physics

Ruby Puryear Hearn

Ruby Puryear Hearn is a physics 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 Ruby Puryear Hearn rather than just read about it. In short: Ruby Louise Puryear Hearn (born April 13, 1940) is an American biophysicist who has dedicated her career to health policy. Her work spans initiatives in maternal, infant, and child health; AIDS; substance abuse; and minority medical education.

Key takeaways

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

Reference excerpt

Ruby Louise Puryear Hearn (born April 13, 1940) is an American biophysicist who has dedicated her career to health policy. Her work spans initiatives in maternal, infant, and child health; AIDS; substance abuse; and minority medical education.

Early life Ruby Louise Puryear was born in Winston-Salem, North Carolina on April 13, 1940. Her family later relocated to the Atlanta area. She is African-American. Ruby attended Skidmore College from 1956 to 1960 majoring in biochemistry. As a senior, she wrote to the editor of the college newspaper, criticizing the National Student Association for not supporting black students' protest of Woolworth's Department Stores. She excelled as a student, regularly appearing on the dean's list and graduating with highest honors in 1960. Ruby was one of twelve students in her class to pursue graduate school. Ruby married Robert Hearn in December 1960, and has two children.

Career Hearn attended Yale University, earning a M.S. and Ph.D. in biophysics. Her dissertation was titled "Thermodynamic Parameters In The RNase-S System." She was a Yale Corporation Fellow from 1992 to 1998. Throughout the 1970s, Hearn worked on development programs to improve the health of at-risk children. In 1980 she began working at Robert Wood Johnson Foundation, the largest healthcare philanthropy in the United States. Hearn spent the majority of her career at the foundation, where her program planning efforts focused on "maternal, infant, and child health; AIDS; substance abuse; and minority medical education." She also acted as the Foundation's liaison to the non-profit community. From 1983 to 2001, Hearn served as Senior Vice President of the Robert Wood Johnson Foundation. Since retiring, she continues to act as Senior Vice President Emerita. Hearn has been active on several boards and committees throughout her lifetime. In 1995, she was on the executive committee for the board of directors of the Special Olympics World Summer Games. Hearn has served on the Science Board of the Food and Drug Administration, as well as the governing Council of the Institute of Medicine. She also served on the board on Children, Youth, and Families for the National Academy of Medicine, and on the Committee on Science, Engineering, and Public Policy for the National Academy of Sciences. The New York Academy of Medicine awarded Hearn the Academy Medal for Exceptional Service to the academy in 2015, recognizing "more than a decade of distinguished service on the Academy's Board of Trustees" and acknowledging Hearn's role as "a critical leader and advocate in creating the Academy's development capability."

Honors & Awards Honoree, 1998, National Academy of Engineering Distinguished Alumni, 2013, Skidmore College Academy Medal for Exceptional Service to the academy, 2015, New York Academy of Medicine

References

Illustrations

Worked examples

Example 1 — a first encounter with Ruby Puryear Hearn

Start with the simplest possible case. Write down what Ruby Puryear Hearn claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 Ruby Puryear Hearn 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 Ruby Puryear Hearn 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 Ruby Puryear Hearn

In research: Ruby Puryear Hearn appears in physics 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 Ruby Puryear Hearn 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: Ruby Puryear Hearn is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1940 births, 20th-century African-American academics, 20th-century African-American women, so understanding it makes those chapters shorter.
In everyday life: Look for Ruby Puryear Hearn 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 Ruby Puryear Hearn in 20 minutes

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

Frequently asked questions

What is Ruby Puryear Hearn in simple terms?

Why does Ruby Puryear Hearn matter?

Because it connects several physics 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 Ruby Puryear Hearn?

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 Ruby Puryear Hearn.