Work
Ted Harrison had broad interests, and he published more than 200 papers, primarily in astrophysics and cosmology, but also in space sciences, high energy physics, plasma physics and physical chemistry. He was an elegant writer with a passion for the history of ideas. His books (cf. especially his text Cosmology) illustrated points of physics or cosmology with many literary, philosophical, and historical references.
The work of Harrison and of Soviet physicist Yakov Borisovich Zel'dovich on structure formation from primordial density perturbations in the cosmic plasma has led to the general use of the term Harrison-Zel'dovich spectrum for primordial random fluctuations characterised by a scale-invariant power spectrum.
Harrison was fascinated with Olber's Paradox (the night sky is dark despite the vast number of stars in the universe). In 1964 he published detailed calculations that solved the paradox by concluding that stars do not generate enough energy to illuminate the entire sky. In 1987 he published a book, Darkness at Night, mulling over the Paradox and its rich history. This book clarified that the lack of energy is not primarily because the universe is expanding, but rather because the stars and galaxies have had only about 15 billion years to radiate, and do not have sufficient energy to keep radiating for much longer. Darkness at Night lays out how Harrison discovered that Edgar Allan Poe's essay Eureka anticipated this conclusion, and that Lord Kelvin had reached a very similar conclusion in a 1901 article ignored for 80 years until Harrison drew attention to it.
Harrison's text Cosmology: The Science of the Universe describes the problem of the cosmic edge of the universe by quoting 5th century BCE soldier-philosopher Archytas, who questioned what occurs as a spear is hurled across the outer boundary of the universe.
His final book, Masks of the Universe (2nd ed., 2003), questions current perceptions of reality, asking whether present cosmology, with ordinary matter, dark matter, plus dark energy, is yet only another "mask" obscuring a Universe which will remain perforce forever unknown to humans.
Read more about this topic: Edward Robert Harrison
Famous quotes containing the word work:
“It was always the work that was the gyroscope in my life. I don’t know who could have lived with me. As an architect you’re absolutely devoured. A woman’s cast in a lot of roles and a man isn’t. I couldn’t be an architect and be a wife and mother.”
—Eleanore Kendall Pettersen (b. 1916)
“Men should not labor foolishly like brutes, but the brain and the body should always, or as much as possible, work and rest together, and then the work will be of such a kind that when the body is hungry the brain will be hungry also, and the same food will suffice for both; otherwise the food which repairs the waste energy of the overwrought body will oppress the sedentary brain, and the degenerate scholar will come to esteem all food vulgar, and all getting a living drudgery.”
—Henry David Thoreau (1817–1862)
“There is only one art, whose sole criterion is the power, the authenticity, the revelatory insight, the courage and suggestiveness with which it seeks its truth.... Thus, from the standpoint of the work and its worth it is irrelevant to which political ideas the artist as a citizen claims allegiance, which ideas he would like to serve with his work or whether he holds any such ideas at all.”
—Václav Havel (b. 1936)