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Heat is transferred via three methods: conduction (ice cube in your hand), convection (ice cube in your drink), and radiation (light).
The Sun radiantly heats the Earth, by sending out heat as light. The "heat lamps" produce infrared radiation (largely), the food absorbs much of this light, and the temperature of the food increases until it can transfer that extra energy away.
Sourced from SafeSpectrum.com website:
When a fluorescent lamp is turned on, electrons begin to travel at high speed from one cathode to the other, establishing an electric discharge or arc through the Mercury vapor. An arc of this nature, enclosed in a glass tube with internal gas pressure, produces ultraviolet energy.
This ultraviolet energy is converted into visible light by the phosphors, which have the ability to absorb the ultraviolet energy and re-radiate it at longer wavelengths that can be seen as visible light. The color of the visible light produced depends on the chemical composition of the phosphor coating on the inside of the glass tube.
Approximately 60 percent of the input energy in a typical 40 watt fluorescent lamp is converted directly into ultraviolet, with 38 percent going into heat and 2 percent into visible light. Standard phosphor changes about 21 percent of the ultraviolet into visible light with the remaining 39 percent is converted to heat.
The final output of convected and conducted heat from typical fluorescent lamps is very damaging to sensitive perishable fresh foods. It promotes the photochemical processes that contributes to discoloration, oxidation, and food borne pathogen growth and causes the surface of many products discolor, rise in temperature, dry out and become unappetizing.
This is why many supermarkets and grocery retailers install Promolux balanced spectrum low radiation lights in their food cases as it eliminates over 86% of the radiation a regular fluorescent lamp will emit, ensuring foods stay fresher longer.
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∙ 13y ago
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∙ 13y agoyes it does
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What effects comes from tides?
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How do astronauts store their food?
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How does food get to the Iss?
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Why do you need to take food to the moon?
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How do astronauts swallow food?
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Fast food restaurants keep food hot with infrared lamps. The heat is transferred to the food by?
The infrared heat is transferred to the food by radiation.
Food being warmed by infrared light is heat transfer by?
Thermal Radiation.Radiation.There are three main types of heat transfer methods in Thermodynamics. Radiation, Convection, and Conduction. Food warmed by infrared light is heat transfer by radiation. What you feel coming from the infrared lamp is radiant heatenergy.
Fast food restaurants keep food hot with infrared lamps The heat is transferred to the food by?
Its radiation
Heat lamps in a fast food restaurant keep food warm through the process of?
Infrared radiation.
Is it true or false that infrared lamps are used to keep food warm in a restaurant?
True. Infrared lamps are commonly used in restaurants to keep food warm on serving counters or buffet lines. The heat generated by the lamps helps to maintain the temperature of the food, preventing it from cooling down too quickly.
Food being warmed by an infrared light is an example of heat transfer by?
Radiation.
Heating food under a heating lamp is an example of heat transfer by?
convection
Which is most common use for infrared waves?
Infrared light is even used to heat food sometimes - special lamps that emit thermal infrared waves are often used in fast food restaurants! Shorter, near infrared waves are not hot at all - in fact you cannot even feel them. These shorter wavelengths are the onesused by your TV's remote control.
Which is the most common use for infrared waves?
Infrared light is even used to heat food sometimes - special lamps that emit thermal infrared waves are often used in fast food restaurants! Shorter, near infrared waves are not hot at all - in fact you cannot even feel them. These shorter wavelengths are the onesused by your TV's remote control.
When your food in placed under a warming light in a fast food restaurant which type of electromagnetic waves are most likely used to keep your food warm?
Infrared bulbs are implemented in hot lamps used to heat food.
What is infrared oven for baking?
Most ovens bake stuff using two distinct physical phenomena simultaneously: Infrared radiation and convection. both originate from the red hot heating coils/element. In the Infrared oven (Such as some very cheap versions of toaster ovens) there's only one or two infrared sources. these heat using radiation, but there is comparatively much less convection- based heating
Radio waves visible light from the sun infrared rays from the heat lamps the waves that heat food in a microwaveoven ultraviolet rays and x-rays are all considered types of?
plasmas
