chemistry

Lewis Karrick

Lewis Karrick is a chemistry 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 Lewis Karrick rather than just read about it. In short: Lewis Cass Karrick (1890–1962) was an American petroleum refinery engineer, oil shale and coal technologist, and inventor. He patented several coal and oil shale related inventions, and he also refined and perfected a low-temperature carbonization and pyrolysis process for processing coal and other carbonaceous materials, known as the Karrick process.

Key takeaways

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

Reference excerpt

Lewis Cass Karrick (1890–1962) was an American petroleum refinery engineer, oil shale and coal technologist, and inventor. He patented several coal and oil shale related inventions, and he also refined and perfected a low-temperature carbonization and pyrolysis process for processing coal and other carbonaceous materials, known as the Karrick process. Lewis Carrick worked as a consulting engineer for the United States synthetic fuels studies in Utah and Ohio. In 1920s, he improved the low-temperature carbonization and pyrolysis process for processing coal and other carbonaceous materials, which is known as Karrick process. He was also actively involved in the early development of the NTU oil shale retort. In 1930–1938, he worked as a supervisor of the coal products research at the University of Utah. In 1943, Karrick was employed by the United States Geological Survey to work on Alaska and Rockey Mountain Coal Survey. In 1950, he was transferred to the United States Bureau of Mines's Pittsburgh station.

Patents issued to Lewis Karrick U.S. patent 1,835,878 U.S. patent 1,894,691 U.S. patent 1,899,154 U.S. patent 1,901,169 U.S. patent 1,901,170 U.S. patent 1,906,755 U.S. patent 1,913,395 U.S. patent 1,919,636 U.S. patent 1,923,213 U.S. patent 1,938,596 U.S. patent 1,942,650 U.S. patent 1,945,530 U.S. patent 1,950,558 U.S. patent 1,958,918 U.S. patent 2,011,054 U.S. patent 2,268,989 U.S. patent 2,283,556

References

Worked examples

Example 1 — a first encounter with Lewis Karrick

Start with the simplest possible case. Write down what Lewis Karrick claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Lewis Karrick 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 Lewis Karrick 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 Lewis Karrick

In research: Lewis Karrick appears in chemistry 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 Lewis Karrick 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: Lewis Karrick is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1890 births, 1962 deaths, 20th-century American chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Lewis Karrick 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 Lewis Karrick in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lewis Karrick 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 Lewis Karrick out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lewis Karrick in simple terms?

Why does Lewis Karrick matter?

Because it connects several chemistry 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 Lewis Karrick?

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 Lewis Karrick.