Answer:
temperature
Step-by-step explanation:
Isotherms are lines with the same temperature that guarantee no condensation in skylights or roof skylights since they have a constant temperature value.
It is very important to know the isothermal line of skylights and skylights that must travel the construction stably. And they serve to quantifiably show in a graph the thermal bridge break, which represents the energy efficiency of a natural light element or enclosure.