Video: White Light and Color Appearance

Earlier this year our Jason Livingston taped an hour long presentation on White Light and Color Appearance as part of the IES Lighting Education Facility Showcase series for New York School of Interior Design. The presentation is now available to stream! It’s hosted on the IES web site so we can’t show it here, but here’s the link. Have fun!

TM-30 Guidelines Presentation at IES Annual Conference

This year’s IES Annual Conference in Louisville, KY runs from August 8 to 10 and will include two events to help specifiers better understand ANSI/IES TM-30 IES Method for Evaluating Light Source Color Rendition.  

On Friday, August 9th there will be a seminar on the soon to be released TM-30 Annexes E and F, presented  by Michael Royer of PNNL, Tony Esposito, and me.  Annex E is a set of guidelines for TM-30 values for several design intents.  Annes F is an analysis of the research that underpins the Annex E guidelines.

On Friday and Saturday we will also have a demonstration room where specifiers can experience a range of TM-30 values in office and retail settings.

I hope to see you there!

Blue Bunny Ice Cream Parlor Stories

One of our projects, the Blue Bunny Ice Cream Parlor in Le Mars, IA will open on Wednesday the 18th.  The $3M project has received quite a bit of attention in Iowa.  Here are links to some of the stories.  We’ll be posting more as they become available. We’ll also be adding a page to our online portfolio as soon as the photos are ready.

WHO TV (Des Moines)

KTIV (Sioux City)

KMEG (Sioux City)

KCAU (Sioux City)

Radio Iowa

KDSM (Des Moines, syndicated from WHO)

Em3rgeMarketing

Tariffs Impact Lighting Costs

We have been hearing from contractors that many fixture manufacturers, including Acuity Brands, Hubbell Lighting and Eaton, are being forced to raise prices because of the recent tariff increase on Chinese goods.  

The tariff on lighting components and fixtures was 10%.  However, on May 10th the tariff was raised to 25%.  The 15% tariff increase is too much for manufacturers to absorb so they, and ECs, consider this a Force Majeure event (unforeseeable circumstances that prevent someone from fulfilling a contract).  By invoking Force Majeure they are voiding previous pricing and are issuing new quotes showing the cost increases.  

This doesn’t mean that all fixture prices are going to increase by 15%.  The amount of Chinese made components varies by manufacturer and fixture line.  More Chinese components will mean a higher cost increase.  To us this means that until the tariff and trade situation with China settles down lighting designers would do well to keep their clients informed of the varying impact on fixture costs and therefore fixture budgets.

New Definition of Kelvin Goes Into Effect Today

World Metrology Day today.   Today has also been chosen by Bureau International des Poids et Mesures (International Bureau of Weights and Measures) to implement changes to the International System of Units or the SI.  The changes are to the definitions of the kilogram, ampere, kelvin, and mole.  

Of special interest to lighting designers, the Kelvin is now defined “by taking the fixed numerical value of the Boltzmann constant k to be 1.380 649 x 10–23 when expressed in the unit J K–1, which is equal to kg m2 s–2 K–1, where the kilogram, metre and second are defined in terms of h, c and Cs.”

Of special interest to lighting designers, the Kelvin is now defined “by taking the fixed numerical value of the Boltzmann constant kto be 1.380 649 x 10–23 when expressed in the unit J K–1, which is equal to kg m2 s–2 K–1, where the kilogram, metre and second are defined in terms of hc and Cs.”

Yeah, I don’t know what that means, either!  Here’s a link to the full definition and formula.