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Pace (unit)

math Maturity 11-13 Next article →

A pace is a way to measure length using your body. It is often just one normal walking step. Sometimes, a pace is a double step. This means you walk two steps and return to the same foot. Your own pace might change over time. Your length can decrease as you get older. Some health conditions can change your step too.

People use pacing to measure distance in many ways. Surveyors use it as an informal way to check land. They count two steps as one single pace. This is done by comparing steps to a standard rod or chain. The word pace can also mean something different. It can show how much time it takes to travel. Runners often use minutes per kilometer to show this.

Many ancient groups had their own versions of the pace. The Ancient Romans had a very specific way of measuring. They measured a full stride from one heel to the next. This was two steps, one for each foot. A leader named Marcus Vipsanius Agrippa helped set a standard. He set the Roman pace at five Roman feet. This was about 4.8 feet long.

History shows us how these units grew and changed. One thousand Roman paces made a Roman mile. This is where we get our English word "mile." The Byzantine people used a pace called a béma. Their double pace was five Greek feet long. In Wales, a pace was three Welsh feet of 9 inches. This was very similar to an English yard.

Different countries also had unique ways to measure. A Russian pace was once an arm's length. This came from an Ottoman unit from around 1500. Later, Peter the Great changed the Russian units. He used English units to make them more exact. He made the new pace exactly 28 inches long. This helped soldiers calibrate their rifle sights in the field.

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