Recent content by Dyn Doeth

If the crystals filter the colours from the fluorescent tubes, (through thin film interference) then the colour should gradually fade right? But what i observe is more like an on/off phenomenon. If I change the angle of reflection it is white-red-white-green. With no other colours in between.

I couldn't see the colours in sunlight. But maybe I just couldn't get the angle right because it was cloudy. I will go back to see what happens on a CD. I thought all TL tubes used the same phosphor, so I thought that a common spectrum of a tube light might suffice. the glass plate is...

This explanation only explains the colour of a film when the light is perpendicular to the surface. When the angle of reflection changes, the path length through the film changes as well. I did not observe any other colours except some red/magenta at ~45°. If thin-film interference were to be...

I have a monolayer of zeolite crystals on glass with the thickness of the zeolites about 800nm. When I look at the reflection of fluorescent light bulbs on this monolayer, the reflection is white except at specific angles. At around 45 deg, the colour appears red/magenta and at a lower angle...