The function of a mechanical downlock indicator used on an aircraft's landing gear enables the pilot to have a visual indication that the landing gear is down and locked, which means that the aircraft can land safety. Normally, the indication on the cockpit is via 3 green lights near the landing gear control handle.
There is a pair of electrical contacts that closes when the aircraft's landing gear extends to an angle that is beyond the over-centre of the linkages which then completes an electrical path to light up the landing gear control handle's green light to indicate gears down and locked.
The function is to change color. This happens when all the H+ ( or H3O+) from the acid has been neutralized, an indicator in the sample will change
Change color
It acts as an indicator so it changes color
phenanthroline is used as a redox indicator
It's one of the diagnostics of whether body pH is being properly regulated. Please see the link.
The function is to change color. This happens when all the H+ ( or H3O+) from the acid has been neutralized, an indicator in the sample will change
Change color
A dial indicator is an instrument used to accurately measure small linear distances, and is frequently used in industrial and mechanical processes.
The function of a mechanical switch is to open or close a circuit by hand as opposed to an electronic switch which works electronically.
The airspeed indicator or airspeed gauge is an instrument used in an aircraft to display the airspeed in knots
gangnam style
Gangnam Style
it serves as a mechanical rectifier
loaded chamber indicator
one of the parts of smokehouse
Pressure Indicator is any instrument that indicates pressure. Pressure Gauge is also a type of pressure Indicator. It is a mechanical device. Pressure indicators can work on mechanical deflection (in case of pressure gauge) or Piezo electric effect, change in capacitance, change in inductance etc. These are generally digital type instruments.
the main function of a windmill is to provide power or mechanical energy