ArticleslgStudy

astronomy

Ray Rappaport

Ray Rappaport 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 Ray Rappaport rather than just read about it. In short: Ray Rappaport (May 21, 1922 – December 14, 2010) was an American cell biologist. He did pioneering research using physical manipulations of cells to understand the mechanisms of cytokinesis, the process by which a cell's cytoplasm is divided in two.

Ray Rappaport — main illustration
Ray Rappaport — illustration

Key takeaways

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

Reference excerpt

Ray Rappaport (May 21, 1922 – December 14, 2010) was an American cell biologist. He did pioneering research using physical manipulations of cells to understand the mechanisms of cytokinesis, the process by which a cell's cytoplasm is divided in two. Raymond Rappaport was born in May 1922 in North Bergen, New Jersey, to Raymond and Verna Karper Rappaport. He attended Bethany College (West Virginia). His studies were interrupted by service during World War II in the 5th Service Command, Anti-Aircraft and then in the Army Medical Corps. He finished his undergraduate work at Columbia University, and enrolled in a masters program in Zoology at the University of Michigan. In a soil microbiology course, he met fellow masters student Barbara Nolan, and the two were wed in 1947. He earned his master's degree in 1948, and a PhD from Yale University in 1952. Rappaport began his career as a professor at Union College in Schenectady, New York in 1952. He taught for 35 years and conducted research at the college and for most summers at MDI Biological Laboratory in Salisbury Cove, Maine. Rappaport held several administrative positions at the MDI Biological Laboratory, including director (1956–1959), trustee, and president of the corporation (1979–1981). Rappaport also architecturally designed some of the buildings at the laboratory, including several cottages, laboratory buildings, and the dining hall. He and his wife retired to Maine in 1987, where he continued research year-round at MDIBL. Most of Rappaport's research made use of echinoderm embryonic cells to address the mechanisms of cytokinesis in animal cells, experiments that focused on understanding how the cytokinetic furrow is positioned, and understanding the nature of the stimulus from the mitotic spindle that induced cortical furrowing. With few exceptions, his research was conducted alone or with his wife. Rappaport's research was marked by unusually creative and simple experimental design, often involving physical manipulation of individual cells, for which he devised a number of custom microsurgical tools. Rappaport recognized mechanistic redundancy in cytokinesis, which he characterized in an address at a 2004 conference with, "When I began working on cytokinesis, I thought I was tinkering with a beautifully made Swiss watch, but what I was really working on was an old Maine fishing boat engine: overbuilt, inefficient, never-failed and repaired by simple measures." Rappaport died December 14, 2010, in Bar Harbor, Maine, at the age of 88.

Honors and awards Rappaport was elected as a fellow of the American Association for the Advancement of Science in 1983. A laboratory building at MDIBL is named after him.

References

Further reading Ray Rappaport Chronology: Twenty-Five Years of Seminal Papers on Cytokinesis in the Journal of Experimental Zoology, by Thomas D. Pollard, Journal of Experimental Zoology 301A:9-14 (2004). http://onlinelibrary.wiley.com/doi/10.1002/jez.a.20000/abstract Cytokinesis in Animal Cells, by R. Rappaport (1996), Cambridge University Press. Creativity, Simplicity and Ray Rappaport, by Gary M. Wessel, Molecular Reproduction & Development, Volume 78(4), Apr 1, 2011.

Illustrations

Ray Rappaport: Ray and Barbara Rappaport in 1989
Ray and Barbara Rappaport in 1989

Worked examples

Example 1 — a first encounter with Ray Rappaport

Start with the simplest possible case. Write down what Ray Rappaport 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 Ray Rappaport 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 Ray Rappaport 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 Ray Rappaport

In research
Ray Rappaport 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 Ray Rappaport 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
Ray Rappaport is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1922 births, 2010 deaths, American cell biologists, so understanding it makes those chapters shorter.
In everyday life
Look for Ray Rappaport 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.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Ray Rappaport” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Ray Rappaport in 20 minutes

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

Frequently asked questions

What is Ray Rappaport in simple terms?

Ray Rappaport (May 21, 1922 – December 14, 2010) was an American cell biologist. He did pioneering research using physical manipulations of cells to understand the mechanisms of cytokinesis, the process by which a cell's cytoplasm is divided in two.

Why does Ray Rappaport 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 Ray Rappaport?

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 Ray Rappaport.

Tags

  • 1922 births
  • 2010 deaths
  • American cell biologists
  • Bethany College (West Virginia) alumni
  • Columbia University alumni
  • Fellows of the American Association for the Advancement of Science
  • People from Bar Harbor, Maine
  • Union College (New York) faculty
  • United States Army personnel of World War II
  • University of Michigan alumni
  • Yale University alumni

Keep exploring