Tag Archives: 4-wire probe

The Story of 4-Wire Measurement

It is common knowledge in industry that 4-wire measurement is the preferred method for resistances under 1 Ω but what makes it so advantageous over 2- and 3- wire measurement? Let’s look at how the technique was invented and why it works. Building Bridges William Tomson, later Lord Kelvin of temperature scale fame, was studying…
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