File talk:Wire-grid-polarizer.svg

Senseless?

Note: the grid should be rotated 90° clockwise, otherwise it is senseless.—Preceding unsigned comment added by 201.231.174.28 (talk • contribs) 15:48, 22 July 2008 (UTC)

It is a while since I did any physics, so I am happy to stand corrected, but as far as I can see the diagram, and the grid are correct.

Polarisation does NOT occur because a wave can wiggle through or not.

Polarisation occurs because electromagnetic radiation is absorbed. Absorbtion will occur most strongly when the electrons in the polarising material can oscillate the most. The electrons that can oscillate the most are those which can move in same direction as the electromagnetic radiation is oscillating. Therefore the polariser stops electromagnetic radiation which is oscillating parallel to the polariser's material, and lets radiation pass which is perpendicular to the polariser's material, because perpendicular radiation cannot excite the polariser's electrons and hence is not absorbed.

Pee Tern (talk) 05:21, 29 August 2008 (UTC)

Yes, the grid orientation shown is correct, for just the reason you describe.--Srleffler (talk) 16:50, 20 March 2009 (UTC)

Flaw in image

As noted by another user, there is a flaw in this image. The diagonally-polarized waves that are shown have vertical components that pass through the polarizer. Since the vertically-polarized wave has the same amplitude before and after the polarizer, the drawing implies that only this wave is transmitted, and the other waves shown do not contribute. --Srleffler (talk) 16:56, 20 March 2009 (UTC)

Stimmt die Anordnung des Polarisationsfilters?

Hallo, stimmt dieses Bild überhaupt? Müsste der Polarisationsfilter nicht um 90 Grad gedreht sein?

Begründung:

Auf der Internetseite: http://www.vision-doctor.de/polarisationsfilter.html ist ein Bild des Polarisationsfilters dargestellt

Allerdings ist da das Gitter (bzw. der Polarisationsfilter) genau anders herum wie hier(um 90 Grad gedreht) angeordnet (http://de.wikipedia.org/wiki/Polarisator)  !!!!

Was ist nun richtig? Da ich Studiere und eine Physikarbeit über Polarisation von Mikrowellen schreiben muss, ist mir dieser Unterschied aufgefallen. Durch die unterschiedliche Polarisationsfilteranordnung bin ich nun jetzt leider ein bisschen in Verwirrung geraten.

Es wäre nett, wenn jeand meine Aussagen überprüfen könnten. Vielleicht hat sich da auf Wikipedia ein fehler eingeschlichen (oder ist mein Gedankengang verkehrt?).

Ich würde mich sehr freuen wenn ihr mir bescheid geben könnten welche Antwort nun richtig ist. Vielen Dank! mfg

Read the comment by PeeTern above. This is correct for the indicated direction of the electrical field of microwaves through a wire grid. /Pieter Kuiper (talk) 08:46, 17 May 2010 (UTC)