Thermals are sometimes indicated from the existence of obvious isolated cumulus clouds at the best of the thermal. Cumulus clouds are formed because of the rising air within a thermal because it ascends and cools, right until the h2o vapor within the air begins to condense into seen droplets. https://thermal-shock-testing-for90134.bloggactivo.com/34952189/not-known-facts-about-pcb-thermal-cycling-failure-modes