1898 ⟶ Wien Demonstrates Deflection of Canal Rays by Magnetic Fields
Wilhelm Wien demonstrates that canal rays (streams of positi...
Year
1885
1895
1898
1913
💡 Eugen Goldstein Names Cathode and Canal Rays
Eugen Goldstein names the cathode ray, later discovered to be composed of electrons, and the canal ray, later discovered to be positive hydrogen ions that had been stripped of their electrons in a cathode ray tube. These would later be named protons.⟶
PhysicsAtomic PhysicsCathode RaysCanal RaysEugen GoldsteinEarly Atomic Theory19th Century
Germany☢️ Wilhelm Röntgen: X-rays
PhysicsX-raysRöntgen, Wilhelm ConradMedical ImagingIonizing RadiationElectromagnetic RadiationCathode Rays19th Century PhysicsRadiologyDiscovery
Germany⚛️ Wien Demonstrates Deflection of Canal Rays by Magnetic Fields
Wilhelm Wien demonstrates that canal rays (streams of positive ions) can be deflected by magnetic fields, and that the amount of deflection is proportional to the mass-to-charge ratio. This discovery would lead to the analytical technique known as mass spectrometry.⟶
PhysicsMass SpectrometryIonCanal RaysMagnetic FieldsWilhelm WienAnalytical Chemistry19th Century Physics
Germany🔬 Mass Spectrometry Technique
J. J. Thomson expanding on the work of Wien, shows that charged subatomic particles can be separated by their mass-to-charge ratio, a technique known as mass spectrometry.⟶
Mass SpectrometryJ.J. ThomsonAnalytical ChemistryIsotopesSpectroscopyEarly 20th Century Chemistry
United Kingdom