EDISON SCIENCE CORNER on Instagram: "Mercury Tilt Switch Tutorial mercury tilt switch — an old-school but reliable way to detect tilt or movement.Inside the tube there's a drop of mercury. As you know mercury is metal and it has conductive property. It has two connection leads. When the switch is tilted, the mercury flows and connects internal contact. We can use this anywhere were simple and power efficient tilt detection is needed. #mercuryswitch #tiltswitch #basucelectronics #switch #led #ele

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U-tube Manometer Principle