Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts

Sunday, June 4, 2017

The Demon Haunted World - Carl Sagan


                 
                       Ebook Size : 4.4 MB

                       Download : The Demon Haunted World - Carl Sagan

    "SCIENCE AS A CANDLE IN THE DARK"

It was a blustery fall day in 1939. In the streets outside the apartment building, fallen leaves were swirling in little whirl winds, each with a life of its own. It was good to be inside and warm and safe, with my mother preparing dinner in the next room. In our apartment there were no older kids who picked on you for no reason. Just the week before, I had been in a fight – I can't remember, after all these years, who it was with; maybe it was Snoony Agata from the third floor - and, after a wild swing, I found I had put my fist through the plate glass window of Schechter's drug store.

Mr Schechter was solicitous: 'It's all right, I'm insured,' he said as he put some unbelievably painful antiseptic on my wrist. My mother took me to the doctor whose office was on the ground floor of our building. With a pair of tweezers, he pulled out a fragment of glass. Using needle and thread, he sewed two stitches.

'Two stitches!' my father had repeated later that night. He knew about stitches, because he was a cutter in the garment industry; his job was to use a very scary power saw to cut out patterns - backs, say, or sleeves for ladies' coats and suits - from an enormous stack of cloth. Then the patterns were conveyed to endless rows of women sitting at sewing machines. He was pleased I had gotten angry enough to overcome a natural timidity. Sometimes it was good to fight back. I hadn't planned to do anything violent. It just happened. One moment Snoony was pushing me and the next moment my fist was through Mr Schechter's window. I had injured my wrist, generated an unexpected medical expense, broken a plate glass window, and no one was mad at me. As for Snoony, he was more friendly than ever.

I puzzled over what the lesson was. But it was much more pleasant to work it out up here in the warmth of the apartment, gazing out through the living-room window into Lower New York Bay, than to risk some new misadventure on the streets below. As she often did, my mother had changed her clothes and made up her face in anticipation of my father's arrival. We talked about my fight with Snoony. The Sun was almost setting and together we looked out across the choppy waters. 'There are people fighting out there, killing each other,' she said, waving vaguely across the Atlantic. I peered intently. 'I know,' I replied. 'I can see them.' 'No, you can't,' she replied, sceptically, almost severely, before returning to the kitchen. 'They're too far away.'

How could she know whether I could see them or not? I wondered. Squinting, I had thought I'd made out a thin strip of land at the horizon on which tiny figures were pushing and shoving and duelling with swords as they did in my comic books. But maybe she was right. Maybe it had just been my imagination, a little like the midnight monsters that still, on occasion, awakened me from a deep sleep, my pyjamas drenched in sweat, my heart pounding.

How can you tell when someone is only imagining? I gazed out across the grey waters until night fell and I was called to wash my hands for dinner. When he came home, my father swooped me up in his arms. I could feel the cold of the outside world against his one-day growth of beard. On a Sunday in that same year, my father had patiently explained to me about zero as a placeholder in arithmetic, about the wicked-sounding names of big numbers, and about how there's no biggest number ('You can always add one,' he pointed out). Suddenly, I was seized by a childish compulsion to write in sequence all the integers from 1 to 1,000. We had no pads of paper, but my father offered up the stack of grey cardboards he had been saving from when his shirts were sent to the laundry.

Tuesday, July 21, 2015

Science - A Discovery in Comics - Margreet de Heer

  
  Ebook Size : 43 MB

  Download: Science - A Discovery in Comics - Margreet de Heer


Explaining different scientific disciplines in clear, colorful chapters, this illustrated primer is a great way to introduce young readers to a complex topic. In her easily accessible style, Margreet de Heer visualizes science and makes it approachable for those with little knowledge of the subject. Touching a number of topics in various scientific disciplines--including math, chemistry, physics, biology, geology, and quantum theory--this work ponders questions such as Who exclaimed "Eureka" and why? Why did Galileo get into a fight with the Church? and What happens when you have your DNA tested? This humorous yet substantive graphic account strips the subject of unnecessary complexity, making it a perfect introduction to exploring scientific concepts.

Margreet de Heer lives and works in Amsterdam, The Netherlands, with her husband Yiri T. Kohl and two cats. A long time ago, she studied Theology at the University of Amsterdam, but through divine intervention she ended up being a comic artist. She worked at the famous comic store Lambiek from 2000 until 2005, and wrote a book about Dutch comics together with Kees Kousemaker. Since 2005, the same year she contributed to the 24 Hour Comic Day Anthology, she is a full-time comic artist producing a wide range of work, from children's comics in magazines to cartoons at business conferences. In 2007 she started making philosophical comic "reports" for newspaper Trouw. This resulted in a book edition in 2010 which was published in the US by NBM Publishing with the title 'Philosophy: a Discovery in Comics' in 2012. Margreet continued the series with a comic book about religion in 2011, followed by one about science in 2012. The latter is published in the US with the title 'Science: a Discovery in Comics', in September 2013.

