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Stadion (unit)

math Maturity 11-13 Next article →

Long ago, people in Greece used a special unit to measure length. This unit was called a stadion.

It helped them describe how far they had walked. One stadion was equal to 600 ancient Greek feet. These feet were called podes. Measuring things was very important for travelers and builders. However, the size of a foot changed in different places. This made the stadion different depending on where you were.

Because the foot changed, the stadion changed too. Historians have many different ideas about its exact length. They look at old records to find clues. Some scholars think it was about 192 meters long. This is called the Olympic stadion. Others suggest the Attic stadion was about 185 meters. A different version is the Babylonian-Persian stadion at 196 meters. There was even a Phoenician-Egyptian version that was 209 meters.

Many people have studied these old measurements over many years. A man named Lev Vasilevich Firsov tried to find the truth. He looked at distances written by Eratosthenes and Strabo. These old distances were not always straight lines. Firsov compared them to modern, straight-line measurements. He used an average to find a likely answer. His result was about 185 meters.

Choosing the right length is a very hard job. It changes how we read old books. For example, Eratosthenes tried to measure the Earth. He used the size of the Earth's circumference. His math depends on which stadion he used. If we pick the wrong size, his numbers change. This shows why every meter matters to historians.

Even though the stadion is an old unit, the name lived on. In the Middle Ages, people used the word stadium differently. It became a synonym for a furlong. A furlong is a different unit of length. It is equal to 220 yards. It is also one eighth of a mile. This shows how words can travel through time. They change meaning but keep their names.

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