astronomy

John K. Frost

John K. Frost is a astronomy 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 John K. Frost rather than just read about it. In short: John Kingsbury Frost (c. 1922 – 1990) was an American physician specializing in the field of cytopathology - the microscopic study of individual body cells to detect cancer and other diseases. The first area of the body to be studied in this way was the female genital tract, using the Pap smear invented by Georgios Papanikolaou.

Key takeaways

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

Reference excerpt

John Kingsbury Frost (c. 1922 – 1990) was an American physician specializing in the field of cytopathology - the microscopic study of individual body cells to detect cancer and other diseases. The first area of the body to be studied in this way was the female genital tract, using the Pap smear invented by Georgios Papanikolaou. Frost and other physicians expanded the field to allow for cytopathologic evaluation of the lung, bladder, and many other body sites. Frost was best known as a teacher of cytopathology. He organized and directed a school of cytotechnology and created and led a postgraduate Institute to teach the techniques to physicians.

Early life and education Frost was born in Sioux Falls, South Dakota. He attended the University of California, Berkeley for his undergraduate degree. He received his medical degree from the University of California, San Francisco. He served in the United States Army for five years, 1948 to 1953, attaining the rank of lieutenant colonel.

Career In 1956 he took a position as an assistant professor of obstetrics and gynecology at Johns Hopkins Hospital in Baltimore, Maryland, where he remained for his entire career until his retirement in 1989. In 1959 he was the founding head of the division of cytopathology and continued to direct the division for 30 years. He was the author of 347 publications, including the definitive monograph on the subject of cytopathology, The Cell in Health and Disease, published in 1969 with a second edition in 1986. In addition to diagnostic services and professional training, his laboratory also carried out research, notably in the creation of the dyes (stains) which are used to highlight the characteristics of the cells so they can be evaluated. The most popular nuclear stain, the Gill hematoxylin series, was created in Frost's cytopathology department in the 1970s by cytotechnologist Gary W. Gill. Frost died August 29, 1990, in Baltimore. The cause of death was from complications of therapy of lung cancer, although he was a lifelong nonsmoker.

Recognition The division he founded and led at Hopkins is now named the John K. Frost Cytopathology Laboratory. In 1979 he received the Maurice Goldblatt Cytology Award from the International Academy of Cytology. It is the highest award in the field. The citation described him as "the most prominent educator and teacher of cytopathology in the United States."

References

Worked examples

Example 1 — a first encounter with John K. Frost

Start with the simplest possible case. Write down what John K. Frost claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 John K. Frost 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 John K. Frost 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 John K. Frost

In research: John K. Frost appears in astronomy 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 John K. Frost 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: John K. Frost is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1920s births, 1990 deaths, 20th-century American people, so understanding it makes those chapters shorter.
In everyday life: Look for John K. Frost 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 John K. Frost in 20 minutes

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

Frequently asked questions

What is John K. Frost in simple terms?

Why does John K. Frost matter?

Because it connects several astronomy 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 John K. Frost?

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 John K. Frost.