Over 4,000 science books now free online - Mankato Homeschooling. The National Academies Press announced this week that all PDF versions of its books will now be available free to the public.
This includes more than 4,000 books on subjects such as agriculture, engineering, space, nutrition, chemistry and more. In a press release, NAP said: As of today all PDF versions of books published by the National Academies Press will be downloadable to anyone free of charge. This includes a current catalog of more than 4,000 books plus future reports produced by the Press. The mission of the National Academies Press (NAP) -- publisher for the National Academy of Sciences, National Academy of Engineering, Institute of Medicine, and National Research Council -- is to disseminate the institutions' content as widely as possible while maintaining financial sustainability.
Topics include: Peppikins added: Stuart Firestein: The pursuit of ignorance. What is science about? PhET: Des simulations gratuites en physique, chimie, biologie, sciences de la Terre et mathématiques. Electromagnetic wave equation. Where ), and permittivity (
A Dynamical Theory of the Electromagnetic Field. "A Dynamical Theory of the Electromagnetic Field" is the third of James Clerk Maxwell's papers regarding electromagnetism, published in 1865.[1] It is the paper in which the original set of four Maxwell's equations first appeared.
The concept of displacement current, which he had introduced in his 1861 paper "On Physical Lines of Force", was utilized for the first time, to derive the electromagnetic wave equation.[2] Maxwell's original equations[edit] In part III of "A Dynamical Theory of the Electromagnetic Field", which is entitled "General Equations of the Electromagnetic Field", Maxwell formulated twenty equations[1] which were to become known as Maxwell's equations, until this term became applied instead to a vectorized set of four equations selected in 1884, which had all appeared in "On physical lines of force".[2] Heaviside's versions of Maxwell's equations are distinct by virtue of the fact that they are written in modern vector notation.
For his original text on force, see: .
Waves. Online Reference & Tools - RapidTables.com. Science and beyond. Creating a wide variety of new holograms. Researchers at North Carolina State University have developed techniques that can be used to create ideal geometric phase holograms for any kind of optical pattern -- a significant advance over the limitations of previous techniques.
The holograms can be used to create new types of displays, imaging systems, telecommunications technology and astronomical instruments. A geometric phase hologram is a thin film that manipulates light. Ant colony responds to predation simulation as a 'superorganism': Ants retreat when scout removed from colony edge, flee when worker removed from nest center. Ants may respond to disturbances in their nest as one highly organized 'superorganism', according to a study published November 11, 2015 in the open-access journal PLOS ONE by Thomas O'Shea-Wheller from the University of Bristol, England, and colleagues.
Fun With Vacuum Chambers. Experience Just How Big the Universe is, in One Mind-Blowing Interactive. You need a more recent version of Adobe Flash Player.
Recently, NASA scientists combined data from the Spitzer and Hubble Space Telescopes to discover the most distant galaxy known to date. The galaxy, named Abell2744 Y1, was formed around 13.2 billion years ago when the universe was extremely young. As the universe is expanding, Abell2744 Y1 is currently closer to 40 billion light years away from us, an astounding distance. Image: Galaxy cluster Abell2744 obtained by the Hubble Space Telescope (Credit: NASA) Het belang van experimenteel onderzoek. Peer review: a flawed process at the heart of science and journals. The Placebo Effect and the Fatally Flawed Medical Studies.
November 20, 2010 | 33,053 views Share A new study analyzed numerous research trials to determine the content of the supposedly "inactive" placebos used for research, but discovered that placebo disclosure is rare.
Researchers examined 176 medical journal studies and found that the vast majority didn't mention the contents of the placebos at all. The study authors argued that placebo ingredients may be important. Experimentation for Improvement. About the Course Would you like to: improve the quality of drinking water;make a stronger concrete or brick;increase the sales from your store;find the right combination of settings for your favourite recipe;improve the quality of your company's product;reduce waste;minimize energy use?
No matter what your area of interest (and there are no limits to the applications!) , it is clear: better experiments save time and money, and lead to improvement. In this course we will learn to use efficient factorial experiments, fractional factorials and response surface methods. Understanding Research Methods. About the Course This course is about demystifying research and research methods.
