Cathode Ray Penetration
Studies how cathode rays penetrate matter through thin windows, establishing characteristic absorption and scattering behaviour.
Historical biography archive · Updated 2026-11-03
Philipp Lenard Biography and Timeline
Follow Philipp Lenard through 3 dated historical records for Germany.
Philipp Lenard, historical timeline
A chronological timeline drawn from matching World History Database records.
3Distinct records
1 of 1Page
1898–1902Years on this page
1898
1899
Cathode-Ray Absorption Studies
Studies how cathode rays penetrate matter and helps establish their particle-like behaviour.
1902
Photoelectric Electron Energy
Shows that photoelectron energy depends strongly on light frequency rather than simply on intensity.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.