Is it possile to reflect microwave radiation?

by jointli on 15 August, 2011

in microwave oven radiation

Is there any material that can reflect microwave radiation such as from a microwave oven?

Metals reflect microwaves very well. That is how radar works. Solid sheets, even mesh, if the holes are small enough. That is why there is a metal mesh in the door window.

Because visible light has a much shorter wavelength than microwave, the light passes through the holes but the microwaves are reflected back in the oven.

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{ 5 comments… read them below or add one }

August 15, 2011 at 3:00 am

Not my area, but I believe microwaves are reflected by most hard. none porous substances. The more dense the material, the more reflection.
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August 15, 2011 at 3:23 am

Metals reflect microwaves very well. That is how radar works. Solid sheets, even mesh, if the holes are small enough. That is why there is a metal mesh in the door window.

Because visible light has a much shorter wavelength than microwave, the light passes through the holes but the microwaves are reflected back in the oven.
References :

August 15, 2011 at 3:41 am

most metal reflect microwaves,
References :
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August 15, 2011 at 3:48 am

Metals will reflect microwaves.
References :

August 15, 2011 at 4:00 am

It is possible to reflect any kind of radiation. Any metal will work in this case. Aluminium foil will work fine, even a mirror should do the job. In the case of microwave oven a mesh will work too, but as you go up in frequency the penetration ability of the radiation increases and a solid shield must be used.
References :

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