Scientists have invented a brain decoder that could read your inner thoughts. Scientists have figured out how to read the words of our inner monologue, a finding that could help people who cannot physically speak to communicate with the world.
Image: Alex Mit/Shutterstock Talking to yourself or having mindless internal thoughts is something which most of us can admit to. But imagine if we told you that someone could eavesdrop on your private thoughts? Nervous System Intro. Humans, like all living organisms, can respond to their environment. Humans have two complimentary control systems to do this: the nervous system and the endocrine (hormonal) system. The human nervous system controls everything from breathing and producing digestive enzymes, to memory and intelligence. Nerve Cells [back to top] The nervous system composed of nerve cells, or neurones: A neurone has a cell body with extensions leading off it. There are several differences between axons and dendrites: Physics topics and chapters. Scientists extract images directly from brain.
Researchers from Japan's ATR Computational Neuroscience Laboratories have developed new brain analysis technology that can reconstruct the images inside a person's mind and display them on a computer monitor, it was announced on December 11. According to the researchers, further development of the technology may soon make it possible to view other people's dreams while they sleep. The scientists were able to reconstruct various images viewed by a person by analyzing changes in their cerebral blood flow. Using a functional magnetic resonance imaging (fMRI) machine, the researchers first mapped the blood flow changes that occurred in the cerebral visual cortex as subjects viewed various images held in front of their eyes. Subjects were shown 400 random 10 x 10 pixel black-and-white images for a period of 12 seconds each. For now, the system is only able to reproduce simple black-and-white images. "These results are a breakthrough in terms of understanding brain activity," says Dr.
Taboos of Science. Daily Zen List. Periodic Table of the Elements by WebElements. Microbiology. Scientists Confirm There is a Second, Secret DNA Code That Controls Genes. 7th January 2014. Biophotonic Communications and Information Encoding in Complex Systems - Implications for Consciousness? How does consciousness emerge from inert matter? This may be the hardest part of the "hard problem" that is consciousness.
We have developed pretty solid models for explaining how the various modules and circuits in the brain work together (often in parallel processes) to create awareness and a sense of self. But how does the brain itself, a three pound lump of fatty acids, produce consciousness? We don't really know, but the research presented below offers the beginning of a possible explanation, but only if the various models are combined (integrated) to generate a coherent theory.
Biological Photonic Communication in Cells. Amino: Desktop Bioengineering for Everyone. Inner Life of the Cell (Full Version - Narrated) Scientist creates lifelike cells out of metal. Experiments. Scientists Discover Evolutionary Advantage For Homosexuality. Public Library Of Science. Toezicht en de evolutietheorie - CM Web. Sexy Science. Los 13 mejores vídeos microscópicos. Reports. Science Homework Help. Geologic Time: Graphical Representation of Geologic Time. What is space? In the latest poll of our Science fiction, science fact project you told us that you wanted to know an answer to this question. Concepts of time. Are there parallel universes?
Time evolution. Measuring information and complexity. This article first appeared on the FQXi community website. Information is noisy. Information about information. Information is surprise. Information is complexity. Concept of entropy. Measuring information. Information is bits. Continuum Mechanics. Understanding Electricity - Learn about electricity, current, voltage and resistance. Wireless Electricity.
Electrical Engineering. Ancient Technology. On How to Disagree. Translating an Essay Into an Infographic. Scientists Sign Declaration That Animals Have Conscious Awareness; Just Like Humans. How to Criticize with Kindness: Philosopher Daniel Dennett on the Four Steps to Arguing Intelligently. Seven Warning Signs of Bogus Science. Scientific Argumentation. Persuasive essay or letter. The concept of proof. Rubber Duck Problem Solving. Scientific management. NH Field Investigation Models. 1.3.5. Quantitative Techniques. The Feynman Lectures on Physics. More precision from less predictability: A new quantum trade-off. Scientific Method in Action. Thanks for signing up. Research that matters, results that make sense.