Emerald Tablet An imaginative 17th century depiction of the Emerald Tablet from the work of Heinrich Khunrath, 1606. The Emerald Tablet, also known as the Smaragdine Table, or Tabula Smaragdina, is a compact and cryptic piece of Hermetica reputed to contain the secret of the prima materia and its transmutation. It was highly regarded by European alchemists as the foundation of their art and its Hermetic tradition. Textual history[edit] The text of the Smaragdine Tablet gives its author as Hermes Trismegistus ("Hermes the Thrice-Greatest"), a legendary Hellenistic[1] combination of the Greek god Hermes and the Egyptian god Thoth.[2] Despite the claims of antiquity, it's believed to be an Arabic work written between the sixth and eighth centuries.[3] The oldest documentable source of the text is the Kitāb sirr al-ḫalīqa (Book of the Secret of Creation and the Art of Nature), itself a composite of earlier works. The tablet text[edit] Newton's translation[edit] Theatrum Chemicum translation[edit] C.G.
Quantum mysteries John Gribbin For seventy years, physicists have worried about what quantum mechanics means. They can use quantum physics, to be sure; witness the successful designs of lasers and computer microchips, and the understanding of molecules that makes genetic engineering possible. In fact, few physicists worry about such things. The archetypal example of the quantum mysteries is the "experiment with two holes", where the measured position of a single electron that passes through two holes in a screen can only be explained in terms of the wave function travelling through both holes at once and interfering with itself. Imagine that we have a source which will emit a single quantum particle in a random direction (ordinary radioactive nuclei do exactly this, so there is nothing special about the source). So far, simple enough. But a giant leap in what might be called quantum philosophy has recently been taken by the American physicist John Cramer. It works like this.
Darknet - The Darkside - Ethical Hacking, Penetration Testing & Computer Security Physics for the 21st Century Course Overview Welcome to Physics for the 21st Century: an on-line course that explores the frontiers of physics. The 11 units, accompanied by videos, interactive simulations, and a comprehensive Facilitator's Guide, work together to present an overview of key areas of rapidly-advancing knowledge in the field, arranged from the sub-atomic scale to the cosmological. About This Course | Using This Site
7th Grader mimics Nature 13 year old copies Nature to Improve Solar Performance Thirteen year old Aidan Dwyer was walking in the woods in Upstate New York in the winter and noticed a spiral pattern to tree branches. Aidan realized the tree branches and leaves had a mathematical spiral pattern that could be shown as a fraction. Aidan's backyard in Northport, NY. The 7th grader next wondered why nature used such a pattern? Aidan discovered that the Fibonacci pattern helps deciduous trees, in higher latitudes, efficiently track the Sun and collect the most sunlight even in the thickest forest, on the cloudiest days. The American Museum of Natural History has awarded Aidan a Young Naturalist Award for 2011. See the detailed description of his discoveries on the Museum's website: *www.amnh.org In late 2012, early 2013, Aidan builds a larger model: Postscript: Many have questioned why Aidan did not measure power output from the solar cells, instead he only measured voltage, without a load attached ("open circuit").
Introduction to quantum mechanics Non-technical introduction to quantum physics Many aspects of quantum mechanics are counterintuitive[3] and can seem paradoxical because they describe behavior quite different from that seen at larger scales. In the words of quantum physicist Richard Feynman, quantum mechanics deals with "nature as She is—absurd".[4] Features of quantum mechanics often defy simple explanations in everyday language. One example of this is the uncertainty principle: precise measurements of position cannot be combined with precise measurements of velocity. Quantum mechanics helps us understand chemistry, because it explains how atoms interact with each other and form molecules. History[edit] Maxwell's unification of electricity, magnetism, and light in the 1880s led to experiments on the interaction of light and matter. Evidence of quanta from the photoelectric effect[edit] Hot objects radiate heat; very hot objects – red hot, white hot objects – all look similar when heated to the same temperature.
