Relativity: The Special and the General Theory is a groundbreaking scientific work written by Albert Einstein, one of the most renowned physicists of all time. Published in 1915, the book revolutionized our understanding of space, time, and gravity. Relativity remains a cornerstone of modern physics and a testament to Einstein's intellectual brilliance. Journey through the fabric of space, time, and thought. Provides a comprehensive exploration of both the special theory of relativity and the general theory of relativity. Concepts are explained in a logical and concise manner, enhancing the reader's comprehension. Offers readers a fresh perspective on the fundamental principles that govern our reality. Delve into the mind of Einstein and understand the ideas that reshaped our understanding of the universe. Allows readers to engage with the timeless concepts that underpin our current scientific understanding.

Gold, gold, gold for Australia's mega-selling scientist's 27th book... 'Nullius in verba', the Royal Society's motto, roughly translated, means 'take nobody's word for it'. Why not do the experiment for yourself and see the reality of nature. Don't trust authority - trust nature.Does cranberry juice cure urinary tract infections? Is the hookah really a safer way to smoke? Will the Large Hadron Collider destroy the Earth and the Universe? Is the purpose of the peacock's tail to attract females? And in the unlikely event of a plane crash, are some seats safer than others?the human hand has 27 bones; Uranus has 27 moons; 27 is a perfect cube, being 3 x 3 x 3; and in this, Dr Karl's 27th book, he takes us on another exploration of the dazzling world of science.

In the next book in Dr Karl's mega-selling science series, Australia's favourite scientist answers more curly questions about life, the universe and everything; questions such as Are virgin births possible? (they are) Will a black hole suck you in? (it won't) Is the most radioactive device in our homes the microwave? (it's not, it's the smoke detector)No-one conveys the excitement and wonder of science quite like Dr Karl and this, his twenty-fifth book, takes us on another thoroughly entertaining exploration of the world around us. If you like your science fun and unpredictable, don't miss this new addition to the Dr Karl library.

In this, his 45th book, Dr Karl goes full kolour, with brilliant and funny illustrations to match his dress sense. So take a technikolour trip through science with the intrepid Dr Karl, Australia's favourite science guru. Q: HOW MANY DR KARL BOOKS ARE THERE IN THE UNIVERSE? A: MORE THAN A MILLION! Dr Karl is on a mission to track down Awe and Wonder in the Universe. Why do wombats poo cubes? What nearly destroyed humanity on Halloween 2015? How do you use an incinerating toilet? Find out why we've sent a spacecraft with Dr Karl's name on it to kiss the Sun, whether cannibalism is nutritious, and the answer to the Biggeset Question of All - why does spaghetti always break into three pieces? Plus a whole lot more. So strap in and get ready for a random ride through the Universe. Who knows where you'll end up!

J. Robert Oppenheimer, a leading physicist in the Manhattan Project, recognized that scientific inquiry and discovery could no longer be separated from their effect on political decision-making, social responsibility, and human endeavor in general. He openly addressed issues of common concern and as a scientist accepted the responsibility brought about by nuclear physics. This collection of essays and speeches, only a few of which have been previously published, presents an extraordinary thinker and scientist as well as a compassionate human being. No issue is too small or too large if it is in some way connected to the emergence of a weapon as terrible and powerful as the atom bomb. Oppenheimer discusses the shift in scientific awareness and its impact on education, the question of openness in a society forced to keep secrets, the conflict between individual concerns and public and political necessity, the future of science and its effects on future politics---in short, the common and uncommon sense we find in our modern day reality. Uncommon Sense presents a responsible scientist and a concerned man who foresaw the problems the discovery of fission would create. And we should no neglect to read between the lines: The peak of Oppenheimer’s career coincided with the McCarthy era, the repercussions of which strongly affected his personal and professional life. The themes of openness and freedom becomes, therefore, recurring concerns in this collection of essays and speeches.

"A pathbreaking book on an important subject which, surprisingly, has been paid little attention by social scientists. Zerubavel writes with both learning and lucidity. His book is a pleasure to read." -Peter Berger "Others have written about the structuring of time, but few so insightfully and compellingly as Zerubavel." -Neil J. Smelser "This is a jewel of a book, one of the most important contributions to cultural sociology in recent years. Professor Zerubavel's easy blend of history, religion, science, politics, and social values makes this a study a delightful voyage of unexpected discovery and new awareness. It hink the title has misled some people into thinking this is a book on music or something of the sort. All the more reason to rejoice at this reissue in paperback." -David S. Landes "Hidden Rhythms is an exciting study of a subject that has net yet gained the attention it deserves among sociologists and other social scientists . . . Zerubavel's book has the distinctive merit to discuss earlier approaches to the study of schedules and calendars and to add a series of extremely shrewd observations and calendars to add a series of extremely shrewd observations of his own on the sociology of time. His work seems indispensable for all those social scientists who have become conscious of the central position of the temporal dimension in the life of people and their society." -Lewis A. Coser "Eviatar Zerubavel's Hidden Rhythms is an original and highly imaginative analysis of the role time schedule plays in social life. Continuing the distinctive focus on social time Zerubavel develops in Patterns of Time in Hospital life, he provides in Hidden Rhythms more penetrating and profound analysis of the subtle and diverse significance of time in organizing our social relationships and lives. A joy to read." -Peter M. Blau

A book of questions and answers about everyday phenomena in biology, chemistry, physics, mathematics, and astronomy.

A. Gro8en- und Einheitensysteme Westphal, Physik, 25./26. Auf!., §§ 2, 3; ferner: Die Grundlagen des physikalismen Begriffssystems. 1. GroBen, Zahlenwerte und Einheiten Das Ergebnis jeder physikalisehen Messung ist die Angabe einer physika- /ischen Grof3e Gals Produkt aus einem Zahlenwert {G} und einer Ein- heit [G], also G = {G} [G]. Einheiten sind vereinbarte Vertreter der be- treffenden GroBenart, deren es oft mehrere gibt. Eine physikalisehe GroBe ist aber eine von der Einheitenwahl unabhangige (invariante) Gegebenheit. Geht man von einer Einheit [G] zu einer anderen Einheit [G]' iiber, so andert sich zwar der Zahlenwert von {G} in {G}', aber nieht die GroBe. Es ist G = {G} [G] = {G}' [G]'. Eine Lange bleibt die gleiehe GroBe, ganz gleieh, ob man sie als 1 = 1,500 m oder als 1 = 1500 mm besehreibt. Dem- naeh ist {G}'/{G} = [G]/[G]'. Je groBer die Einheit, um so kleiner der Zahlenwert. Unter einer Grof3enart (GroBenklasse) versteht man eine unendliche Mannig- faltigkeit gleichartiger GroBen, z. B. alIer Langen, Zeiten, Temperaturen usw. Mit Hilfe einiger weniger Basisgrof3en (Grundgrof3en) konnen aIle weiteren physikalischen GroBen ihrer Art nach als Potenzprodukte von Basisgrof3en definiert werden (abgeleitete Grof3en). Die Anzahl der fiir ein Teilsystem der Physik unerllilSlich notigen BasisgroBen lliBt sich ermitteln; ihre Auswahl steht innerhalb gewisser Grenzen frei. BasisgroBen konnen nieht definiert, sondern nur durch eine Aussage als solche eingefilhrt werden.