
Until the end of the 20th century, there was no truly universal standard. According to our current definition, everyone agrees on what “one meter” is.
Continue reading Start with a bang! »
#meter #meter #long

Until the end of the 20th century, there was no truly universal standard. According to our current definition, everyone agrees on what “one meter” is.
Continue reading Start with a bang! »
#meter #meter #long