Field of study: Chemistry, Kernfysica, Physics

• A method for obtaining narrow absorption lines of metallic vapours for investigations in strong magnetic fields
  KNAW, Proceedings, 15 II, 1912-1913, Amsterdam, 1913, pp. 1129-1129
  
  
• An optical method for determining the ratio between the mean and maximal velocities in the turbulent motion of fluids in a cylindrical tube. Contribution to the experiment of Fizeau
  KNAW, Proceedings, 18 II, 1916, Amsterdam, 1916, pp. 1240-1247
  
  
• Change of wavelenght of the middle line of triplets ( first part).
  KNAW, Proceedings, 10 II, 1907-1908, Amsterdam, 1908, pp. 574-578
  
  
• Change of wavelength of the middle line of triplets. (Second Part)
  KNAW, Proceedings, 10 II, 1907-1908, Amsterdam, 1908, pp. 862-865
  
  
• Considerations concerning light radiation under the simultaneous influence of electric and magnetic forces and some experiments thereby suggested (first part)
  KNAW, Proceedings, 14 I, 1911, Amsterdam, 1911, pp. 2-11
  
  
• Direct optical measurement of the velocity at the axis in the apparatus for Fizeau's experiment
  KNAW, Proceedings, 19 I, 1917, Amsterdam, 1917, pp. 125-132
  
  
• Double refraction near the components of absorption lines magnetically split into several components
  KNAW, Proceedings, 7, 1904-1905, Amsterdam, 1905, pp. 435-438
  
  
• Electric double refraction in some artificial clouds and vapours (first part)
  KNAW, Proceedings, 14 II, 1911-1912, Amsterdam, 1912, pp. 558-562
  
  
• Electric double refraction in some artificial clouds and vapours (second part)
  KNAW, Proceedings, 14 II, 1911-1912, Amsterdam, 1912, pp. 786-788
  
  
• Electric double refraction in some artificial clouds and vapours. (Third part)
  KNAW, Proceedings, 15 I, 1912, 1912, pp. 178-184
  
  
• Fresnel's coefficient for light of different colours. (First part)
  KNAW, Proceedings, 17 I, 1914, Amsterdam, 1914, pp. 445-451
  
  
• Fresnel's coefficient for light of different colours. (Second part)
  KNAW, Proceedings, 18 I, 1915, Amsterdam, 1915, pp. 398-408
  
  
• Magnetic resolution of spectral lines and magnetic force (2nd part.)
  KNAW, Proceedings, 10 I, 1907, Amsterdam, 1907, pp. 351-359
  
  
• Magnetic resolution of spectral lines and magnetic force. (1st part.)
  KNAW, Proceedings, 8 II, 1905-1906, Amsterdam, 1906, pp. 814-817
  
  
• Magnetic resolution of spectrum lines and temperature
  KNAW, Proceedings, 16 I, 1913, Amsterdam, 1913, pp. 158-159
  
  
• New observations concerning asymmetrical triplets
  KNAW, Proceedings, 10 II, 1907-1908, Amsterdam, 1908, pp. 566-574
  
  
• Note on the insulating power of liquid air for high potentials and on the Kerr electro-optic effect of liquid air
  KNAW, Proceedings, 14 II, 1911-1912, Amsterdam, 1912, pp. 650-655
  
  
• Observations of the magnetic resolution of spectral lines by means of the method of Fabry and Perot
  KNAW, Proceedings, 10 II, 1907-1908, Amsterdam, 1908, pp. 440-445
  
  
• Observations on the magnetic rotation of the plane of polarisation in the interior of an absorption band
  KNAW, Proceedings, 5, 1902-1903, Amsterdam, 1902, pp. 41-47
  
  
• On an Asymmetry in the Change of the spectral Lines of Iron, radiating in a Magnetic Field
  KNAW, Proceedings, 1, 1898-1899, Amsterdam, 1899, pp. 98-100
  
  
• On the double refraction in a magnetic field near the components of a quadruplet
  KNAW, Proceedings, 6, 1903-1904, Amsterdam, 1904, pp. 19-21
  
  
• On the passage of light through the slit of a spectroscope
  KNAW, Proceedings, 18 I, 1915, Amsterdam, 1915, pp. 412-415
  
  
• On the polarisation impressed upon light by traversing the slit of spectroscope and some errors resulting therefrom
  KNAW, Proceedings, 15 I, 1912, 1912, pp. 599-602
  
  
• Some experiments on gravitation. The ratio of mass to weight for crystals and radioactive substances
  KNAW, Proceedings, 20 I, 1918, Amsterdam, 1918, pp. 542-553
  
  
• Some Observations concerning an Asymmetrical Change of the Spectral Lines of Iron, radiating in a Magnetic field
  KNAW, Proceedings, 2, 1899-1900, Amsterdam, 1900, pp. 298-301
  
  
• Some observations on the resolving power of the MICHELSON echelon-spectroscope
  KNAW, Proceedings, 4, 1901-1902, Amsterdam, 1902, pp. 247-251
  
  
• The degree of completeness of the circular polarisation of magnetically divided lines
  KNAW, Proceedings, 12, 1909-1910, Amsterdam, 1910, pp. 345-356
  
  
• The intensities of the components of spectral lines divided by magnetism
  KNAW, Proceedings, 10 I, 1907, Amsterdam, 1907, pp. 289-292
  
  
• The law of shift of the central component of a triplet in a magnetic field
  KNAW, Proceedings, 11, 1908-1909, Amsterdam, 1909, pp. 473-477
  
  
• The magnetic separation of absorption lines in connection with Sun-spot spectra
  KNAW, Proceedings, 12, 1909-1910, Amsterdam, 1910, pp. 584-596
  
  
• The magnetic separation of absorption lines in connection with Sun-spot spectra. (Second Part)
  KNAW, Proceedings, 13 I, 1910, Amsterdam, 1910, pp. 35-44
  
  
• The magnetic separation of absorption lines in connection with Sun-spot spectra. 3rd part
  KNAW, Proceedings, 13 I, 1910, Amsterdam, 1910, pp. 162-171
  
  
• The Propagation of Light in Moving Transparent solid substances. I. Apparatus for the Observation of the Fizeau-effect in Solid Substances
  KNAW, Proceedings, 22 I, 1919-1920, Amsterdam, 1919, pp. 462-470
  
  
• The Propagation of Light in Moving, Transparent, Solid Substances. II. Measurements on the Fizeau-effect in Quartz
  KNAW, Proceedings, 22 II, 1920, Amsterdam, 1920, pp. 512-522
  
  
• The red lithium line
  KNAW, Proceedings, 15 II, 1912-1913, Amsterdam, 1913, pp. 1130-1131
  
  
• The red lithium line and the spectroscopic determination of atomic weights
  KNAW, Proceedings, 16 I, 1913, Amsterdam, 1913, pp. 155-157