Peirce, G. R. Engineer, Champaign, Illinois.
Smith, Robert Leroy Formerly, University of Illinois at Urbana-Champaign, Urbana, Illinois.
- Temperature and energy spectrum
- Design of heating systems
- Voltage and lifetime
- Exposure to radiation
- Additional Readings
A special type of incandescent lamp that is designed to produce energy in the infrared portion of the electromagnetic spectrum. The lamps produce radiant thermal energy which can be used to heat objects that intercept the radiation. All incandescent lamps have radiation in three regions of the electromagnetic spectrum, the infrared, the visible, and the ultraviolet. An infrared lamp with a filament operating at 2500 K will release about 85% of its energy in the form of thermal radiant energy, about 15% as visible light, and a tiny fraction of a percent as ultraviolet energy. The amount of infrared radiation produced by a lamp is a function of the input wattage of the lamp and the temperature of its tungsten filament. For most infrared lamps, the thermal radiation will be about 65–70% of the input wattage. A typical 250-W infrared lamp radiates about 175 W of thermal energy.
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 9000 highly qualified scientists and 43 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information