Complex sentence: For a specific object being measured, the direct correlation of change in measurement of distance with the change in measurement of time creates the constancy of the speed of light, which in turn determines the measured temperature of a given object through Planck's constant.
Split into simpler sentences: For a specific object being measured, the direct correlation of change in measurement of distance with the change in measurement of time creates the constancy of the speed of light. This in turn determines the measured wavelength, and thus the temperature of a given object, through Planck's constant.