The temperature of the environment surrounding a given point.
For example, the air temperature reported by the weatherman is
the ambient temperature of the air at the location of the
instrument used to measure the air temperature. The temperature
of the air, atmosphere or other fluid that completely surrounds
the apparatus, equipment or the workpiece under consideration.
For devices which do not generate heat, this temperature is the
same as the temperature of the medium at the point of device
location when the device is not present. For devices which do
generate heat, this temperature is the temperature of the medium
surrounding the device when the device is present and generating
heat. Allowable ambient-temperature limits are based on the
assumption that the device in question is not exposed to
significant radiant-energy sources such as sunlight or heated
surfaces. The average temperature of the battery's surroundings.
The temperature of the air or other medium that surrounds the
components of a thermal sys