Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


Light transmison thru Glass

Light transmison thru Glass

Light transmison thru Glass

what kinds of things determine a glass's transmisivity? what is a reasonalble tollerance for the glass's transmission?

RE: Light transmison thru Glass

It's a bit hard to answer your question as I'm not sure what you're looking for.

If you are asking what reduces the tranmission of light through glass, the most basic answer would be thickness, composition, and texture.

If you are asking about soda lime float glass specifically (i.e. window glass), most of the tranmission losses in the visible spectrum come from reflection at the surfaces (~8.5%) and absorption of light by iron in the glass.  Hence high transmission float glass is called low iron glass.  Anti-reflective coatings on the glass surfaces can reduce the reflection losses (as can some textures).   


Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close