购物车
个人中心
Great Astronomers
￥24.44
Great Astronomers
Everything About Mars
￥24.44
Everything About Mars
The Story of the Heavens
￥24.44
The Story of the Heavens
Brain Imaging Techniques: A Tutorial Study Guide
￥32.62
Brain Imaging Techniques: A Tutorial Study Guide
Inventions of the Great War
￥27.88
The great World War was more than two-thirds over when America entered the struggle, and yet in a sense this country was in the war from its very beginning. Three great inventions controlled the character of the fighting and made it different from any other the world has ever seen. These three inventions were American. The submarine was our invention; it carried the war into the sea. The airplane was an American invention; it carried the war into the sky. We invented the machine-gun; it drove the war into the ground. It is not my purpose to boast of American genius but, rather, to show that we entered the war with heavy responsibilities. The inven-tions we had given to the world had been developed marvelously in other lands. Furthermore they were in the hands of a determined and unscrupulous foe, and we found before us the task of overcoming the very machines that we had created. Yankee ingenuity was faced with a real test. The only way of overcoming the airplane was to build more and better machines than the enemy possessed. This we tried to do, but first we had to be taught by our allies the latest refinements of this machine, and the war was over before we had more than started our a?rial program. The machine-gun and its accessory, barbed wire (also an American invention), were overcome by the tank; and we may find what little comfort we can in the fact that its invention was inspired by the sight of an American farm tractor. But the tank was a British creation and was undoubtedly the most important invention of the war. On the sea we were faced with a most baffling problem. The U-boat could not be coped with by the building of swarms of submarines. The essential here was a means of locating the enemy and destroying him even while he lurked under the surface. Two American inventions, the hydrophone and the depth bomb, made the lot of the U-boat decidedly unenviable and they hastened if they did not actually end German frightfulness on the sea. But these were by no means the only inventions of the war. Great Britain showed wonderful ingenuity and resourcefulness in many di-rections; France did marvels with the airplane and showed great clev-erness in her development of the tank and there was a host of minor inventions to her credit; while Italy showed marked skill in the crea-tion of large airplanes and small seacraft.
The Inventions, Researches and Writings of Nikola Tesla: Complete & Illustrated
￥28.61
The electrical problems of the present day lie largely in the economical transmission of power and in the radical improvement of the means and methods of illumination. To many workers and thinkers in the domain of electrical invention, the apparatus and devices that are familiar, appear cumbrous and wasteful, and subject to severe limitations. They believe that the principles of current generation must be changed, the area of current supply be enlarged, and the appliances used by the consumer be at once cheapened and simplified. The brilliant successes of the past justify them in every expectancy of still more generous fruition.??The present volume is a simple record of the pioneer work done in such departments up to date, by Mr. Nikola Tesla, in whom the world has already recognized one of the foremost of modern electrical in-vestigators and inventors. No attempt whatever has been made here to emphasize the importance of his researches and discoveries. ??Great ideas and real inventions win their own way, determining their own place by intrinsic merit. But with the conviction that Mr. Tesla is blazing a path that electrical development must follow for many years to come, the compiler has endeavored to bring together all that bears the impress of Mr. Tesla's genius, and is worthy of preservation. Aside from its value as showing the scope of his inventions, this volume may be of service as indicating the range of his thought. There is intellectual profit in studying the push and play of a vigorous and original mind.?
The Heracleidae
￥40.79
Iolaus, Heracles’ nephew and his companion during his Twelve Labours but now an old man, is in hiding with Heracles’ fatherless children at the altar of the temple of Zeus at Marathon, near Athens. They have been moving from city to city, as Iolaus tries to protect them from the vengeful King Eurystheus of Argos, who has vowed to kill them. A herald from Eurystheus appears calling on them once more to return to Argos to face the consequences, and Iolaus begs the Chorus of aged Athenians to take pity and help them.
The Star-Child
￥40.79
The Star-Child is the story of an abandoned infant boy found in the woods by a poor woodcutter, who pities him and takes him in. He grows up to be exceedingly beautiful, but vain, cruel, and arrogant, believing himself to be the divine child of the stars. He lords himself over the other children, who follow him devotedly, and takes pleasure in torturing the forest animals and town beggars alike.
Mathematical Thaumaturgy: Doing The Math that Make You Laugh
￥32.62
Mathematical Thaumaturgy: Doing The Math that Make You Laugh
Rikki-Tikki-Tavi and Other Tales
￥40.79
A a young mongoose named Rikki-Tikki-Tavi is adopted into a British family residing in India. After becoming friendly with some of the other creatures inhabiting the garden, Rikki is warned of two cobras Nag and Nagaina, who are angered by the family's presence on their territory.
A Midsummer Night's Dream
￥40.79
One of Shakespeare's most popular works, A Midsummer Night's Dream is a comedy play following events surrounding marriage of the Duke of Athens, Theseus, and Hippolyta. The play is set in a forest where several young Athenian lovers and a group of six amateur actors are being controlled and manipulated by the fairies inhabiting the forest.
The Physics and Technology of Diagnostic Ultrasound: A Practitioner's Guide
￥232.01
The Physics and Technology of Diagnostic Ultrasound: A Practitioner's Guide
Universe: The Solar System and Beyond
￥24.44
Universe: The Solar System and Beyond
Atopic Dermatitis: New Perspectives on Managing a Chronic Inflammatory Disease
￥0.01
Atopic Dermatitis: New Perspectives on Managing a Chronic Inflammatory Disease
Biological Principles: A Tutorial Study Guide
￥32.62
Biological Principles: A Tutorial Study Guide
Nervous System: A Tutorial Study Guide
￥48.97
Nervous System: A Tutorial Study Guide
Circulatory System: A Tutorial Study Guide
￥32.62
Circulatory System: A Tutorial Study Guide
Immune System: A Tutorial Study Guide
￥32.62
Immune System: A Tutorial Study Guide
Motor System: A Tutorial Study Guide
￥32.62
Motor System: A Tutorial Study Guide
Dose-Response Curve: A Tutorial Study Guide
￥32.62
Dose-Response Curve: A Tutorial Study Guide
Killing Us Softly：The Sense and Nonsense of Alternative Medicine
￥80.25
More people than ever are using alternative medicine. But, as expert Dr Paul Offit explains, these untested therapies are ineffective, expensive and even deadly. Now that homeopathic remedies are offered on the Nhs, it's clear that various therapies once considered alternative or complementary, have become mainstream - prescribed to burn fat, shrink prostates, alleviate colds, reduce stress, eliminate pain and prevent cancer. At the same time, uptake of effective vaccines such as Mmr has fallen - a disturbing trend which, in the case of the Mmr, has lead to a sharp rise in the number of measles cases. In 'Killing Us Softly' Paul Offit reveals, alternative medicine - an unregulated industry under no obligation to prove its claims or admit its risks - can actually be very harmful. In 'Killing Us Softly' he exposes how: * Homeopathic asthma preparations and bogus cancer cures have replaced life-saving medicines. * Acupuncture needles have pierced hearts, lungs, and livers and transmitted viruses, including hepatitis B, hepatitis C and Hiv. * Chiropractic manipulations have torn arteries. * Megavitamins increase the risk of cancer and heart disease-a fact well known to scientists but virtually unknown to the public. Using real-life case histories to back his argument, Dr Offit shows us why any medical treatment - alternative or conventional - must be properly evaluated. 'There's no such thing as alternative medicine. There's only medicine that works and medicine that doesn't.'
