science

James W. Queen & Company

James W. Queen & Company is a science 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 James W. Queen & Company rather than just read about it. In short: James W. Queen & Company was an optical and scientific instrument company located at 924 Chestnut Street, Philadelphia, Pennsylvania, with a branch office in New York City, and active in various forms from 1853 to 1925, and subsequently as Gray Instrument Company until 1952.

Key takeaways

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

Reference excerpt

James W. Queen & Company was an optical and scientific instrument company located at 924 Chestnut Street, Philadelphia, Pennsylvania, with a branch office in New York City, and active in various forms from 1853 to 1925, and subsequently as Gray Instrument Company until 1952. In 1853 Mr James W. Queen began in the city of Philadelphia a small business in optical and philosophical apparatus. In 1859 he joined with Mr. Samuel L. Fox, and under their personal supervision and management, the business steadily developed. In 1870 Mr James W. Queen retired, and Mr. S.L. Fox continued the business under the title of James W. Queen & Co. It continued under this name until 1893, when it was incorporated as Queen & Co. John G. Gray reorganized the business in 1912 under the name Queen-Gray Co., and it remained that way until Mr. Gray's passing in 1925, at which point it changed its name to Gray Instrument Company. By 1888 the company had six departments:

physical and chemical engineering ophthalmic microscopical magic lantern photographic Among the instruments and apparatus made were air pumps, astronomical instruments, induction coils, Holtz machines, gyroscopes, drawing and mathematical instruments, surveying instruments, and instruments for electrical measurements. In 1901 Queen and Co. manufactured a large induction coil for the Japanese government that could create sparks 32 inches long, to be used for wireless telegraphy.

References

National Museum of American History collection Archived 2014-01-03 at the Wayback Machine James W. Queen & Co. catalogs, Smithsonian Institution collection American Artifacts description

Illustrations

Worked examples

Example 1 — a first encounter with James W. Queen & Company

Start with the simplest possible case. Write down what James W. Queen & Company claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 James W. Queen & Company 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 James W. Queen & Company 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 James W. Queen & Company

In research: James W. Queen & Company appears in science 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 James W. Queen & Company 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: James W. Queen & Company is common in secondary-school and first-year university syllabi. It links to neighbouring topics Instrument-making corporations, Manufacturing companies based in Philadelphia, so understanding it makes those chapters shorter.
In everyday life: Look for James W. Queen & Company 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 James W. Queen & Company in 20 minutes

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

Frequently asked questions

What is James W. Queen & Company in simple terms?

Why does James W. Queen & Company matter?

Because it connects several science 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 James W. Queen & Company?

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 James W. Queen & Company.