Don Lincoln

Don Lincoln (born 1964) is an American experimental physicist, science communicator, and author of popular books about physics. He is a Fellow of both the American Physical Society and the American Association for the Advancement of Science.

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Quotes

Two well-regarded measurements for the expansion rate of the universe disagree, leaving cosmologists very puzzled. It may be that something large has been overlooked in our theory of the Big Bang. This discrepancy is called the Hubble tension and it has led to a very interesting conversation within the cosmology community.
- (April 2020)"Is Modern Cosmology in Crisis?". The Physics Teacher 58 (4). DOI:10.1119/1.5145465.

The history of particle physics can be considered nothing less than a huge triumph for science. Over the course of a little more than a century of effort, our understanding of the world of atomic and subatomic physics went from a vague understanding of atoms, to one that is much more detailed. Early in this hundred-year-long period, we learned about electrons (1897), then how they circle a dense nucleus (1911), followed by the discovery of the protons (1917) and neutrons (1932) that form the nucleus. From the 1930s onward, researchers used both cosmic rays and particle accelerators to discover antimatter (1932), and particles that don’t exist in atoms (e.g., the muon [1936] and neutrino [1956], as well as a huge number of others).
- (October 2021)"Particle accelerators and their triumphant history". The Physics Teachwe 59 (7): 521–524. DOI:10.1119/10.0006457.

One of the first scientific concepts taught to children is the idea that matter can be a solid, liquid, or gas. Indeed, if you were to ask most American adults how many phases of matter there are, the most likely answer you would get is three. It would not be unreasonable to consider this to be common knowledge.
Yet the scientifically savvy know of far more phases of matter than the familiar three. Plasma is another, as is superfluid. And there are many more that exist at extreme temperatures or pressures. Change the conditions under which matter finds itself, and it will act in unexpected ways.
- (October 2024)"Quark/Gluon Plasma: When Protons Melt". The Physics Teacher 62: 550–554. DOI:10.1119/5.0235509.

Encyclopedic article on Don Lincoln on Wikipedia