How much science is too much?

How much science is too much?

We’re working on a long list for the Em4 model that now includes problems of color and chroma (relative brightness). Another branch of science to explore. Here’s a possible media combination, and the technology involves color and human perception. We want...

Beautiful spring Sunday, with two kinds of worms.

Beautiful spring Sunday, with two kinds of worms.

I went into work early and finished testing our valve and metering array for the Em4. It’s working, and at least conceptually finished. We may have figured out our media color scheme as well, we’ll see. Here’s the ugliest combination for fun. Spring...

An Emriver out, Em4 design/build, more spring.

An Emriver out, Em4 design/build, more spring.

Jessie and I cranked on Em4 pump testing, electronics, flow measurement, and the dye injection system. We are getting some hard lessons in hydraulics. The piped and centrifugal pump version has important differences from the open-channel kind I know well. Today it was...

Pumping water in the parking lot (Em4 test).

Pumping water in the parking lot (Em4 test).

We tested a new pump and flowmeter for the Em4 today. Taking advantage of a beautiful spring day, we set up outside. True to first tries, the flowmeter didn’t work and the valve manifold cut our pump output to 1/3 of what we needed. But we got most of it...

Emriver to NY State, the Em4 takes shape.

Emriver to NY State, the Em4 takes shape.

Jesse and I worked on the Em4’s control cart today. It’ll hold the main pump, flowmeters, valves, UV sterilizer, and a few other things. Still a big pile of expensive hardware, but soon it’ll be a very nice instrument. Jesse has done a great job on...