31. It follows that if two systems are in thermal equilibrium , then their temperatures are the same. 32. Thermal equilibrium occurs when a system's macroscopic thermal observables have ceased to change with time.33. Systems in thermodynamic equilibrium are always in thermal equilibrium , but the converse is not always true. 34. One may imagine an isolated system, initially not in its own state of internal thermal equilibrium . 35. The fiber uniformity upon achieving stable flow rates and thermal equilibrium , tends to be very good. 36. So they're telling us the earth is within 3 % of perfect thermal equilibrium ?? 37. :A neutrinosphere is a transient region within a supernova explosion where neutrinos exist in thermal equilibrium . 38. So a glass bottle warms up the water better until the inside and outside reach thermal equilibrium ? 39. This statement implies that thermal equilibrium is an equivalence relation on the set of thermodynamic systems under consideration. 40. Another consequence of equivalence is that thermal equilibrium is a transitive relationship and is occasionally expressed as such: