The opposite of an exothermic process is an endothermic process, one that absorbs energy in the form of heat. The concept is frequently applied in the physical sciences to chemical reactions, where as in chemical bond energy that will be converted to thermal energy (heat).n exothermic chemical reactions, the heat that is released by the reaction takes the form of electromagnetic energy. The transition of electrons from one quantum energy level to another causes light to be released.
As of 2012, the service operates more than 5,638 military aircraft, 450 ICBMs and 63 military satellites. It has a $140 billion budget with 309,339 active duty personnel, 185,522 civilian personnel, 71,400 Air Force Reserve personnel, and 106,700 Air National Guard personnel.
In 1945, there were over 12 million active duty military personnel. The Army, Navy, and Air Force had significant cuts in the numbers of personnel with the end of the Cold War, while the Marine Corps numbers have stayed relatively flat.