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A potentiometer with a resistive load, showing equivalent fixed resistors for clarity. The potentiometer can be used as a voltage divider to obtain a manually adjustable output voltage at the slider (wiper) from a fixed input voltage applied across the two ends of the potentiometer. This is their most common use.
The principle of a potentiometer is that the potential dropped across a segment of a wire of uniform cross-section carrying a constant current is directly proportional to its length. The potentiometer is a simple device used to measure the electrical potentials (or compare the e.m.f of a cell).
For every different way there is to experience heat — in the sun, in the shade, on a rock, in a glade — there is a scientific debate about how to correctly measure and assess it.
Airflow increases the rate of heat transfer from or to the body, resulting in a larger change in body temperature for the same ambient temperature. The theoretical basis for thermometers is the zeroth law of thermodynamics which postulates that if you have three bodies, A, B and C, if A and B are at the same temperature, and B and C are at the ...
Resistance thermometers, also called resistance temperature detectors (RTDs), are sensors used to measure temperature. Many RTD elements consist of a length of fine wire wrapped around a heat-resistant ceramic or glass core but other constructions are also used. The RTD wire is a pure material, typically platinum (Pt), nickel (Ni), or copper ...
The time has come for the SEC’s fans, its media machine and especially its commissioner to fess up to the reality that has simmered under the surface this entire college football season.
Brazilian star Marta is staying with the Orlando Pride. The six-time FIFA world player of the year has re-signed with the defending National Women's Soccer League champions through 2026. Along the ...
A hot air balloon is equipped with a pyrometer for measuring the temperature at the top of the envelope in order to prevent overheating of the fabric. Pyrometers may be fitted to experimental gas turbine engines to measure the surface temperature of turbine blades.
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