Date in year · 1900 · The 1900s
October 19, 1900
On October 19, 1900, max Planck discovers Planck's law of black-body radiation.
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Featured · October 19, 1900
Max Planck discovers Planck's law of black-body radiation.
Max Karl Ernst Ludwig Planck was a German theoretical physicist.
Around 1900
The year in brief
1900 (MCM) was an exceptional century common year starting on Monday of the Gregorian calendar and a leap year starting on Saturday of the Julian calendar, the 1900th year of the Common Era (CE) and Anno Domini (AD) designations, the 900th year of the 2nd millennium, the 100th and last…
What happened
On October 19, 1900
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1900 Max Planck discovers Planck's law of black-body radiation. German physicist (1858–1947)
Max Karl Ernst Ludwig Planck was a German theoretical physicist.
Elsewhere that year
Other moments from 1900
- April 1 Prince George becomes absolute monarch of the Cretan State.
- April 10 British suffer a sharp defeat by the Boers south of Brandfort. Six hundred British troops are killed and wounded and 800 taken prisoner.
- April 12 One day after its enactment by the Congress, President William McKinley signs the Foraker Act into law, giving Puerto Rico limited self-rule.
- April 14 The world's fair Exposition Universelle opens in Paris.
- April 15 Philippine–American War: Filipino guerrillas launch a surprise attack on U.S. infantry and begin a four-day siege of Catubig, Philippines.
- April 26 Fires destroy Canadian cities Ottawa and Hull, reducing them to ashes in 12 hours. Twelve thousand people are left without a home.
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