
Platinum resistance
Platinum resistance refers to the property of platinum wire to change its electrical resistance when its temperature changes. As the platinum heats up, its atoms move more, making it harder for electrons to pass through—thus increasing resistance. This predictable change allows platinum resistance thermometers (PRTs) to accurately measure temperature. Because platinum responds steadily and reliably over a wide temperature range, it's commonly used in precise temperature measurements, industrial processes, and scientific research.