chemistry

Harry G. Day

Harry G. Day 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 Harry G. Day rather than just read about it. In short: Harry G. Day (October 8, 1906 – September 8, 2007) was an American chemist and professor.

Key takeaways

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

Reference excerpt

Harry G. Day (October 8, 1906 – September 8, 2007) was an American chemist and professor. The Harry G. Day Lectureship in the chemistry building at Indiana University in Bloomington, Indiana, was established in 1988, and a lecture hall was dedicated to him in 1991.

Research While at Indiana University in the 1950s, Day, J.C. Muhler, and W.H Nebergall conducted research on the effects of fluorides in the reduction of dental cavities and tooth decay. The result of their research was Crest toothpaste, the first dentifrice toothpaste containing tin(II) fluoride.

Organizational involvement While working in the chemistry department at Indiana University Bloomington, Day was involved in the chemistry fraternity, Alpha Chi Sigma Epsilon chapter. He was the Epsilon chapter advisor for several years including 1942, 1962-1968. Day went on to make contributions to the American Institute of Nutrition, American Institute of Biological Chemists (where he took on the position of president), and the Indiana Academy of Science. He was also part of the American Chemical Society in 1954. Day has also been involved with Kiwanis and Bloomington Hospital, where he was the first male to serve on the Women's Board. As an active Republican, he contributed on the Bloomington City Council in the 1960s. Dr. Harry G. Day has been assisting First United Methodist Church as a trustee. Elected to the city council, he served in that party for eight years up until 1971.

Honours In 1990, Day received the President's Medal of Excellence from Indiana University. In 2002, he received the Kuebler Award. This award is named after John Kuebler, and is given to a member for outstanding service to the Alpha Chi Sigma fraternity and to the field of chemistry. Day was named a Sagamore of the Wabash in 2004. The Sagamore of the Wabash is an honorary award created by the state of Indiana during the term of Governor Ralph F. Gates. For his contributions to the chemistry department, Indiana University and the city of Bloomington, elected Dr. Harry G. Day to the Monroe County Hall of Fame.

References

External links Wentworth, Rupert (2006). "Harry G. Day — A Century of Life" (PDF). Alumni Journal.

Worked examples

Example 1 — a first encounter with Harry G. Day

Start with the simplest possible case. Write down what Harry G. Day 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 Harry G. Day 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 Harry G. Day 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 Harry G. Day

In research: Harry G. Day 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 Harry G. Day 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: Harry G. Day is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1906 births, 2007 deaths, 20th-century American chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Harry G. Day 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 Harry G. Day in 20 minutes

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

Frequently asked questions

What is Harry G. Day in simple terms?

Harry G. Day (October 8, 1906 – September 8, 2007) was an American chemist and professor.

Why does Harry G. Day 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 Harry G. Day?

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 Harry G. Day.