Archive for the ‘Uncategorized’ Category

Flicker is a persistent and frustrating issue, and has been since the first fluorescent and HID lamps were put in service. Complaints of headache, migraine, feelings of ill health, and eye strain are the most common complaints. For some, flicker at 100Hz (Europe/Asia) or 120Hz (North America) is debilitating. Studies have shown that flicker creates reading errors from rapid eye movement changes under sources flickering at under 200Hz – NCBI The effects of flicker on eye movement control, Energy Focus Presentation ‘Lighting Flicker: Effects of Flicker in the Classroom’, including roadway effects – Lux ‘Street light flicker is a new hazard, says watchdog’, CBC – ‘Calgary seizure sufferer worries flickering LED street light will break down again‘.

I will not go into a great deal of detail here on the effects of flicker on human health or the environment. There are hundreds of articles on this topic, by experts in human (more…)

According to marketers of Twitter, Facebook, LinkedIn, Instagram, et al, social media is the engine of change, the foundation for bringing information and real transformation to the people. With Social Media, we will see the world connected and refreshed through the voices of the previously unheard. Social Media is the new light, the symbol of freedom and ultimate new world order founded on the concrete foundation of the first amendment, the true voice of “the People”. It has enabled revolution and advanced the human cause. It all sounds so… amazing and spectacular, if not completely incredible.

Behind the scenes, social media is actually just a software/app product that generates (more…)

Before we get into this topic, let’s remember that history is filled to overflowing with cries of lighting technology destroying human health. When the incandescent lamp emerged, the gas light industry flooded the market with baloney about its harmful effects (including claims that electric lights caused women to get the vapors), in support of the healthful glow of gas lighting (gag). Fluorescent and HID technologies have been under attack from their very first introduction. It’s quite funny to see now the defense of HPS by LED detractors, as it has been the target for criticism for decades. My advise for the apoplectic LED detractors… take a very deep breath and get over it. Every light source carries with it a compromise, including daylight, with undesirable effects we must do our best to mitigate. I suggest to anyone interested in the processes of new lighting technology: An interesting read on the 60 years it took to get lighting off the gas. That said… (more…)

I’ve posted this sort of content before and will do so again. This is the sort of thing I cobble together from found objects, spare parts, experiments in fabrication, and other brain re-setting exercises.

My center all touch-stone and tribute to the mechanical arts that compete at the Bonneville Salt Flats every year.

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passion

Follow your passion and success will follow you

I find these “inspirational” vivications irritating and shallow. At the risk of being pedantic, allow me to explain.

In this case, the words evoke images of everyone loving what they do, and succeeding for it – with the inference of success pointing  to fame and fortune. Certainly, if you look at successful people in the public eye; actors, musicians, athletes, motor sports champions, internet and social media innovators, software developers, wealthy investors, etc…, they (more…)

 

 

50

Money does not buy happiness.

We’ve heard it before, and it is a compelling sentiment. Unfortunately, it is all too easy to assume that the basic needs of sustenance, shelter, security and comfort are a given. These cost money. Without food, protection from the elements, security from harm, and a modest degree of comfort, even a basic level of happiness is not possible. We live in a world (more…)

thumb-meterFor those who attend my presentation on Metering and Meter use at the LED Specifier Summit this Tuesday (9:00AM) here is the related reference information and a copy of handouts for the presentation. Let me know what you think and post your comments or questions here. If you have any questions or wish to discuss this presentation or have a metering issue you’d like some help with, let me know.

Here is a copy of the presentation handout here: LED Spec Summit KLW Meter Presentation

The following are a summary of the links to the meter files content referred to in the presentation:

Meter Review

Flicker Wheel

Flicker Meter Review

LQC Classification Article

LQC Workbook

Color Viewer