X Rays: An Introduction to the Study of Röntgen Rays |
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absorbed absorption coefficients alternating current aluminium amount anode anticathode apparatus atomic weight Barkla beam Bragg break cathode rays characteristic radiation characteristic rays charged condenser copper corpuscles corpuscular rays crystal curve dark-space density diffraction direction discharge tube ebonite effect electric field electrodes electrons Electroscope elements emitted energy excited experiments exposures fluorescence gases h₁ h₂ hard rays hardening homogeneous hydrogen incident increases induction coil insulator intensity inverse current ionisation ionisation chamber J. J. Thomson Laue spots magnetic measured mercury metal method molecules negative obtained ordinary particles penetrating photographic plate plane platinum positive rays potential pressure primary rays produced proportional pulse pump radiographs radium reflected Rhodium Röntgen scattered screen shows soft spark spark-gap spectrum speed sputtering surface TABLE temperature theory thickness tion tungsten ultra-violet light vapour various velocity voltage volts wave-length waves Wehnelt X rays X-ray bulb X-ray tube zinc-blende
Popular passages
Page 233 - Al Sb A As Ba Be Bi B Br Cd Cs Ca C Ce Cl Cr Co Cu Dy Er Eu F Gd Ga Ge Au Hf He Ho H In I Ir Fe Kr La Pb Li Lu Mg Mn Hg Mo...
Page 231 - Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo...
Page 18 - Rutherford has given a theory of the structure of atoms. According to this theory, the atoms consist of a positively charged nucleus surrounded by a system of electrons kept together by attractive forces from the nucleus: the total negative charge of the electrons is equal to the positive charge of the nucleus. Further, the nucleus is assumed to be the seat of the essential part of the mass of the atom, and to have linear dimensions exceedingly small compared with the linear dimensions of the whole...
Page 211 - An electromagnetic wave in space has both an electric and a magnetic field intensity which are at right angles to each other and to the direction of propagation of the wave. The two field intensities are related to each other by &
Page 231 - HYDROGEN HELIUM . LITHIUM . BERYLLIUM BORON CARBON . NITROGEN OXYGEN . FLUORINE NEON SODIUM . MAGNESIUM ALUMINIUM SILICON . PHOSPHORUS SULPHUR CHLORINE ARGON POTASSIUM CALCIUM SCANDIUM TITANIUM VANADIUM CHROMIUM MANGANESE IRON COBALT...
Page xvi - The corpuscle radiated until he had conceived A plan by which his freedom might be easily achieved, I'll not go into details for I might not be believed, Indeed I'm sure I should not be believed. However, there was one decisive action, The atom and the corpuscle each made a single charge, But the atom could not hold him in subjection Though something like a thousand times as large. The corpuscle won the day And in freedom went away And became a cathode ray. But his life was rather gay, And he went...
Page xv - A corpuscle once did oscillate so quickly to and fro, He always raised disturbances wherever he did go. He struggled hard for freedom against a powerful foe — An atom — who would not let him go. The aether trembled at his agitations In a manner so familiar that I only need to say, In accordance with Clerk Maxwell's six equations It tickled people's optics far away. You can feel the way it's done, You may trace them as they run — dy by dy less dP by dz is equal K.dX/dt While the curl of (X,Y,Z,)...
Page 232 - Cs Ba La Ce Pr Nd — Sa Eu Gd Tb Dy Ho Er Tm Yb Lu Ct Ta W — Os Ir Pt Au Hg Tl Pb At.
Page 60 - This type of apparatus is merely an oil-immersed step-up transformer which is supplied with alternating current from an alternator. A rotating pole-changing switch rectifies the high potential current from the secondary of the transformer.