Lorentz publishes the complete electromagnetic force equation F = q(E + v x B) for …

Perrin collects cathode rays in a Faraday cup electrometer, proving negative electric charge.

Pierre Curie formulates Curie's Law (chi = C / T) and discovers the ferromagnetic Curie …

Published the complete electromagnetic force equation F = q(E + v x B).

Formulated Curie's Law (chi = C/T) and discovered the critical Curie Temperature (T_C).

Isolated terrestrial Helium gas (He) from cleveite ore, confirming D3 solar spectral line.

Formulated Wien's exponential radiation law u(nu, T) = A nu^3 exp(-B nu / T).

Discovered penetrating X-Radiation (X-Strahlen).

Collected cathode rays in Faraday cup electrometer, proving negative charge.