The metre was originally defined as a fraction of the distance from the North Pole to the equator. What problems would this definition of the metre create for people?

The original definition of the meter as a fraction of the distance from the North Pole to the equator would create several problems for people. Here are some of the main issues:

1. Inaccuracy: The Earth's polar axis is not perfectly straight, and the shape of the Earth is not a perfect sphere. As a result, the distance from the North Pole to the equator varies depending on the chosen path. This would lead to inconsistencies and inaccuracies when trying to measure and standardize lengths. Different surveyors might measure different distances, leading to inconsistent measurements and confusion.

2. Universality: The original definition of the meter would make it difficult to ensure a universal standard of measurement. Since the distance from the North Pole to the equator changes, different regions might adopt different meter lengths based on their individual measurements. This lack of uniformity would make international collaboration and trade more challenging, as measurements would not be compatible between regions.

3. Reproducibility: If the meter were defined based on the North Pole to equator distance, it would be challenging to reproduce this measurement in a consistent and accurate manner. The measurement would involve arduous and lengthy surveying processes, which would be prone to human errors, variations in methods, and changing Earth conditions. This would make it difficult to replicate the measurement accurately, leading to inconsistencies in the definition of the meter.

Overall, the original definition of the meter based on the distance from the North Pole to the equator would create problems related to accuracy, universality, and reproducibility. It would hinder the establishment of a standardized and consistent system of measurement, making it challenging for people in different regions to communicate and collaborate effectively.