The messages began to re- peat, informing him of altitude, closure rate, weapons status, external heating, stress factors, power demands, air-conditioning faults.

No external heating is needed because the chemical reactions release enough heat to break up molecules of oil or sugar following in their wake.

A cold-cathode vacuum tube does not rely on external heating of an electrode to provide thermionic emission of electrons.

The Boeing X-51A deals with external heating through the use of a tungsten nosecone and space shuttle-style heat shield tiles on its belly.

A high-power liquid-metal-cooled nuclear plant was devised, which was kept liquid in port through external heating.

(A plasma is "ignited" if the fusion reactions produce enough power to maintain the temperature without external heating.)

The flow of water to an external heating or cooling device allows precise temperature control of the device.

They operated by being electrically heated to about 2000 C. Initially they required external heating because the material is an insulator at room temperature.

Open-loop optimization of the pressure and current density profiles with external heating and current drive sources is routinely used in many devices.

The first and last stages need external heating and cooling respectively.