Droit aux buttes Jardins en buttes à l'écocentre du périgord On les voit fleurir un peu partout, elles représentent une vraie révolution dans notre relation au sol et notre façon de cultiver. Symboles par excellence de l’agroécologie mais surtout de la permaculture (avec la poule), elles n’en sont pourtant qu’un élément parmi d’autres. Elles représentent l’antithèse du jardin à la papa : un espace riche et vivant, résistant à la sécheresse, à l’excès de pluie, un espace multidimensionnel extrêmement productif qui peut même être auto-fertile. C’est Emilia Hazelipp qui semble avoir importé la culture sur butte en France. Mais quels sont les avantages de cette culture étrange qui demande pourtant un gros travail de mise en place? tout d’abord, elle évite de se baisser. - limiter l’enherbement, - limiter l’évaporation de l’eau et donc de presque supprimer l’arrosage (hors plantation bien sûr), Le non travail du sol. crédits Robert Morez, cliquez sur l’image pour l’agrandir Creuser une tranchée à 35 cm. J'aime :
A Lazy Layman's Guide to Quantum Physics That's an easy one: it's the science of things so small that the quantum nature of reality has an effect. Quantum means 'discrete amount' or 'portion'. Max Planck discovered in 1900 that you couldn't get smaller than a certain minimum amount of anything. This minimum amount is now called the Planck unit. The meaning of quantum physics is a bit of a taboo subject, but everyone thinks about it. To make it all a bit more respectable, it is better to say 'ontology' than 'meaning' -- it's the same thing. Copenhagen Interpretation (CI) This is the granddaddy of interpretations, championed by the formidable Niels Bohr of Copenhagen university. The CI has a bit of a cheek calling itself an interpretation, because it essentially says "thou shalt not ask what happens before ye look". When you do try to take Copenhagen seriously you come to the conclusion that consciousness and particle physics are inter-related, and you rush off to write a book called The Dancing Wu-Li Masters. Consistent Histories
10 Brilliant Social Psychology Studies Ten of the most influential social psychology experiments explain why we sometimes do dumb or irrational things. “I have been primarily interested in how and why ordinary people do unusual things, things that seem alien to their natures.Why do good people sometimes act evil?Why do smart people sometimes do dumb or irrational things?” –Philip Zimbardo Like famous social psychologist Professor Philip Zimbardo (author of The Lucifer Effect: Understanding How Good People Turn Evil), I’m also obsessed with why we do dumb or irrational things. The answer quite often is because of other people — something social psychologists have comprehensively shown. Each of the 10 brilliant social psychology experiments below tells a unique, insightful story relevant to all our lives, every day. Click the link in each social psychology experiment to get the full description and explanation of each phenomenon. 1. The halo effect is a finding from a famous social psychology experiment. 2. 3. 4. 5. 6. 7. 8. 9. 10.
The Everett Interpretation This FAQ shows how quantum paradoxes are resolved by the "many-worlds" interpretation or metatheory of quantum mechanics. This FAQ does not seek to that the many-worlds interpretation is the "correct" quantum metatheory, merely to correct some of the common errors and misinformation on the subject floating around. As a physics undergraduate I was struck by the misconceptions of my tutors about many-worlds, despite that it seemed to resolve all the paradoxes of quantum theory . The objections raised to many-worlds were either patently misguided or beyond my ability to assess at the time , which made me suspect (confirmed during my graduate QFT studies) that the more sophisticated rebuttals were also invalid. I have attempted, in the answers, to translate the precise mathematics of quantum theory into woolly and ambiguous English - I would appreciate any corrections. See "Does the EPR experiment prohibit locality?" eg "In quantum field theory the wavefunction becomes an operator".
EMOTIV INSIGHT: Optimize your brain fitness & performance by Tan Le Our mission to empower individuals to understand their own brain and accelerate brain research globally was set into motion with the launch of this Kickstarter campaign for Emotiv Insight. Over the course of this campaign, you joined our community and pledged to change how people think about their brain and how we could use brainwear to improve how we live, work, and play. Thanks to you, we are making the Emotiv Insight a reality! Thank you again for being such an awesome community! The human brain, our most advanced organ, is an intricate and complex network of connections. Emotiv Insight is a sleek, 5 channel, wireless headset that reads your brainwaves and a mobile app that translates those signals into meaningful data everyone can understand. We’ve leveraged our knowledge and experience to create the next generation Brainwear™ that tracks and monitors your brain activity and gives you insight into how your brain is changing in real time. We are pioneers in this field. More details: