Mirage Patio Heater

patio heater
A patio heater (also called a mushroom or umbrella heater) is an appliance for generating radiant heat for outdoor use.

mirage
A mirage is a naturally occurring optical phenomenon in which light rays are bent to produce a displaced image of distant objects or the sky. The word comes to English via the French mirage, from the Latin mirare, meaning "to look at, to wonder at".
An optical illusion caused by atmospheric conditions, esp. the appearance of a sheet of water in a desert or on a hot road caused by the refraction of light from the sky by heated air
an optical illusion in which atmospheric refraction by a layer of hot air distorts or inverts reflections of distant objects
Something that appears real or possible but is not in fact so
something illusory and unattainable