Search results
Results from the WOW.Com Content Network
T. O'Conor Sloane (c. 1920s) promotional pamphlet (c. 1920s)Thomas O'Conor Sloane (November 24, 1851 – August 7, 1940) was an American scientist, inventor, author, editor, educator, and linguist, perhaps best known for writing The Standard Electrical Dictionary and as the editor of Scientific American, from 1886 to 1896 and the first science fiction magazine, Amazing Stories, from 1929 to 1938.
Of Worlds Beyond is a collection of essays about the techniques of writing science fiction, edited by Lloyd Arthur Eshbach. It was first published in 1947 by Fantasy Press in an edition of 1,262 copies.
Example Bjerrum plot: Change in carbonate system of seawater from ocean acidification.. A Bjerrum plot (named after Niels Bjerrum), sometimes also known as a Sillén diagram (after Lars Gunnar Sillén), or a Hägg diagram (after Gunnar Hägg) [1] is a graph of the concentrations of the different species of a polyprotic acid in a solution, as a function of pH, [2] when the solution is at ...
In recent years, Casti has shifted his literary focus to science fiction. In 1998 he published The Cambridge Quintet, a volume of scientific fiction involving Ludwig Wittgenstein, Alan Turing, J. B. S. Haldane, C. P. Snow and Erwin Schrödinger in a fictional dinner-party conversation centered about the question of the uniqueness of human ...
A strong acid, such as hydrochloric acid, at concentration 1 mol dm −3 has a pH of 0, while a strong alkali like sodium hydroxide, at the same concentration, has a pH of 14. Since pH is a logarithmic scale, a difference of one in pH is equivalent to a tenfold difference in hydrogen ion concentration.
The Henderson–Hasselbalch equation can be used to model these equilibria. It is important to maintain this pH of 7.4 to ensure enzymes are able to work optimally. [10] Life threatening Acidosis (a low blood pH resulting in nausea, headaches, and even coma, and convulsions) is due to a lack of functioning of enzymes at a low pH. [10]
Descriptive complexity is a branch of computational complexity theory and of finite model theory that characterizes complexity classes by the type of logic needed to express the languages in them. For example, PH , the union of all complexity classes in the polynomial hierarchy, is precisely the class of languages expressible by statements of ...
Benford has an identical twin brother, James (Jim) Benford, with whom he has collaborated on science fiction stories. [10] Both got their start in science fiction fandom, with Gregory being a co-editor of the science fiction fanzine Void. Benford has said he is an atheist. [11] He has been a long-time resident of Laguna Beach, California. [8]