Science and Tech Ads. This 78-page book on physics is selling more copies than 'Fifty Shades of Grey' Apparently, Italians find physics more sexy than S&M – at least for reading material. Since it was published last September, Carlo Rovelli's book Seven Brief Lessons on Physics has sold more copies in Rovelli's native country, Italy, than E.L. James' smash hit Fifty Shades of Grey, The Spectator reported.
And the translated English copy has quickly risen to become Penguin's fastest-selling science debut in the publishing company's history. So what's Rovelli's secret? After all, it's not like physics is a topic that people flock toward. Well, for starters, Rovelli is an expert on the topic. Rovelli is also an avid writer of popular science, so he has a knack for transforming complex ideas into clear, simple concepts. "Rovelli has a rare knack for conveying the top line of scientific theories in clear and compelling terms without succumbing to the lure of elaborate footnotes," Nicola Davis, the commissioning editor of Tech Monthly, reported in The Guardian.
Return to the Haikyo- Asama Volcano Museum | Michael John Grist. This was my second time to go to the Asama Volcano Museum. The first was on my first haikyo road trip back in 2007- back when I was packing only a cameraphone to shoot with and cared far more about the explore than I did about the photography. It was an amazing place to ‘discover’ for ourselves, our nerves on high wires the whole time as the ethereal music rang out from the rooftop. In the two intervening years the balance of my interests has changed, with photography coming to the fore, perhaps naturally, over exploring. The Asama Museum has been shot pretty extensively though, and it’s becoming a challenge to see it in a new light. From the fore, in HDR.
The volcano museum was much as we left it that first time. All the doors were unlocked, the big fenced-off generator still hummed away, music still played on the observation deck, and the mysterious orange antenna room remained as mysterious as ever. The observation building, with orange antenna room. One of my favorites in this set. Critical thinking web. Nuclear Power Plant Demonstration. By Henrik Eriksson The control-room operators of the Kärnobyl nuclear power plant are telecommuting and are running the plant through the Web. However, the mean time between failure for the components of Kärnobyl is not great. Try to keep the reactor stable when component failures occur! (Click here for instructions.) Brief Instructions Use sequence buttons 1-3 to run a failure-simulation sequence. Detailed Applet Description Nuclear Power Information Preparing for a Disaster Copyright © 1995-1996 Linköping University, Linköping, Sweden. Clocks. Metric (or Decimalized) Time The day is divided into 100 parts (centidays), plus decimal fraction.
Think of it as a percent of the day. The "Universal Metric Time" is based on the International Date Line. Much more information at my Guide to Metric (or Decimilized) Time. Hexadecimal Time The day is divided up into 65536 parts and written in hexadecimal (base-16) notation (A=10, B=11 ... F=15). Much more information about this can be found at Intuitor Hexadecimal Headquarters. Octal Time Octal Time uses a base-8 system (digits 0-7). Base64 Time Base-64 uses ASCII characters (in ascending order: A-Z, a-z, 0-1, +, and /). Binary Time Like hexadecimal time, the day is divided into 65536 parts, only we display it as a binary number using squares for bits, here using dark squares to represent 1 and white for 0.
This can be viewed as a variation of hexadecimal time by dividing it into four 2x2 blocks of squares, each block corresponds to a digit of hexadecimal time. Mayan Time. Watch the synchronisation of 32 metronomes (with an explanation behind it) - The Feed Blog. (CBS News) A little over a year ago I posted a video on The Feed that showed a physics principle on display in the form of five metronomes that synched to each other with time and the right conditions. And it was very cool to watch we all learned something from it. So how about a quick refresher course, this time with 32 metronomes. Watch physics unfold in the video above. The science-in-action clip was posted by YouTube user IkeguchiLab , and for the explanation behind it, we refer back to the poster of the prior video, abahraminasab , who writes: Here you go: metronomes (or "pendula") when on table, oscillate with random phases, since that is how they started and they are "uncoupled" (no energy/information flows from one to other so they do not "know" each other.)
So while not as obvious as in the prior video, it seems the table the 32 metronomes are on allows for enough movement to let this process take effect and lead to them synching with one another. Search for element 113 concluded at last. ScienceDaily (Sep. 26, 2012) — The most unambiguous data to date on the elusive 113th atomic element has been obtained by researchers at the RIKEN Nishina Center for Accelerator-based Science (RNC). A chain of six consecutive alpha decays, produced in experiments at the RIKEN Radioisotope Beam Factory (RIBF), conclusively identifies the element through connections to well-known daughter nuclides. The search for superheavy elements is a difficult and painstaking process. Such elements do not occur in nature and must be produced through experiments involving nuclear reactors or particle accelerators, via processes of nuclear fusion or neutron absorption.
Since the first such element was discovered in 1940, the United States, Russia and Germany have competed to synthesize more of them. With their latest findings, associate chief scientist Kosuke Morita and his team at the RNC are set follow in these footsteps and make Japan the first country in Asia to name an atomic element. Stunning images of snowflakes under a (frozen) microscope [20 pictures] Researchers at Beltsville Agricultural Research Center have gathered samples of snow from around the country and are studying them under a microscope. To keep the flakes in their original shape, they’re viewed on a surface that has been chilled to -170 Celsius, or -224 Fahrenheit. (The microscope they use is understatedly labeled “low-temperature.”) Here are some of the amazing images coming from their research… On an interesting side note, man-made snow doesn’t vary in shape like natural snow does, and, in fact, doesn’t even look like natural snow at all when magnified.
