Une pure merveille !
Un roman d'une grande beauté, drôle, fin, extrêmement lumineux sur des sujets difficiles : la perte de
l'être aimé, la dureté de la vie et la tristesse qu'on barricade parfois... Elise franco-japonaise,
orpheline de sa maman veut poser LA question à son père et elle en trouvera le courage au fil des pages,
grâce au retour de sa grand-mère du japon, de sa rencontre avec son extravagante amie Stella..
Ensemble il ne diront plus Sayonara mais Mata Ne !
Our understanding of biological functions is rapidly approaching the molecular level. On this scale the only significant forces are electromagnetic, so...
Lire la suite
Livré chez vous entre le 2 octobre et le 8 octobre
En librairie
Résumé
Our understanding of biological functions is rapidly approaching the molecular level. On this scale the only significant forces are electromagnetic, so that ultimately all living processes must be understood in terms of electromagnetic fields and forces. The first half of the present book deals with the theory of electromagnetism using a descriptive and geometrical approach suited to students of biology, chemistry, and biochemistry, and including biologically relevant examples where possible. The second half contains biological topics which can serve as applications of the theory for students of chemistry or biology, or as an introduction to biology for students trained in the physical sciences who wish to migrate to biology. Topics include the properties of water and ions in bulk solution and in narrow pores, the Debye layer, possible mechanisms for a magnetic animal compass, an electrostatic model of a proton/ion counterport, and the semi-classical theory of nuclear magnetic resonance.
Sommaire
THE BASIC THEORY
Electrostatic fields and voltage
How conductors shape an electric field
Ionic conductors
Properties of the electric dipole and the application of Gauss's law when dielectrics are present
The calculation of electric fields and voltages in the presence of dielectrics
Static magnetic fields
The generation of magnetic fields
Magnetic polarization of material
Induced electric and magnetic fields
The motion of a charged particle in electric and magnetic fields and relativity
APPLICATIONS
Ions in aqueous solution and the ionization of acids and bases
The Debye layer
The behaviour of ions in narrow pores
Possible mechanisms for a magnetic animal compass
An electrostatic model of a proton/ion or an ion/ion coport or counterport
An introduction to the semi-classical theory of pulsed nuclear magnetic resonance