*Attention:* The IES website will be temporarily unavailable from May 9th to May 13th for site updates. We apologize for any inconvenience and will provide an update closer to the time. Thank you for your continued support of the Illuminating Engineering Society.
DonateJoinMy IES

very short flashes

[11.1.9]

In signal lighting: Flashes of millisecond or microsecond duration.

 

NOTE: This definition was changed in ANSI/IES RP-16-17 Addendum 4.

« Back to Definitions Index