chemistry

Matthew S. Johnson

Matthew S. Johnson 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 Matthew S. Johnson rather than just read about it. In short: Matthew Stanley Johnson (born 14 December 1966) is an American atmospheric chemistry scientist at the Department of Chemistry at the University of Copenhagen. Johnson has made contributions to several areas of chemistry, including kinetics, spectroscopy, isotope effects and application of atmospheric chemistry knowledge to air pollution control systems.

Key takeaways

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

Reference excerpt

Matthew Stanley Johnson (born 14 December 1966) is an American atmospheric chemistry scientist at the Department of Chemistry at the University of Copenhagen. Johnson has made contributions to several areas of chemistry, including kinetics, spectroscopy, isotope effects and application of atmospheric chemistry knowledge to air pollution control systems. Johnson studied chemistry at Macalester College, Saint Paul, Minnesota. In 1995, he was awarded a PhD in Chemistry for his thesis Spectroscopy of Reactive Molecules and Clusters by the California Institute of Technology, Caltech. After working at Bridgeman's, the Boy Scouts of America, Honeywell, Medtronic and Caltech he was awarded Fulbright Fellowship for research at the MAX-Lab accelerator at the Swedish University of Lund, and in 1998 became an assistant professor at the University of Copenhagen. In the field of kinetics he coordinates the Nordic Network for Chemical Kinetics (NoNeCK), he has twelve filed patents and over 140 publications in international peer-reviewed scientific journals. In 2012, Johnson and Harnung published their book titled "Chemistry and the Environment". Johnson has helped establish a series of clean tech companies including Infuser, Airlabs, Rensair, DevLabs, AirScape, Ambient Carbon and Luper Tech.

Selected publications Johnson, M. S., Kuwata, K. T., Wong, C. K., & Okumura, M. (1996). Vibrational spectrum of I−(H2O). Chemical Physics Letters, 260(5-6), 551-557. Ueno, Y., Johnson, M. S., Danielache, S. O., Eskebjerg, C., Pandey, A., & Yoshida, N. (2009). Geological sulfur isotopes indicate elevated OCS in the Archean atmosphere, solving faint young sun paradox. Proceedings of the National Academy of Sciences, 106(35), 14784-14789. Schmidt, J. A., Johnson, M. S., & Schinke, R. (2013). Carbon dioxide photolysis from 150 to 210 nm: Singlet and triplet channel dynamics, UV-spectrum, and isotope effects. Proceedings of the National Academy of Sciences, 110(44), 17691-17696. Lynggaard, C., Bertelsen, M. F., Jensen, C. V., Johnson, M. S., Frøslev, T. G., Olsen, M. T., & Bohmann, K. (2022). Airborne environmental DNA for terrestrial vertebrate community monitoring. Current Biology, 32(3), 701-707. Li, Q., Meidan, D., Hess, P., Añel, J.A., Cuevas, C.A., Doney, S., Fernandez, R.P., van Herpen, M., Höglund-Isaksson, L., Johnson, M.S. and Kinnison, D.E., 2023. Global environmental implications of atmospheric methane removal through chlorine-mediated chemistry-climate interactions. Nature Communications, 14(1), p. 4045.

References

External links Home page Matthew S. Johnson publications indexed by Google Scholar

Worked examples

Example 1 — a first encounter with Matthew S. Johnson

Start with the simplest possible case. Write down what Matthew S. Johnson 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 Matthew S. Johnson 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 Matthew S. Johnson 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 Matthew S. Johnson

In research: Matthew S. Johnson 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 Matthew S. Johnson 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: Matthew S. Johnson is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1966 births, 21st-century American inventors, Academic staff of the University of Copenhagen, so understanding it makes those chapters shorter.
In everyday life: Look for Matthew S. Johnson 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 Matthew S. Johnson in 20 minutes

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

Frequently asked questions

What is Matthew S. Johnson in simple terms?

Why does Matthew S. Johnson 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 Matthew S. Johnson?

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 Matthew S. Johnson.