there r many ways to measure value, rarity, weight, how hard it was to make, who made it, and how old it is.
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They are data.
Experimental calculations should use measured values of resistors, because actual resistors can deviate slightly from their color-coded values due to manufacturing tolerances. Using measured values ensures more accurate results in experiments where resistor values play a critical role.
Measured values are quantitative data obtained through direct observation or experimentation using instruments or tools. These values represent specific characteristics or properties of a phenomenon, such as length, weight, temperature, or time. They are essential in scientific research and data analysis, providing a basis for comparison, validation, and further investigation. Accuracy and precision of measured values are critical for reliable results.
Data
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Nominal values of resistors are predefined standard values set by manufacturers, while measured values can differ due to tolerances, manufacturing variations, and environmental factors. Tolerances indicate the permissible deviation from the nominal value, which can range from a few percent to higher values, depending on the resistor type. Additionally, temperature, humidity, and aging can affect the resistance, leading to discrepancies between the nominal and measured values.
Interpolation.
To take appropriate decisions based on measured values
Sph (sphere) is a measurement of refractive error in eyeglass prescriptions, indicating the amount of nearsightedness or farsightedness. It is measured in diopters. Positive sph values indicate farsightedness, while negative values indicate nearsightedness.