Here's a breakdown:
* Maxwell's Contribution: Maxwell's equations of electromagnetism, developed in the 1860s, showed that light was an electromagnetic wave. He predicted that these waves would travel at a specific speed, which could be calculated from the permittivity and permeability of free space.
* Speed of Light: The speed of light was already measured in the 19th century by scientists like Ole Rømer and Hippolyte Fizeau, who used astronomical and terrestrial methods. Their measurements were quite accurate for the time.
* Maxwell's Calculation: Maxwell's equations predicted the speed of light to be approximately 299,792,458 meters per second (m/s), remarkably close to the modern value. This was significant because it provided a theoretical basis for the previously measured speed of light.
Therefore, it's more accurate to say that Maxwell's equations predicted the speed of electromagnetic waves, which we now know to be the speed of light.
It's important to note that the speed of light is a fundamental constant in physics, and it's not something that is calculated but rather a measured value. Maxwell's equations helped us understand why light travels at that specific speed.
