Many of the Sections welcome non-members to their meetings. A semi-annual technical publication, The Journal of the IES, is also sent to members and features the latest technical developments and research in illumination. Larger libraries will have some or all of these publications. These publications are excellent references and contain much useful information. However, most members are happy to share their expertise and experience, subject only to the fact that they are professionals and must make a living from their profession.
Outdoor lighting represents a relatively small percentage of all lighting in use.
It may be reproduced for non-commercial usage provided that credit is given to IDA .