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About
Our Organization
About the IES
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Administration
IES Staff
IES Board
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Information
Newsroom
Annual Report
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Events Home
Events Calendar
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Featured Events
IES26 The Lighting Conference
SALC 2026
Special Events
Light for Life® Virtual Symposium Series
Light + Intelligent Building 2027
Illumination Awards & Gala
Education
Research
About IES Research
Publications
FIRES
LEUKOS
Past Projects
Education
eLearning Portal
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Request IES CEU/AIA-LUs
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Teachers of Lighting Workshop
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Information
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About
Our Organization
About The IES
Diversity & Inclusion
Society Awards
Administration
IES Staff
IES Board
IES Committees
Information
Newsroom
Annual Report
Resources
Membership
Membership
Become a Member
Sustaining Membership
Emerging Professionals
IES Committees
Grants & Scholarships
University Program
Events
Information
Events Home
Events Calendar
Sponsorship
Featured Events
IES26 The Lighting Conference
SALC 2026
Special Events
Light for Life® Virtual Symposium Series
Light + Intelligent Building 2027
Illumination Awards & Gala
Sections
Sections
Section Directory
Section Resources
Region and District Chairs
Research & Education
Research
About IES Research
Publications
FIRES
LEUKOS
Past Projects
Education
eLearning Portal
Upcoming Webinars
Request IES CEU/AIA-LUs
LC Study Group
Education FAQs, Forms & Guidelines
Learn About IES Files
eLearning Portal Partnerships
Teachers of Lighting Workshop
Standards
Standards
Purchase Standards
Browse Library of Lighting Standards
Nomenclature & Definitions
Join a Technical Committee
Information
Standards Newsletter
IES Standards Process
Cont. Maint + IES Standards List
IES Standards in Public Review
Toolbox
IES Standards Toolbox
My Lighting Library
My Illuminance Selector
My Reference Retriever
LD+A
Store
Donate
Join
Sign In
Donate
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Search the IES Website
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Paula D. Ziegenbein
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