NOVELTY - Electrical energy is provided to an electrical device, in an environment having a first and a second temperature region, by providing a second transmitting mechanism (2) for transmitting ambient energy collected in the first temperature region, in communication with a first side of a thermoelectric device (1); and providing a second side of the thermoelectric device in communication with the second temperature region.    USE - The method is for provision of electrical energy to an electrical device, in an environment having a first and a second temperature region, where the temperature difference between the first and second temperature regions is between 0.5-100, preferably 0.5-50 degrees F. (claimed). The first and second temperature regions may be adjacent features of the natural environment that exhibit a pervasive difference of temperature, such as the ground and the air above the ground or the air inside and outside of heating, air-conditioning, or ventilation ducts in buildings. It is useful in remote and less accessible locations, and in any environment having at least 2 regions of different temperature. It is useful outdoors, where the primary heat input is photon radiation from the sun, and in laboratory, where the hot shoe is heated by radiation from a lamp.    ADVANTAGE - The method provides reliable power for long periods; and allows for the generation of electrical energy in environments having very slight temperature differences. It is more efficient and compact, and is functional in simpler and cheaper assemblies.    DETAILED DESCRIPTION - Provision of electrical energy to an electrical device, in an environment having a first and a second temperature region, comprises providing a first transmitting mechanism for transmitting ambient energy collected in the first temperature region; providing a thermoelectric device having a first and a second side; providing a second transmitting mechanism for transmitting the ambient energy collected in the first temperature region, in communication with the first side of the thermoelectric device; and providing the second side of the thermoelectric device in communication with the second temperature region.    DESCRIPTION OF DRAWING(S) - The figure is a schematic drawing of a method of providing electrical energy to an electrical device, in an environment having a first and a second temperature region.    Thermoelectric device (1)    Second transmitting mechanism (2)    Sensor (4)    Storage mechanism (5)    Transmitter (6)    Voltage amplifier (7)    Microprocessor (8)    Data storage mechanism (9)