Libros de Física, página 62 de 323

A brilliant introductory guide to exploring the night sky from the astronomers of the Royal Observatory Greenwich Offering complete advice from the ground up Stargazing is the perfect manual for beginners to astronomy introducing the world of telescopes planets stars dark skies and celestial maps Discover how to tackle light pollution how to stargaze with just your eyes and what equipment is best for beginners Astronomy experts Radmila Topalovic and Tom Kerss explain the best ways to plan your stargazing experience and the key things to look out for on specific dates throughout the year With seasonal star charts constellation charts and facts about our Solar System Stargazing is packed of useful information and guidance for both the Northern and Southern Hemispheres Bridging the gap between human curiosity and the need for scientific expertise Stargazing allows a complete novice to understand our place in the cosmos and enjoy the beautiful and extraordinary wonders of the night sky The perfect companion to the best selling Guide to the Night Sky from Collins Stargazing is a great way to get started in the fascinating world of astronomy Download your free resource booklet to follow the star chart explanations on the Stargazing audiobook visit collins co u

At first I didn t find fog fog found me Liminal transformative and increasingly elusive far from a simple cloud of water droplets fog is a state of mind As mist drifted through a copse of trees turning a familiar place strange and otherworldly Laura Pashby snapped a photograph and an obsession began Pashby hunts for fog walks and swims in it explores its often pivotal role in literature mythology and history as well as its environmental significance There has been a 50 per cent drop in fog events in the past fifty years fog is drifting away without us noticing and the ecological impact could be calamitous As she journeys to the foggiest places she can find Pashby immerses herself in Dartmoor s dangerous fog searches for the Scottish haar experiences Venice s magical mist tell us the myths behind the River Severn s fog and the shipwrecks it hides It s easy to get lost in fog but sometimes it s where imperceptible things can be found including in ourselves Chasing Fog is a captivating meditation on fog and mist a love song to weather and nature s power to transform

A brand new edition of this bestselling Gem featuring individual charts for all 88 constellations a star atlas of the entire sky and details of the brightest stars and objects of interest which can be seen with the naked eye binoculars and small telescopes Collins Gem Stars provides details of all 88 constellations of the Northern and Southern hemispheres complete with star charts and a star atlas of the entire sky ideal for practical observation of the stars throughout the world all year round

Is humankind bound for distant stars or are we inextricably bound to our own star Can we overcome the main challenge that even the nearest stars are unimaginably far away This is a critical exploration of the proposed technologies and practicalities of undertaking an interstellar journey

The perfect gift for anyone eager to learn more about the Red PlanetDiscover all you need to know about Mars including the historic cultural and scientific background and exploratory missions with this accessible guide for aspiring and seasoned astronomers packed full of stunning images Learn about humanity s fascination with Mars from antiquity to the modern day Read about the evolution of the planet its moons and all the facts and figures Discover how to study Mars with the essential equipment for observation and photography Comes with an Atlas to help you find your way around the planet when looking at images Includes resources for further study and a glossary of key termsMars gives you a complete understanding of one of the true wonders of our Solar System and leaves you prepared for the adventure of a lifetime including what the future holds and the potential for manned missions

Planisphere and Starfinder is your personal guide to exploring the night sky It takes the mystery out of astronomy and introduces basic stargazing techniques helping you to find and recognise objects easily Starting close to home in the Solar System it shows you how to observe the Moon planets comets and asteroids as well as how to make the most of events like eclipses and meteor showers Then you ll head for the stars with a guide to the constellations Each entry is illustrated with a clear star chart shows you where you can see the constellation in the world and even explains its star pattern s symbolic meaning The final section takes you on a month by month guide through the night sky so you never miss a thing The book also comes with a planisphere that you can remove and take anywhere showing the entire sky above your head at any time of night and any time of year

The ideal gift for all amateur and seasoned astronomers This is the ideal resource for beginners and experienced stargazers in the United States and Canada and has been updated to include new and practical information covering events occurring in North America s night sky throughout 2025 This practical guide is both an easy introduction to astronomy and a useful reference for seasoned stargazers Now includes a section on comets and a map of the moon Designed specifically for North America Written and illustrated by astronomical experts Content includes Advice on where to start looking Easy to use star maps for each month with descriptions of what to see Positions of the moon and visible planets Details of objects and events in 2025 Now in three editions Britain and Ireland North America Southern Hemisphere

Aquest text docent -que correspon a la primera part del curs Tecnologia Electromagnetica- tracta els aspectes fonamentals de la propagació electromagnetica en medis lliures i la propagació guiada (línies de transmissio i guies d& x02019;ona), aixi com la teoria basica de radiacio electromagnetica i uns exemples d& x02019;aplicacions, dins l& x02019;electromagnetisme classic. S& x02019;hi utilitza el Sistema Internacional d& x02019;Unitats i es presenten exemples i problemes en cada capitol. La primera part explica la propagacio en medis oberts, incloent-hi les equacions de Maxwell, les condicions de contorn i els casos ideals de materials dielectrics i conductors; s& x02019;hi analitzen les propietats de conservacio, el vector de Poynting i la propagacio a traves d& x02019;interficies. En la segona part, centrada en la propagacio guiada, s& x02019;hi estudien linies de transmissio, guies conductores i cavitats ressonants. El llibre esta adreçat als estudiants amb formacio en electricitat i magnetisme, que consolidaran conceptes de propagacio electromagnetica i unificaran la notacio.

This book is a comprehensive balanced and up-to-date introduction to nuclear physics that describes the experiments made to study nuclear reactions and nuclear structure, and the theories and models that have been developed to understand the properties of nuclei and their interactions. After a historical introduction, there are chapters on nuclear accelerators and detectors, elementary particles, nuclear forces, nuclear reaction theory, nuclear models, nuclear and heavy ion reactions, nuclear astrophysics and nuclear reactors. While primarily aimed at undergraduates it will also serve as a reference for graduate students and professional nuclear physicists.

Professor Brian Cox is back with another insightful and mind blowing exploration of space This time he shows us our universe as we ve never seen it before 13 7 billion years old 93 billion light years wide It contains over 100 billion galaxies each containing hundreds of billions of stars This infinite vast and complex Universe has been the subject of human fascination and scientific exploration for thousands of years The wonders of the Universe might seem alien to us and impossible to understand but away from the telescopes the labs and the white coats Professor Brian Cox uses the evidence found in the natural world around us to explain its simple truths The same laws of light gravity time matter and energy that govern us here on Earth are the same as those applied in the Universe Using 3D CGI imagery his expert knowledge and his infectious enthusiasm Professor Cox shows us that if we can understand the impact of these governing laws on Earth it will bring us a step closer to an understanding of our Universe