The Active Mirror Control of the MAGIC Telescope

One of the main design goals of the MAGIC telescopes is the very fast repositioning in case of Gamma Ray Burst (GRB) alarms, implying a low weight of the telescope dish. This is accomplished by using a space frame made of carbon fiber epoxy tubes, resulting in a strong but not very rigid support structure. Therefore it is necessary to readjust the individual mirror tiles to correct for deformations of the dish under varying gravitational load while tracking an object. We present the concept of the Active Mirror Control (AMC) as implemented in the MAGIC telescopes and the actual performance reached. Additionally we show that also telescopes using a stiff structure can benefit from using an AMC.Comment: Contribution to the 30th ICRC, Merida, Mexico, July 2007 on behalf of the MAGIC Collaboratio

The Symbol of Mirror and its Main Poetic Functions in Fairy Tales

The article considers the issue of using the symbol of the mirror and its main functions in fairy tales. According to the article, magic mirror is one of the traditional details which are encountered in the genre of fairy tails and legends of world folklore and it is used as the main element to develop story events. The article identifies relation mirror with water and common features of these symbols. Also, analyses of novels where the magic mirror is used are given.Keywords: mirror, image, fairy tale, folklore, artistic tales, symbol

Critical Reflection is More than Just Looking in a Mirror

Magic mirror on the wall--who is the fairest of them all? spoken by the Evil Queen in Snow White and the Seven Dwarfs (1937). Looking in a mirror (and most of us don’t have a magic mirror!) provides us only with a surface reflection of how we look – not who we are or what we’ve learned. In this blog post, we’ll look at what critical reflection is and its importance in a learning experienc

N=8 non-BPS Attractors, Fixed Scalars and Magic Supergravities

We analyze the Hessian matrix of the black hole potential of N=8, d=4 supergravity, and determine its rank at non-BPS critical points, relating the resulting spectrum to non-BPS solutions (with non-vanishing central charge) of N=2, d=4 magic supergravities and their ``mirror'' duals. We find agreement with the known degeneracy splitting of N=2 non-BPS spectrum of generic special Kahler geometries with cubic holomorphic prepotential. We also relate non-BPS critical points with vanishing central charge in N=2 magic supergravities to a particular reduction of the N=8, 1/8-BPS critical points.Comment: 1+25 pages, 4 Tables, no figures; v2: minor changes and corrections, Ref. adde

The Magic Mirror - The Fashionista's world-view (and the rest of humanity's)

In this lecture, LCF Visiting Professor Peter York, author, journalist and broadcaster, looks at the contrasting attitudes to fashion amongst: 'fashionistas' (i.e. fashion professionals - but particularly high-end fashion journalists), and the rest of humankind. He argues that 'fashionistas' are - most of them - "quite astonishingly different" from the rest of humankind. This is a function of: * their 'expert' role * their place in the fashion market process * their milieu * their 'wardrobe opportunities' * their aesthetic education. 'Fashionistas', quite literally, see the world differently and talk about clothes differently. This means their reporting of fashion brings different criteria to bear, most of which are unacknowledged. Key differences are: * (at least while they're working) fashionistas develop the tastes of extremely rich women, and are enabled to satisfy them * fashionista language develops its own codes, distorting the meanings of familiar words (e.g. 'sexy') and introducing others (e.g. 'directional'), which only work in fashionland. * a total inability to acknowledge the role of age, class, the workplace or any other real world factors in real women's fashion options. The rest of humanity (broadly women readers of fashion coverage) have lives. These lives, situations and finances shape their views of fashion and their choices. Their concerns and language are wonderfully different from those of most 'fashionistas'. The misunderstandings between these contrasting world-views are richly comic and deeply sad

Smart Mirror for Home Automation

Smart Mirror for Home Automation This research describes the design, construction and working of the smart mirror. Every morning our day begins by watching ourselves at least once in mirror before leaving our homes. We interact with it psychologically to find out how we look and how our attire is. Smart Mirror or Magic Mirror is one of the applications of Raspberry Pi. A computer screen embedded in mirror looks very futuristic. The Raspberry Pi stays at back scenes and controls the data displayed on mirror. While looking at mirror, the user can look at various notifications from social sites as well news, weather forecast and more things. Such mirrors can be programmed to work as control home appliances by voice input. The Raspberry Pi is connected to monitor via HDMI as well as it also has built-in Wi-Fi and Bluetooth interfaces so we can just swipe music and videos to mirror

Medium-mass nuclei from chiral nucleon-nucleon interactions

We compute the binding energies, radii, and densities for selected medium-mass nuclei within coupled-cluster theory and employ the "bare" chiral nucleon-nucleon interaction at order N3LO. We find rather well-converged results in model spaces consisting of 15 oscillator shells, and the doubly magic nuclei 40Ca, 48Ca, and the exotic 48Ni are underbound by about 1 MeV per nucleon within the CCSD approximation. The binding-energy difference between the mirror nuclei 48Ca and 48Ni is close to theoretical mass table evaluations. Our computation of the one-body density matrices and the corresponding natural orbitals and occupation numbers provides a first step to a microscopic foundation of the nuclear shell model.Comment: 5 pages, 5 figure