Results 321 to 330 of about 694,724 (374)
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JAMA: The Journal of the American Medical Association, 1971
To the Editor.— The EDITORIAL, Microwave Ovens ( 215 :1661, 1971), contains much misleading information. My ophthalmological examinations of more than 1,000 microwave workers yielded 42 with pathognomonic signs of microwave cataract ( posterior capsular opacification), a form of thermal injury.
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To the Editor.— The EDITORIAL, Microwave Ovens ( 215 :1661, 1971), contains much misleading information. My ophthalmological examinations of more than 1,000 microwave workers yielded 42 with pathognomonic signs of microwave cataract ( posterior capsular opacification), a form of thermal injury.
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Microwave Ovens—Out of the Kitchen
Journal of Chemical Education, 2001We are all aware of the advantages cooking or heating meals in a microwave oven can offer, but we may be less familiar with what this technology brings to the field of chemistry. This paper reviews the applications of microwaves in the chemical laboratory, including their use in undergraduate laboratory classes.
Cresswell, S.L., Haswell, S.J.
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Absorption of microwaves in the microwave oven
The Physics Teacher, 2001A microwave oven is used to demonstrate that, in comparison to liquid water, both ice and liquid nitrogen are almost completely transparent to microwaves. The difference in transparency is also simply explained.
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“Snowing” Graphene using Microwave Ovens
Advanced Materials, 2018AbstractDeveloping a simple and industrially scalable method to produce graphene with high quality and low cost will determine graphene's future. The two conventional approaches, chemical vapor deposition and liquid‐phase exfoliation, require either costly substrates with limited production rate or complicated post treatment with limited quality ...
Han Dong +7 more
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Rapid growth of onion-like carbon nanospheres in a microwave oven
, 2016Onion-like carbon spheres (OLCSs) were synthesized by heating a mixture of naphthalene and graphite powder inside a kitchen microwave oven for ∼1 min under atmospheric conditions.
R. Bajpai +3 more
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The Reliability of Magnetrons for Microwave Ovens
Journal of Microwave Power and Electromagnetic Energy, 1986Problems pertaining to the operation of magnetrons in microwave ovens have been identified using failure mode-effect analysis (FMEA) and other analytical techniques. Life test conditions have been established which tend to induce these failure modes. This investigation has focused on electron emission deterioration and vacuum leakage as two of the more
Yoji Kanuma +3 more
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Physics Education, 2003
This is the first of two articles about the physics of microwave ovens. This article deals with the generation of microwaves in the oven and includes the operation of the magnetrons, waveguides and standing waves in resonant cavities. It then considers the absorption of microwaves by foods, discussing the dielectric relaxation of water, penetration ...
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This is the first of two articles about the physics of microwave ovens. This article deals with the generation of microwaves in the oven and includes the operation of the magnetrons, waveguides and standing waves in resonant cavities. It then considers the absorption of microwaves by foods, discussing the dielectric relaxation of water, penetration ...
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More experiments with microwave ovens
Physics Education, 2004Microwave ovens can be used to perform exciting demonstrations that illustrate a variety of physics topics. Experiments discussed here show superheating, visualize the inhomogeneous heating that takes place in a microwave and also show how to use a mobile phone to detect radiation leaking from the oven.
Detlef Karstädt +2 more
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2009
: This chapter begins with a brief history of the microwave oven since its invention in 1946. The chapter will review the many design variations of microwave ovens that can have an impact on product or package design, uniform heating and product testing.
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: This chapter begins with a brief history of the microwave oven since its invention in 1946. The chapter will review the many design variations of microwave ovens that can have an impact on product or package design, uniform heating and product testing.
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Journal of Microwave Power, 1978
AbstractThe role of standardization of certain factors of microwave oven design and performance is assuming greater importance as sales continue to increase.Current test standards are discussed, as well as those under development, for radio frequency interference, power output, energy efficiency, as well as for various performance attributes such as ...
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AbstractThe role of standardization of certain factors of microwave oven design and performance is assuming greater importance as sales continue to increase.Current test standards are discussed, as well as those under development, for radio frequency interference, power output, energy efficiency, as well as for various performance attributes such as ...
openaire +2 more sources