Thermal noise occurs in all transmission media and communication equipment, including passive devices. It arises from random electron motion and is characterized by a uniform distribution of energy over the frequency spectrum with a Gaussian distribution of levels.
An occluded front is formed when a cold front overtakes a warm front. and usually form around mature low-pressure areas. The cold and warm fronts curve naturally poleward into the point of occlusion, which is also known as the triple point.
When warm air advances, it rides up over the denser, cold air mass to form a warm front.Warm fronts are associated with rain leading the front itself. If neither air mass advances, it forms a stationary front.3 people found this useful.hen warm air advances, it rides up over the denser, cold air mass to form a warm front.Warm fronts are associated with rain leading the front itself. If neither air mass advances, it forms a stationary front. 3 people found this useful.