It’s just little blobs… (via The Daily Mail) BELT DRIVE TURNTABLE Philips Thorens Verdier Melco Micro Mercure NOTES DIY. Mr. Yamamura and the Melco Turntables A few years earlier, in 1981, I stumbled upon the Melco turntables which were for the first time on display in Paris. I had an interesting conversation with Mr. Yamamura. With his firm Belco in London he imported these heavy turntables which boasted of platters weighing which boasted of platters weighing up to 35 kg. In comparisson Verdier's platter weighs 20 kg. Platter Damping and Constant Speed In the process Alexander and I had experienced all sorts of construction problems that needed specific solutions: damping, decoupling, mechanical and acoustical feedback, constant speed, etc.
Introduction to Astrophysics. 10 Enormous Numbers. Technology One of the first questions that kids often ask is “What is the biggest number?” This question is an important step in transitioning to a world of abstract concepts. The answer is of course that numbers are generally considered endless, but there gets to be a point were numbers become so big that there really is no point in having them, they have no real importance outside of the fact that yes technically they do exist.
To make a list like this I could simply write down a massive number for the first number, and then write +1, +2, +3 and so on for the rest of the list. Instead I chose to take out 10 numbers that do have some effect on the world and place them in ascending order, giving a brief explanation as to what they are and how they have some relevance on the world, albeit very small relevance, especially when compared to the size of the number itself. The third largest number on this list, the number of all the plank volumes in the universe, consists of 185 digits. The (Zoomable) Milky Way. 1242a - VISTA gigapixel mosaic of the central parts of the Milky Way. This striking view of the central parts of the Milky Way was obtained with the VISTA survey telescope at ESO’s Paranal Observatory in Chile.
This huge picture is 108 200 by 81 500 pixels and contains nearly nine billion pixels. It was created by combining thousands of individual images from VISTA, taken through three different infrared filters, into a single monumental mosaic. These data form part of the VVV public survey and have been used to study a much larger number of individual stars in the central parts of the Milky Way than ever before.
Because VISTA has a camera sensitive to infrared light it can see through much of the dust blocking the view for optical telescopes, although many more opaque dust filaments still show up well in this picture. This image is too large to be easily displayed at full resolution and is best appreciated using the zoom tool. Credit: ESO/VVV Survey/D. The Wall of Time. Physics Downloads. Download Physics Notebooks UC Physics Lecture Demo PDF files: Click on the links below to download the files. The following PDF file is the entire Physics Lecture Demo Catalog: UC Physics Lecture Demos Index UC Physics Lecture Demo Catalog (30 MB PDF file) The following PDF files are individual chapters from the UC Physics Lecture Demo Catalog: (for people with slower connections, or who just want an individual category of demonstrations.)
Note: In each PDF file there are links between the index and the individual demo illustrations. Back to Physics Demonstrations' Home Page. Babbage Difference Engine in Gigapixel. Scale of Universe - Interactive Scale of the Universe Tool. We Choose the Moon: Pre-launch. Light & The Eye. • scotopic or dim light adapted rods (denoted by V' and containing the photopigment rhodopsin), most sensitive to "green" wavelengths at around 505 nm • short wavelength or S cones, containing cyanolabe and most sensitive to "blue violet" wavelengths at around 445 nm. • medium wavelength or M cones, containing chlorolabe and most sensitive to "green" wavelengths at around 540 nm • long wavelength or L cones, containing the photopigment erythrolabe and most sensitive to "greenish yellow" wavelengths at around 565 nm As the figure shows, there is a large number of differences between rhodopsin (taken as baseline) and the S photopigment, and a similarly large number of differences between the S and M photopigments.
In contrast, the M and L photopigments are nearly identical. Photopigments do not catch light particles the way a bucket catches rain. Measuring Photoreceptor Light Sensitivity. Four kinds of spectra were obtained with four distinct absorptance peaks at 420, 495, 530 and 560 nm. 1. Color Wheels are wrong? How color vision actually works. Color theory is a little obsession of mine. You’re here for startup advice, but this week I’m taking an indulgence. Leave a comment if you want to see more or fewer of these little distractions. Why are artists special? Ask any artist to explain how color works, and they’ll launch into a treatise about how the Three Primary Colors: red, blue, and yellow form a color “wheel:” Why “wheel?”
All other colors are created by mixing these three colors in certain proportions, they’ll explain. Continuing this process produces the infamous color wheel you probably learned in school; a pretty, symmetrical, satisfying device in which each hue melds seamlessly and linearly into the next: Unfortunately, none of this stands up to even minor scrutiny. For example, open up your desktop printer and you’ll see something quite different: Three colors of ink which, when combined, produce all others: cyan, magenta, and yellow. But wait! TVs and computers are different yet again. This isn’t adding up. Freaky. Geometry of the Universe. Can the Universe be finite in size? If so, what is ``outside'' the Universe? The answer to both these questions involves a discussion of the intrinsic geometry of the Universe. At this point it is important to remember the distinction between the curvature of space (negative, positive or flat) and the toplogy of the Universe (what is its shape = how is it connected).
It is possible to different curvatures in different shapes. There are basically three possible shapes to the Universe; a flat Universe (Euclidean or zero curvature), a spherical or closed Universe (positive curvature) or a hyperbolic or open Universe (negative curvature). All three geometries are classes of what is called Riemannian geometry, based on three possible states for parallel lines The conformal space-time diagram is a good tool use for describing the meaning of CMB anisotropy observations.