Filament

Images taken in a controlled environment or with a posed subject. All subject types.

Moderators: rjlittlefield, ChrisR, Chris S., Pau

Olympusman
Posts: 5090
Joined: Sun Jan 15, 2012 12:31 pm

Filament

Post by Olympusman »

Filament from a desktop halogen lamp

Image
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

ChrisR
Site Admin
Posts: 8668
Joined: Sat Mar 14, 2009 3:58 am
Location: Near London, UK

Post by ChrisR »

Appears to show more evaporation, and/or recrystallisation, where the filament gets hotter. As you'd expect. :)
Condensation/epitaxial crystal deposits presumably caused the rough surfaces on the cooler parts.

Something of a lighting challenge on those mirror-like surfaces..
Chris R

Olympusman
Posts: 5090
Joined: Sun Jan 15, 2012 12:31 pm

Halogen lamp

Post by Olympusman »

So is the crystalization the redeposit of evavorated tungsten onto the filament through the halogen cycle?

Mike

The lighting is my domed wraparound ring light.
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

ChrisR
Site Admin
Posts: 8668
Joined: Sat Mar 14, 2009 3:58 am
Location: Near London, UK

Post by ChrisR »

I'm looking into it. There's a few things going on, and there's a lot of mis-information "out there"... :smt108
Chris R

Post Reply Previous topicNext topic