Sunday, February 10, 2013

Ideas and Opinions by Albert Einstein


                   Ebook Size : 13.5 MB

                   Download : Ideas and Opinions by Albert Einstein.pdf

 A new edition of the most definitive collection of Albert Einstein's popular writings, gathered under the supervision of Einstein himself. The selections range from his earliest days as a theoretical physicist to his death in 1955; from such subjects as relativity, nuclear war or peace, and religion and science, to human rights, economics, and government.

IDEAS AND OPINIONS contains essays by eminent scientist Albert Einstein on subjects ranging from atomic energy, relativity, and religion to human rights, government, and economics. Previously published articles, speeches, and letters are gathered here to create a fascinating collection of meditations by one of the world's greatest minds. --This text refers to an out of print or unavailable edition of this title.

"Ideas and Opinions reveals Albert Einstein, perhaps the greatest scientist of all time, as a whole human being . . . a deeply moral and philosophical thinker, whose clarity in human affairs matched his clarity in science. . . .
Purity and inspiration shine through every page of this extraordinary book."
--Alan Lightman --This text refers to the Hardcover edition.


 

Sunday, February 3, 2013

Physics FOR DUMMIES - Steven Holzner


             Ebook Size :  7 MB

             Download : Physics FOR DUMMIES.pdf

Physics is the study of your world and the world and universe around
you. You may think of physics as a burden — an obligation placed on
you in school, mostly to be nasty — but it isn’t like that. Physics is a study
that you undertake naturally from the moment you open your eyes.
Nothing falls beyond the scope of physics; it’s an all-encompassing science.
You can study various aspects of the natural world, and, accordingly, you can
study different fields in physics: the physics of objects in motion, of forces, of
electricity, of magnetism, of what happens when you start going nearly as fast
as the speed of light, and so on. You enjoy the study of all these topics and
many more in this book.

Physics has been around as long as people have tried to make sense of their
world. The word “physics” is derived from the Greek word “physika,” which
means “natural things.”

You can observe plenty going on around you all the time in the middle of your
complex world. Leaves are waving, the sun is shining, the stars are twinkling,
light bulbs are glowing, cars are moving, computer printers are printing, people are walking and riding bikes, streams are flowing, and so on. Physics is an inquiry into the world and the way it works, from the most basic (like coming to terms with the inertia of a dead car that you’re trying to push) to the most exotic (like peering into the very tiniest of worlds inside the smallest of particles to try to make sense of the fundamental building blocks of matter).

At root, physics is all about getting conscious about your world.

Physics is all around you, in every commonplace action. But if you want to get
wild, physics is the science to do it. This book finishes off with a roundup of some wild physics: the possibility of wormholes in space, for example, and how the gravitational pull of black holes is too strong for even light to escape.

Enjoy!


Tuesday, July 10, 2012

100 Greatest Science Discoveries Of All Time - Hendall Haven


                          Ebook Size : 1.6 MB

                          Download : 100 Greatest Science Discoveries Of All Time.pdf

A book collecting the celebrated problems of elementary mathematics that would commemorate their origin and, above all, present their solutions briefly, clearly, and comprehensibly has long seemed a necessary and attractive task to the author.

The restriction to problems of elementary mathematics was considered advisable in view of those readers who have neither the time nor the opportunity to acquaint themselves in any detail with higher mathematics. Nevertheless, in spite of this limitation a colorful and compelling picture has emerged, one that gives an idea of the amazing variety of mathematical methods and one that will-I hope-enchant many who are interested in mathematics and who take pleasure in characteristic mathematical thought processes. In the present work
there are to be found many pearls of mathematical art, problems the solutions of which represent, in the achievements ofa Gauss, an Euler, Steiner, and others, incredible triumphs of the mathematical mind.

Because the difficult economic situation at the present time barred the publication of a larger work, a limit had to be set to the scope and number of the problems treated. Thus, I decided on a round number of one hundred problems. Moreover, since many of the problems and solutions require considerable space despite the greatest concision, this had to be compensated for by the inclusion of a number of mathematical miniatures. Possibly, however, it may be just these little problems, which are, in their way, true jewels of mathematical miniature work, that will find the readiest readers and win new admirers for the queen of the sciences.