The thickness of the foil determines opacity. Opaque means that no light passes through (translucent is like oiled paper and transparent is like clear glass). If sufficiently thin, a foil can serve as a filter for light. Ford Taurus windshields were designed with a metal coating which reflected a good portion of incident light. Astronaut visors are coated with a metal coating which is enough to block dangerous levels of solar radiation, but it is thin enough to allow visibility.
Hope this helps!
Äbdﷲ
2008-06-06 02:38:13 UTC
Silver foil is truely an opaque material. No doubt about it!
Marvelous Marv
2008-06-06 02:38:56 UTC
Aluminum foil Yes, Mylar foil, No. Opaque means that light can't pass through it.
mike s
2008-06-06 02:38:40 UTC
Yes. Opaque materials are materials you can't see through, as opposed to transparent materials like plastic wrap.
sage
2008-06-06 02:42:43 UTC
Slight conflict in definitions:
Opaque: Does not allow light to pass through it.
(and from Princetown University below)
Does not allow the transmission or reflection of light.
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At a functional level, I would say it is opaque as you could use enough of it to darken a room by covering the windows.
Hope this helps.
anonymous
2008-06-06 02:38:33 UTC
Yes it is:) hold it up to light and if u dont see any light coming through it, then it isnt transparent or translucent, therefore... opaque!:)
anonymous
2008-06-06 02:39:35 UTC
Absolutley not.
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