By Clas Blomberg

ISBN-10: 0444527982

ISBN-13: 9780444527981

The aim of the ebook is to provide a survey of the physics that's proper for organic purposes, and likewise to debate what sort of biology wishes physics. The e-book supplies a huge account of uncomplicated physics, appropriate for the purposes and numerous functions from houses of proteins to tactics within the mobilephone to wider topics similar to the mind, the starting place of existence and evolution. It additionally considers common questions of universal curiosity akin to reductionism, determinism and randomness, the place the physics view usually is misunderstood. the delicate stability among order and illness is a repeated subject showing in lots of contexts. There are descriptive components which will likely be adequate for the comprehension of normal rules, and extra certain, formalistic components if you happen to are looking to cross deeper, and spot the tips expressed when it comes to mathematical formulation. - Describes how physics is required for knowing uncomplicated ideas of biology - Discusses the fragile stability among order and affliction in dwelling structures - Explores how physics play a job excessive organic features, similar to studying and pondering

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The aim of the publication is to provide a survey of the physics that's correct for organic purposes, and in addition to debate what sort of biology wishes physics. The e-book provides a huge account of uncomplicated physics, appropriate for the functions and numerous functions from houses of proteins to tactics within the phone to wider issues resembling the mind, the foundation of lifestyles and evolution.

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Extra resources for Physics of Life: The Physicist's Road to Biology

Sample text

They are important for selection of long hydrocarbon chains, and they are important for all kinds of molecular biological recognition. Let us go further to more complex situations. An electric conductor is usually a metal where electrons are free and move very easily. An electrostatic field does not penetrate into a conductor, but induces surface charges. Field lines end there and are always perpendicular to such a surface. “Living matter” does not comprise metals, and pure conductors do not normally appear in living organisms.

A main idea is that any object that moves with a constant velocity continues that motion unless it is influenced by a force. This is expressed in a more general concept, the momentum of motion, which is equal to velocity multiplied with mass. In this description, a mass provides a resistance to motion—the heavier an object is, the more difficult it is to move it and to achieve large velocities. The mass is also what is relevant for gravitation forces. It is easy at this point to run into circular definitions, so let us simply define mass as the basic contents of matter—primarily the sum of the masses of the atomic nuclei.

This can influence such small iron grains and provide a clear effect. There are, still very unclear, claims about the influence of even rather weak magnetic fields on living organisms. As the question is raised, it is of interest to think about possible effects of magnetic fields, although our description may rather show that effects appear too small to be of relevance. The magnetic force field is usually called B, which is a vector directed along field lines. The generation of a magnetic force field around a magnetic dipole is given by the same type of formulas as the electric force field around an electric dipole.

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