hand fan - Wikipedia

   en.wikipedia.org/wiki/Hand_fan

   Handheld Brise fan from 1800. A handheld fan, or simply hand fan, is a broad, flat surface that is waved back-and-forth to create an airflow. Generally, purpose-made handheld fans are folding fans, which are shaped like a sector of a circle and made of a thin material (such as paper or feathers) mounted on slats which revolve around a pivot so that it can be closed when not in use.

4. Rechargeable battery - Wikipedia

   en.wikipedia.org/wiki/Rechargeable_battery

   Rechargeable battery. A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.

5. What deals you should be shopping at Walmart this week ... - AOL

   www.aol.com/lifestyle/what-deals-you-should-be...

   Travelhouse 3-Piece Hardshell Luggage Set, $90 (originally $400): With this popular set, you'll get a 20-inch carry-on, a 24-inch checked bag and a 28-inch suitcase that's so roomy, you'll never ...

6. Bug zapper - Wikipedia

   en.wikipedia.org/wiki/Bug_zapper

   An outdoor bug zapper. A bug zapper, more formally called an electrical discharge insect control system, electric insect killer or (insect) electrocutor trap, is a device that attracts and kills flying insects that are attracted by light. A light source attracts insects to an electrical grid, where they are electrocuted by touching two wires ...

7. List of Pakistani inventions and discoveries - Wikipedia

   en.wikipedia.org/wiki/List_of_Pakistani...

   Nuclear energy. Sultan Bashiruddin Mahmood a Pakistani nuclear engineer developed a device to detect heavy water leaks in nuclear steam cylinders while working at Knapp nuclear power reactor near Karachi in 1972. [ 12 ] The device is patent in his name under his initials SBM probe and is widely used in nuclear power plants to date.