New PDF release: A century of Nature: twenty-one discoveries that changed

By Laura Garwin, Tim Lincoln, Steven Weinberg

ISBN-10: 0226284158

ISBN-13: 9780226284156

Some of the clinical breakthroughs of the 20 th century have been first suggested within the magazine Nature. A Century of Nature brings jointly in a single quantity Nature's maximum hits—reproductions of seminal contributions that modified technology and the realm, observed via essays written by way of top scientists (including 4 Nobel laureates) that supply ancient context for every article, clarify its insights in sleek, obtainable prose, and rejoice the serendipity of discovery and the rewards of attempting to find needles in haystacks.

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Extra resources for A century of Nature: twenty-one discoveries that changed science and the world

Sample text

But in 1920, when Rutherford gave his Bakerian lecture,2 all he knew was that they had a mass four times that of the proton (an atomic mass of 4) and a positive charge twice that of the proton (a charge of ϩ2). He therefore assumed that they comprised four protons and two electrons (see figure). 2) might comprise three protons and one electron, and a heavy hydrogen, or 2H, nucleus (mass 2 and charge ϩ1) might have two protons and one electron. Today the 3He nucleus is known to comprise two protons and a neutron, and the 2H (deuterium) nucleus, also known as the deuteron (and for a while called the “diplon” by Rutherford), consists of a single proton and a neutron.

6. Contour tracings of coronal sections their objective environment as its through the widest part of the parietal region of the endocranial casts in Australopithecus details were simultaneously re...... and in a gorilla -------. vealed to the senses of vision and 18 raymond a. dart touch, and also of hearing. They possessed to a degree unappreciated by living anthropoids the use of their hands and ears and the consequent faculty of associating with the colour, form, and general appearance of objects, their weight, texture, resilience, and flexibility, as well as the significance of sounds emitted by them.

Owing to these remarkably human characters displayed by the deciduous dentition, when contour tracings of the upper jaw are made, it is found that the jaw and the teeth, as a whole, take up a parabolic arrangement comparable only with that presented by mankind amongst the higher primates. These facts, together with the more minute anatomy of the teeth, will be illustrated and discussed in the memoir which is in the process of elaboration concerning the fossil remains. In the third place, the mandible itself is humanoid rather than anthropoid.

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A century of Nature: twenty-one discoveries that changed science and the world by Laura Garwin, Tim Lincoln, Steven Weinberg

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