INFRARED ELECTRIC HEATERS. 200 WATT AQUARIUM HEATER. WALL HEATER THERMOSTAT.
Infrared Electric Heaters
(Electric Heater) A furnace is a device used for heating. The name derives from Latin fornax, oven. The earliest furnace was excavated at Balakot, a site of the Indus Valley Civilization, dating back to its mature phase (c. 2500-1900 BC).
Are most common on portable spa systems. They are a resistive type heater that heats the water as it flows over the element. Water flow is critical to proper operation. Without flow, if the heater should come on, it will burn up very quickly and can even damage pipes.
(electric heater) a small electric space heater
'Infrared (IR)' light is electromagnetic radiation with a wavelength between 0.7 and 300 micrometres, which equates to a frequency range between approximately 1 and 430 THz.
The infrared region of the spectrum; infrared radiation
the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared"
having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end; "infrared radiation"; "infrared photography"