Example image of eyePlorer eyePlorer map for 'Refrigeration': Heat Cooling Cryogenics Second law of thermodynamics Laser Magnetism Work (physics) Ice Dugout (shelter) Straw Yakhchal Ice house (building) Potassium nitrate Sodium nitrate Frederic Tudor New England Thermal insulation William Cullen Boiling point Diethyl ether Vacuum Benjamin Franklin Oliver Evans Vapor-compression refrigeration Ammonia Michael Faraday Jacob Perkins John Gorrie Gas compressor Isentropic process United States Patent and Trademark Office Geelong, Victoria James Harrison (engineer) Argentina Australasia Australia Dunedin (ship) New Zealand South America United States William Soltau Davidson Absorption refrigerator Ferdinand Carré Icebox Thaddeus S. C. Lowe Hydrogen Refrigerator Carl von Linde Meat packing industry Armour and Company