A thermometer and light meter are the most useful when measuring two environmental changes.
may be
the special purpose digital voltmeter are devloped for measurement of temperatur. They are called as the digital thermometer .
barometer and voltmeter
Voltmeter is a device to measure EMF and potential difference in terms of volts Thermometer is a device to measure the temperature in terms of K(kelvin),C(Celsius) F(Fahrenheit)
Barometer and voltmeter
Barometer and voltmeter
Barometer and voltmeter
A barometer measures atmospheric pressure. A voltmeter measures the difference in voltage between two points A wavelength has nothing to do with either of these measurements.
The car's speedometer indicates the car's instantaneous speed. This is a big part of the reason that it's not called the car's accelerometer, thermometer, or voltmeter.
Examples: analytical balance, thermometer, pH-meter, refractometer, spectrophotometer, microscope, hardness tester, viscosimeter, electronic titrator, voltmeter, etc.
Both are used to measure temperature, but by different means. A liquid based thermometer uses the expansion of a liquid with temperature to indicate the temperature, while a thermocouple uses electrical differentials at the junctions of dissimilar metals to do so. So in the case of the liquid thermometer the reading is position of a liquid in a tube, and in the case of a thermocouple it is a voltage measured with a voltmeter. Thermocouples may be better suited to measuring extreme temperatures.
Because measuring weight with a ruler, speedometer, Geiger counter, voltmeter, thermometer, or frequency counter is prohibitively difficult, and has been all but rejected by the technological community.