Home
Care Sheet
Visitor Photos
Product Selection Guides
Bearded Dragon Care Q&A
Forums
New posts
Search forums
Resources
Latest reviews
Search resources
Bearded Dragon Care Q&A
Media
New media
New comments
Search media
What's new
New posts
New media
New media comments
New resources
New profile posts
Latest activity
Members
Current visitors
New profile posts
Search profile posts
Help
Website Help Guides
Contact Us
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Advanced Discussion
Lighting/Enclosures
Physics of why to use metallic (surface) reflectors for UV
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
[QUOTE="kingofnobbys, post: 1900520, member: 81934"] Reflective in visible light doesn't infer reflective in UVA and UVB bands. Unless the reflector has a polished metal or "vapor deposited" aluminium surface , I'd be reluctant to use it as there is a very good chance the surface of the "painted" / powder coated surface will actually absorb UVA & UVB and perhaps reemit the light in the visible bands thereby defeating the purpose of using a reflector / reflector hood partly or even entirely ( all the UVA & UVB may actually be absorbed and fluoresced as visible light ) , see below for basics : [img]https://i.postimg.cc/RhGsX9YL/basics-of-fluorescence-UV-in-visible-glow-out.png[/img] In short - if the reflector is not designed to reflect better than 80% of the UVA & UVB that falls on it's front surface , it's not suitable for use in a reptile enclosure. This means the reflective surfaces are restricted to copper, aluminium, gold or silver. See this for specular reflectivities of some reflective surfaces : [img]https://i.postimg.cc/NGpvNwmn/semilog-graph-of-spectral-reflectivity-of-some-polished-metallic.png[/img] Ref : Evaluation of reflectivity of metal parts InfraMation 2010 Conference Proceedings p210-p243, Z. Sarosi Reminder : UVA, or near UV (wavelengths 315–400 nm) UVB, or middle UV (wavelengths 280–315 nm) This is why I'd be looking for a polished aluminium reflector or a vacuum aluminized surface on the reflector. The substrate behind the reflective surface is irrelevant ( it only forms the focusing shape and holds the reflective surface in place ). [/QUOTE]
Verification
Post reply
Forums
Advanced Discussion
Lighting/Enclosures
Physics of why to use metallic (surface) reflectors for UV
Top
Bottom