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2. Ringelmann scale - Wikipedia

   en.wikipedia.org/wiki/Ringelmann_scale

   Ringelmann smoke charts, 1897. The Ringelmann scale is a scale for measuring the apparent density or opacity of smoke. [1] [2] It was developed by a French professor of agricultural engineering Maximilien Ringelmann of La Station d'Essais de Machines in Paris, who first specified the scale in 1888. [3] [4]

3. Smoke testing (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Smoke_testing_(mechanical)

   In woodwind instrument repair, a smoke test involved plugging one end of an instrument and blowing tobacco smoke from the tester's mouth into the other to test for leaks. Escaping smoke revealed improperly seated pads and faulty joints (i.e. leaks). After this test the instrument was cleaned to remove nicotine and other deposits left by the ...

4. Aspirating smoke detector - Wikipedia

   en.wikipedia.org/wiki/Aspirating_smoke_detector

   An aspirating smoke detector (ASD) is a system used in active fire protection, consisting of a central detection unit which draws air through a network of pipes to detect smoke. [1] The sampling chamber is based on a nephelometer that detects the presence of smoke particles suspended in air by detecting the light scattered by them in the chamber.

5. Smoke testing - Wikipedia

   en.wikipedia.org/wiki/Smoke_testing

   Smoke testing may refer to: Smoke testing (electrical) looking for smoke when powering electrical items for the first time; Smoke testing (mechanical) the practice of using smoke to test for leaks; Smoke testing (software) trying the major functions of software before carrying out formal testing; Smoke testing, with theatrical smoke and fog

6. Smoke detector - Wikipedia

   en.wikipedia.org/wiki/Smoke_detector

   Smoke detector mounted on a ceiling Knowing this sound could save your life - it means replace the battery. A smoke detector is a device that senses smoke, typically as an indicator of fire. Smoke detectors/Alarms are usually housed in plastic enclosures, typically shaped like a disk about 125 millimetres (5 in) in diameter and 25 millimetres ...

7. DJT stock sinks by double digits to reverse gains after Trump ...

   www.aol.com/finance/djt-stock-sinks-double...

   Trump Media & Technology Group stock ()sank by double digits on Thursday, falling nearly 23% to reverse the gains it enjoyed on Wednesday as Donald Trump clinched victory over Kamala Harris in the ...