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Classic Books of Science?

xantox 5 pillars of science and link to 80 more (451 comments)

1. Euclid of Alexandria, "Elements" (300 B.C.). 2. Archimedes, "The Works of Archimedes", (ca. 250 BC), translation by Thomas Heath, Dover Publications (2002). [First mathematical physicist on record]. 3. G. Galilei, "Discorsi e dimostrazioni matematiche intorno a due nuove scienze" ("Discourses and Mathematical Demonstrations Relating to Two New Sciences"), Leiden, Louis Elsevier (1638). [Mechanics, kinematics, theory of inertia] 4. I. Newton, "Philosophiae Naturalis Principia Mathematica" ("Mathematical Principles of Natural Philosophy") (1687). [Laws of motion] 5. J.C. Maxwell, "A Dynamical Theory of the Electromagnetic Field", Philosophical Transactions of the Royal Society of London 155, 459-512 (1865). Cfr. "Treatise on Electricity and Magnetism", Dover Publications (1954) [Theory of electromagnetism]. For fundamental scientific works in 20th century, see http://strangepaths.com/resources/fundamental-papers/en/

more than 5 years ago

Total Lunar Eclipse This Weekend

xantox Re:Celestia image (133 comments)

An actual photo of an eclipse was taken from the moon, by the Surveyor 3 mission in 1967. I made an artificial color version of it, showing the red color refracted from Earth atmosphere (coming from all simultaneous sunrises and sunsets) at http://strangepaths.com/total-lunar-eclipse/2007/0 2/27/en/ (click on "Eclipse seen from the moon" to open the image).

more than 7 years ago



The whirling machines replicating our DNA

xantox xantox writes  |  more than 7 years ago

xantox writes "Using computer animation based on current molecular research it is now possible to see how "the book of life" is actually copied in living cells. This animation shows the outstanding "assembly line" of molecular machines, which pull apart the DNA double helix at the speed of a jet engine, and output a copy of each strand. About 1000 nucleotides are synthetized each second, with less than one error per billion. One strand is copied continuously, while the other is copied backwards in loops, one section at a time. The end result is two new DNA molecules."
Link to Original Source

xantox xantox writes  |  more than 7 years ago

xantox writes "There are three strategies to travel 10.5 light-years from Earth to Epsilon Eridani and bring humanity into a new stellar system : 1) Wait for future discovery of Star Trek physics and go there almost instantaneously, 2) Build a relativistic rocket powered by antimatter and go there in 22 years by accelerating constantly at 1g, provided that you master stellar amounts of energy (so, nothing realistic until now), but what about 3): go there by classical means, by building a gigantic Ark of several miles in radius, propulsed by nuclear fusion and featuring artificial gravity, oceans and cities, for a travel of seven centuries — where many generations of men and women would live ? This new speculation uses some actual physics and math to figure out how far are our fantasies of space travel from their actual implementation."


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