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2. Electrofishing - Wikipedia

   en.wikipedia.org/wiki/Electrofishing

   Electrofishing by boat. There are three types of electrofishers: backpack models, tote barge models, and boat mounted models, sometimes called a stunboat. [2] Backpack electrofisher generators are either battery or gasoline powered. They employ a transformer to pulse the current before it is delivered into the water.

3. Long-range acoustic device - Wikipedia

   en.wikipedia.org/wiki/Long-range_acoustic_device

   An LRAD on top of a police vehicle LRAD operator wearing hearing protection LRAD on a navy ship. A long-range acoustic device (LRAD), acoustic hailing device (AHD) or sound cannon is a specialized loudspeaker that produces sound at high power for communicating at a distance.

4. Marine propulsion - Wikipedia

   en.wikipedia.org/wiki/Marine_propulsion

   Marine steam reciprocating engines, ca. 1905 A wind propelled fishing boat in Mozambique. Until the application of the coal-fired steam engine to ships in the early 19th century, oars or the wind were the principal means of watercraft propulsion.

5. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threa­ded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.

6. Lead–acid battery - Wikipedia

   en.wikipedia.org/wiki/Lead–acid_battery

   Some battery designs include a simple hydrometer using colored floating balls of differing density. When used in diesel–electric submarines, the specific gravity was regularly measured and written on a blackboard in the control room to indicate how much longer the boat could remain submerged. [14]

7. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

8. South Carolina upsets No. 10 Texas A&M to further tighten SEC ...

   www.aol.com/sports/south-carolina-upsets-no-10...

   South Carolina (5-3, 3-3 SEC) never trailed after that. The Aggies (7-2, 5-1, SEC) entered the game as just 2.5-point favorites and started Marcel Reed at QB.

9. 18650 battery - Wikipedia

   en.wikipedia.org/wiki/18650_battery

   An 18650 battery [1] or 1865 cell [2] is a cylindrical lithium-ion battery common in electronic devices. The batteries measure 18 mm (0.71 in) in diameter by 65 mm (2.56 in) in length, giving them the name 18650. [3] The battery comes in many nominal voltages depending on the specific chemistry used.