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2. Braun (company) - Wikipedia

   en.wikipedia.org/wiki/Braun_(company)

   The 1950s also marked the beginning of the product that Braun is known for today: the electric shaver. Braun's first electric shaver, known as the S 50, was designed in 1938, but World War II delayed its introduction until 1951. [7] It featured an oscillating cutter block with a very thin, yet very stable steel-foil mounted above it.

3. Electric shaver - Wikipedia

   en.wikipedia.org/wiki/Electric_shaver

   Many modern electric shavers are water-resistant, allowing the user to clean the shaver in water. In order to ensure electrical safety, the charging/power cord for the shaver must be unplugged from it before the unit is cleaned using water. Some shavers are labeled as "Wet/Dry" which means the unit can be used in wet environments, for wet ...

4. Copper foil - Wikipedia

   en.wikipedia.org/wiki/Copper_foil

   Copper foil is a thin sheet of copper metal that is widely used in various applications due to its excellent electrical conductivity, malleability, and corrosion resistance. It is an essential material in the electronics industry, especially for manufacturing printed circuit boards (PCBs) and other electronic components.

5. Foil bearing - Wikipedia

   en.wikipedia.org/wiki/Foil_bearing

   A foil bearing, also known as a foil-air bearing, is a type of air bearing. A shaft is supported by a compliant, spring-loaded foil journal lining. Once the shaft is spinning fast enough, the working fluid (usually air) pushes the foil away from the shaft so that no contact occurs. The shaft and foil are separated by the air's high pressure ...

6. Ralph Braun - Wikipedia

   en.wikipedia.org/wiki/Ralph_Braun

   Braun "Entervan" conversion of a 1998-2000 Chrysler Town & Country. Braun started "Save-A-Step" manufacturing in 1963 to build the first motorized scooter, made from "a lawnmower differential, four big wheelbarrow tires, two 6-volt automotive batteries, makeshift wiring and switches I got from the hardware store, a kitchen chair, and a motor from a 1957 Pontiac kid's car that I rescued from a ...

7. Aluminum electrolytic capacitor - Wikipedia

   en.wikipedia.org/wiki/Aluminum_electrolytic...

   The second aluminum foil in the electrolytic capacitor, called the "cathode foil", serves to make electrical contact with the electrolyte. This foil has a somewhat lower degree of purity, about 99.8%. It is always provided with a very thin oxide layer, which arises from the contact of the aluminum surface with the air in a natural way.