Color, Turbidity and Philosophy

When we humans look at objects we describe them in terms of color. We say that an apple is red or the sky is blue. To us color is an attribute just as surely as its mass or dimensions. But the fact is that color is a pure human construct. Take away the human and it does not exist. What we perceive as color is really just our brains interpretation of the range of wavelengths that the object reflects or (like Christmas tree lights) emits and that our retinas perceive. When a beam of white light strikes a red delicious apple, it absorbs most of the blue and green wavelengths.

Why Colleges have Failed our Kids

My company has had a fruitful relationship with the University of Massachusetts of Lowell since we started operations 5 years ago. As a small company we don't have the luxury of hiring all the engineering talent we need. So we hire a U Mass engineering intern to do bread-and-butter type work and contract out the higher level engineering services as needed. U Mass has outstanding internship and coop programs and their students can "hold their own" against those from my alma mater MIT.

The Biggest Misconception in pH Measurement

The pH probe is the most ubiquitous analytical sensor on earth. Even people who never took a science class in college have heard of pH (though few truly understand what it means). In our industry nearly every person I talk to understands that water is "neutral" at and only at pH 7. Very few understand what a value of 7 means but they know it is smack dab in the middle of the acid-base continuum. It's the pH of pure water and it is a sacred number in the same way that one hour is always 60 minutes. Except that it's not sacred at all.

What Would Marcus Do?

What do women's clothing, Key Lime pie and toys have in common? They are all businesses that Marcus Lemonis turned around. Marcus is the star of the CNBC reality show, The Profit. He takes a major equity stake in failing businesses and turns them around. He may only have 30% ownership but, as he states in every show, he's "100% in charge." I have no doubt that the shows are scripted so that the "reality" fits into a great television plot. But the lessons for any business owner are indispensable. And ALL of the businesses that Marcus fixes face the same problems.

The Green Way and the Gray Way

I love trade journals. I subscribe to about a dozen devoted to water and wastewater. I firmly believe that one can become an expert in the world of water just by spending an hour every day reading them. The most common type of article is the spotlight article, or case study, in which the author presents a problem that a water or wastewater facility faces and the design solution its engineers construct to meet that challenge.

Why It took four weeks to write two paragraphs

I'm really under the gun. I am writing a book on how water quality instrumentation works and it is months overdue. I have a mandate from my editor that I must have a first draft complete by August. Or else.... And yet, I took 4 precious weeks without writing a single sentence and I used that time just so I could write two new paragraphs.

What I Learned from Apple - The Good, the Bad and the Wild Horse

I've been a Mac user since 1986. I plunked down about five grand for a Mac II with a 13" monitor that awed everyone who looked at the floating balls in living color on the monitor's start-up screen. Steve Jobs coming back with his Unix operating system was like the second coming. Between my family and my job I've purchased or approved of the purchase of dozens of Macs.

What I Learned from Apple - The Good, the Bad and the Ugly

I've been a Mac user since 1986. I plunked down about five grand for a Mac II with a 13" monitor that awed everyone who looked at the floating balls in living color on the monitor's start-up screen. Steve Jobs coming back with his Unix operating system was like the second coming. Between my family and my job I've purchased or approved of the purchase of dozens of Macs.

AM-UST-mini

The AM-UST mini is arguably the most compact, most rugged and most cost-effective level transducers on the market. It is perfect for level measurement less than 13 feet. When connected with the 2300 Controller it is a complete process automation system for level control.
Inside the Mini is a full feature ultrasonic transducer that outputs directly either a 4-20 mA analog signal or two Modbus over RS485 digital signals. The unit is powered by a 15 -24 VDC power supply.

Today's Batteries — They're (Much) Older than You Think

Last year I visited the Thomas Edison National Historical Park in New Jersey with my college roommate friend and my two teenage boys. In it are Edison’s home, laboratories and factory where the Genius of Menlo Park changed technology and history. The inventions that Edison invented are overwhelming. Edison was not just the most prolific inventor of all time; he was a manufacturer who successfully brought one idea after another into the marketplace. He's my hero.

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