Mindcheats - Trucchi per sfruttare la mente Download Graphic Images from the Hillis/Bull Lab Return to "Download Files" Page You are welcome to download the following graphic image of the Tree of Life for non-commercial, educational purposes: Tree of Life (~3,000 species, based on rRNA sequences) (pdf, 368 KB) (see Science, 2003, 300:1692-1697) This file can be printed as a wall poster. Printing at least 54" wide is recommended. Tree of Life tattoo, courtesy of Clare D'Alberto, who is working on her Ph.D. in biology at the University of Melbourne. The organisms depicted in this tattoo are (starting at 4 o'clock and going around clockwise): (1) a cyanobacterium (Anabaena); (2) a radiolarian (Acantharea); (3) a dinoflagellate (Ceratium); (4) an angiosperm (Spider Orchid); (5) a couple species of fungi (Penicillium and a yeast); (6) a ctenophore (comb jelly); (7) a mollusc (nudibranch); (8) an echinoderm (brittle star); and (9) a vertebrate (Weedy Sea Dragon). Here is another great Tree of Life tattoo! Cover of Molecular Systmatics, 2nd ed
Resistors, Volt and Current In this article we will study the most basic component in electronics, the resistor and its interaction with the voltage difference across it and the electric current passing through it. You will learn how to analyse simple resistor networks using nodal analysis rules. This article also shows how special resistors can be used as light and temperature sensors. Imagine the electricity As a beginner, it is important to be able to imagine the flow of electricity. figure 1 Notice how the flow of electricity resembles the flow of water from a point of high potential energy (high voltage) to a point of low potential energy (low voltage). From this analogy you can deduce some rules that you should keep in mind during all your electronics work: I could write a lot more deductions based on this simple analogy, but we can summarize those rules in the most fundamental equations of electronics: Ohm’s law, that you shall learn in the rest of this article. The resistor figure 2 Ohm’s law figure 3 figure 4.A
Outline of basic music theory - www.oscarvandillen.com Professional music theory: an outline of basic music theory. Preface and Chapter 1 of the Outline of basic music theory – by Oscar van Dillen ©2011-2014 The beginner’s learning book can be found at Basic elements of music theory. Overview of chapters: Chapter 1: Introduction Chapter 2: Sound and hearing Chapter 3: Musical notation Chapter 4: Basic building blocks of melody and harmony Chapter 5: Consonance and dissonance Chapter 6: Circle of fifths and transposition Chapter 7: Concerning rhythm, melody, harmony and form Chapter 8: Further study Preface This outline offers a concise and complete overview of basic music theory. In order to speed up consulting this online book, its chapters can as of now be found on separate pages; unfortunately the original one-page version exceeded acceptable download times, because of the length of the total materials presented. © Oscar van Dillen 2011-2014 Chapter 1: Introduction integrating hearing-reading-singing-writing
"The egg" - Page 11 You were on your way home when you died. It was a car accident. Nothing particularly remarkable, but fatal nonetheless. You left behind a wife and two children. And that’s when you met me. “What… what happened?” “You died,” I said, matter-of-factly. “There was a… a truck and it was skidding…” “Yup,” I said. “I… I died?” “Yup. You looked around. “More or less,” I said. “Are you god?” “Yup,” I replied. “My kids… my wife,” you said. “What about them?” “Will they be all right?” “That’s what I like to see,” I said. You looked at me with fascination. “Don’t worry,” I said. “Oh,” you said. “Neither,” I said. “Ah,” you said. “All religions are right in their own way,” I said. You followed along as we strode through the void. “Nowhere in particular,” I said. “So what’s the point, then?” “Not so!” I stopped walking and took you by the shoulders. “You’ve been in a human for the last 48 years, so you haven’t stretched out yet and felt the rest of your immense consciousness. “Oh lots. “Wait, what?” “Sure.
The 13 Most Important Numbers in the Universe In the 17th century, scientists understood three phases of matter—solids, liquids and gases (the discovery of plasma, the fourth phase of matter, lay centuries in the future). Back then, solids and liquids were much harder to work with than gases because changes in solids and liquids were difficult to measure with the equipment of the time. So many experimentalists played around with gases to try to deduce fundamental physical laws. Robert Boyle was perhaps the first great experimentalist, and was responsible for what we now consider to be the essence of experimentation: vary one or more parameter, and see how other parameters change in response. It may seem obvious in retrospect, but hindsight, as the physicist Leo Szilard once remarked, is notably more accurate than foresight.
Helicopter Aerodynamics, calculating thrust loading, disk loading, power loading return to the flight school home page Below, we will demonstrate a method to calculate the theoretical thrust that that a propeller or rotor can generate. Of course in a helicopter, the rotor disk is oriented such that we call its force "lift" rather than thrust, "thrust" would be used in the case of an airplane. On a helicopter, the force of a tail rotor would be best described as thrust. The first step is to measure the diameter of the rotor or propeller and calculate the area in square feet. A [ft^2] = Pi * r^2 -or- A [ft^2] = (Pi/4) * D^2 where r is the radius of the propeller or rotor disk and D is the diameter in feet, of course Pi is the number 3.141592653589793238462643 If we know the area of the disk in square feet, we then need to know the amount of power that is delivered to the rotor. PL [hp/ft^2] = power / A where "power" is the power delivered to the rotor or propeller and A is the area, calculated above. TL [lb/hp]= 8.6859 * PL^(-0.3107) Full series of example calculations: Home
Mercedes Benz S-Class Stretched Limousine Facelift Spied The facelifted Mercedes-Benz S-Class was shown in April this year. Now spies have caught the stretch limousine version of the car being tested. The front end seems to feature a new bumper and LED lights will be part of its appearance. The limo appears to be on some sort of skid pan in what looks like the standard training exercise conducted by Mercedes-Benz for drivers and sometimes owners of these cars. Mercedes-Benz is big on stretched limousines and has a good chunk of the market in many countries. This particular car should be 6.4 metres long and weigh more than two tones. The current S-Class Pullman Guard is powered by a 5.5-litre V12 bi-turbo engine that makes a heady 380kW (517hp) and 830Nm of torque. The Pullman Guard is not just a semi-armoured tank but a proper S-Class as well, which means a luxurious interior suited to the kind of money paid for such a car.