
akindomac
Get flash to fully experience Pearltrees
The Sign of the Four - Wikipedia, the free encyclopedia
The Sign of the Four (1890), also called The Sign of Four , is the second novel featuring Sherlock Holmes written by Sir Arthur Conan Doyle . Doyle wrote four novels and 56 stories starring the fictional detective. The story is set in 1887.APOD: 2012 March 12 - The Scale of the Universe Interactive
Main Page - The TV IV
WatchList
BEING CRAZY IS NOISY | More Intelligent Life
John Sterns is diagnosed with schizoaffective disorder (a co-diagnosis of schizophrenia and bipolar disorder), chronic depression and chronic anxiety. He describes a lifetime of fighting demons ... Special to MORE INTELLIGENT LIFE I.Motion Mountain - The Free Physics Textbook for Download
Stellarium 0.11.2 is a stable version that introduces some new features and closes 47 bug and wishlist reports. A lot of work has been done on making translatable text that wasn't localized before. This includes most of the text used by the default plug-ins, landscapes, countries, script names and descriptions. The Oculars plug-in now has an optional control panel with buttons for those affected by the "missing menu" bug, but it needs to be enabled in the Oculars configuration window.
Stellarium
Why Maxwell Couldn’t Explain Gravity
The early theories of electricity and magnetism developed by Coulomb, Ampere, and Oersted, were based on the Newtonian model of gravity, which is to say, they were based on the premise that isolated objects moving in the void of empty space exert forces on each other even when separated by some distance (rather than just when they are in direct contact). This theoretical approach proved very successful, and was developed to a high level, culminating in the work of Weber, Neumann, and others by around 1849. However, simultaneously with those developments, Faraday was investigating the same phenomena of electromagnetism from a completely different perspective, reverting to the idea of contact forces exerted through some kind of substance permeating all of space. This approach was taken up by Maxwell, who in 1855 published a paper, “On Faraday’s Lines of Force”, in which he sought to express Faraday’s ideas in mathematical form.15 Fascinating TED Talks for Physics Students | Online Universities
50 Greatest Guitar Solos | NME.COM
Chosen by Ken Mochikishi Horne, The Bronx/Mariachi El Bronx "As far as guitar solos go, this song brought it all together for me. The myth is that he stole this guitar phrase from his piano player without giving him credit for years. All my favorite guitar players - Keith Richards, Johnny Thunders, Link Wray, Wilko Johnson, Nicke Royale - play this simple, catchy, and memorable guitar phrase in one form or another. It is easy to play, but of course no one can play it with...Khan Academy
Matrices, vectors, vector spaces, transformations. Covers all topics in a first year college linear algebra course. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.Smarthistory.org is a free and open, not-for-profit, art history textbook. Part of the Khan Academy, we use multimedia to deliver unscripted conversations between art historians about the history of art. We are seeking contributors—especially for canonical non-Western material and other survey topics not yet covered. We welcome comments, feedback and corrections. More >
Smarthistory
Geometrical construction of the Vitruvian Man
Geometrical construction of the Vitruvian Man by Leonardo da Vinci The Vitruvian Man is a world-renowned drawing created by Leonardo da Vinci around the year 1487 It is accompanied by notes based on the work of Vitruvius. The drawing, which is in pen and ink on paper, depicts a nude male figure in two superimposed positions with his arms and legs apart and simultaneously inscribed in a circle and square. The drawing and text are sometimes called the Canon of Proportions or, less often, Proportions of Man. It is stored in the Gallerie dell'Accademia in Venice, Italy, and, like most works on paper, is displayed only occasionally. The drawing is based on the correlations of ideal human proportions with geometry described by the ancient Roman architect Vitruvius in Book III of his treatise De Architectura.News
Interesting Videos
Stuff
Physcs
In chess we must to be carefull in each situation, also when the game is almost won or nearly lost. The danger is always around the corner. I'm agree with Aagard when he says , in his books , that we must play like humans and don't like machines.

