What is Thermal imaging used for ?

Thermal imaging is used in many industries.
Builders can use it to establish where heat is escaping from a building to improve building techniques and insulation.
Police and the defence forces use thermal imaging to detect people.
Mechanic's can use thermal imaging to detect faulty components in machinery.
Fire fighters use it to detect the source of a fire and the presence of people trapped in a building.
Electricians can use thermal imaging to detect heat in electrical wiring and fixings.