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2. Inductive sensor - Wikipedia

   en.wikipedia.org/wiki/Inductive_sensor

   It is used for positioning and detection of metal objects. The sensing range of an inductive switch is dependent on the type of metal being detected. Ferrous metals, such as iron and steel, allow for a longer sensing range, while nonferrous metals, such as aluminum and copper, may reduce the sensing range by up to 60 percent. [2]

3. Oscillating multi-tool - Wikipedia

   en.wikipedia.org/wiki/Oscillating_multi-tool

   An oscillating multi-tool or oscillating saw is a multitool and power tool that oscillates (rather than rotating or reciprocating), powered by battery or mains. The name "multi-tool" is a reference to the many functions that this tool can perform with the range of attachments available.

4. Crystal radio - Wikipedia

   en.wikipedia.org/wiki/Crystal_radio

   A crystal detector includes a crystal, usually a thin wire or metal probe that contacts the crystal, and the stand or enclosure that holds those components in place. The most common crystal used is a small piece of galena; pyrite was also often used, as it was a more easily adjusted and stable mineral, and quite sufficient for urban signal ...

5. Electronic oscillator - Wikipedia

   en.wikipedia.org/wiki/Electronic_oscillator

   Simple relaxation oscillator made by feeding back an inverting Schmitt trigger's output voltage through a RC network to its input.. An electronic oscillator is an electronic circuit that produces a periodic, oscillating or alternating current (AC) signal, usually a sine wave, square wave or a triangle wave, [1] [2] [3] powered by a direct current (DC) source.

6. Flour Bugs Are a Real Thing—Here’s an Easy Way to ... - AOL

   www.aol.com/lifestyle/flour-bugs-real-thing-easy...

   A food safety expert weighs in on flour bugs, also known as weevils, that can infest your pantry after one TikToker found her flour infested with the crawlers.

7. Groom Creates Spreadsheet Scoring System to Cut Down Wedding ...

   www.aol.com/groom-creates-spreadsheet-scoring...

   In a now-viral video on TikTok, bride-to-be Kate O'Neill explains how her fiancé Michael O'Malley developed an "insane but practical" way to cut down their wedding guest list

8. Keep your razor blades sharp and in tip-top shape with this 3 ...

   www.aol.com/lifestyle/keep-razor-blades-sharp...

   Clean, sharpen and hang your razor with The Tap! Buy one here: https://fave.co/3aJIKIo Our team is dedicated to finding and telling you more about the products and deals we love. If you love them ...

9. Foxhole radio - Wikipedia

   en.wikipedia.org/wiki/Foxhole_radio

   Only certain sites on the blade acted as diodes, so the soldier moved the pencil lead around on the surface until the radio station was heard in the earphones. Another detector design was a battery carbon resting across the edges of two vertical razor blades, based on the 1879 "microphone" detector of David Edward Hughes. [2] [7]