engineering

Lawrence Experiment Station

Lawrence Experiment Station is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lawrence Experiment Station rather than just read about it. In short: The Lawrence Experiment Station, now known as the Senator William X. Wall Experiment Station, was the world's first trial station for drinking water purification and sewage treatment.

Key takeaways

Lawrence Experiment Station belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Lawrence Experiment Station to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lawrence Experiment Station from memory before moving on to harder problems.

Reference excerpt

The Lawrence Experiment Station, now known as the Senator William X. Wall Experiment Station, was the world's first trial station for drinking water purification and sewage treatment. It was established in 1887 in Lawrence, Massachusetts. A new, 22,000-square-foot (2,000 m2) building opened in 1954 at 37 Shattuck Street. In 1975, the station was designated as a National Historic Civil Engineering Landmark by the American Society of Civil Engineers. In 1993, the facility was renamed after state senator William X. Wall, who had lobbied for the construction of the new station in the 1950s.

History Lawrence Station was established by the Massachusetts State Board of Health, based on the earlier work of scientists William Thompson Sedgwick and Theobald Smith who understood the linkage of water-borne germs to specific diseases. In 1886 the Massachusetts legislature required its Board of Health to adopt water pollution standards, which led to creation of the station under the direction of Hiram Francis Mills, the "Father of American Sanitary Engineering". MIT professors William Ripley Nichols, Ellen Swallow Richards, and Thomas Messinger Drown also played important early roles. Allen Hazen and George W. Fuller were in charge of some of the earliest research on sewage treatment and drinking water filtration. At first, the station's main mission was to develop practical methods for treating wastewater. Its task was to determine the effect of filtration as compared to natural oxidation, which it decided by experiments in its chemistry laboratory. During this time, Sedgwick and students invented techniques for identifying and quantitatively analyzing the microorganisms in water and sewage. These studies helped set the standards in Massachusetts, other states, and other countries. A bacteriological laboratory was added two years later. In 1893 when a typhoid epidemic (Salmonella typhi) arose along the Merrimack River, the City of Lawrence began filtration of river water using Mills' slow sand filters, thus becoming the first American city to filter its water for disease prevention. This filtering led to marked reductions in typhoid fever rate and overall death rate in the city. The facility is now part of the Massachusetts Department of Environmental Protection (DEP) - Division of Environmental Laboratory Sciences. It is responsible for providing technical and laboratory support to all DEP programs. In 2011, a $30 million, 13,000 square foot expansion was completed. The new LEED certified addition also houses the state occupational safety laboratory.

References

External links

ASCE landmark page Photographic history of Lawrence Experiment Station

Illustrations

Worked examples

Example 1 — a first encounter with Lawrence Experiment Station

Start with the simplest possible case. Write down what Lawrence Experiment Station claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lawrence Experiment Station before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lawrence Experiment Station ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lawrence Experiment Station

In research: Lawrence Experiment Station appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Lawrence Experiment Station in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Lawrence Experiment Station is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1887 establishments in Massachusetts, Buildings and structures in Lawrence, Massachusetts, Historic Civil Engineering Landmarks, so understanding it makes those chapters shorter.
In everyday life: Look for Lawrence Experiment Station outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Lawrence Experiment Station in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lawrence Experiment Station means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Lawrence Experiment Station out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lawrence Experiment Station in simple terms?

The Lawrence Experiment Station, now known as the Senator William X. Wall Experiment Station, was the world's first trial station for drinking water purification and sewage treatment.

Why does Lawrence Experiment Station matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lawrence Experiment Station?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lawrence Experiment Station.