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[Phys-l] Nano-Particle: Color

From: Tony <physixdude@comcast.net>
Date: Sun, 05 Apr 2009 08:50:12 -0400

I was just reading that when the particles of gold are 100nm it appears
yellow. But when the particles are 25nm, the color changes to red. This is
the way medieval artisans made red stained glass. My question is by what
mechanism do these smaller particles produce this color?
-Tony

Follow-Ups:
- Re: [Phys-l] Nano-Particle: Color
  - From: Brian Whatcott <betwys1@sbcglobal.net>
- Re: [Phys-l] Nano-Particle: Color
  - From: John Denker <jsd@av8n.com>
- [Phys-l] BuckyBall Resonance Absorption (was Nano-Particle: Color)
  - From: Brian Whatcott <betwys1@sbcglobal.net>

References:
- Re: [Phys-l] frequency and wavelength of sound in air
  - From: John Denker <jsd@av8n.com>

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