1525Introduction of the Modern Square Root Symbol

Modern square root symbol (√)
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1596

√ Introduction of the Modern Square Root Symbol

Modern square root symbol (√)
Introduction of the Modern Square Root Symbol (1525)
MathematicsAlgebraSymbolismRenaissanceScientific RevolutionNumbers

📷 Camera Obscura Introduced in Europe

Camera obscura is first used in Europe by Giambattista della Porta of Italy.
Camera Obscura Introduced in Europe (1558)
OpticsRenaissance
ItalyItaly

🔭 Galileo Galilei's Birth

Galileo Galilei born on February 15
Galileo Galilei's Birth (1564)
AstronomyRenaissanceScientific RevolutionGalileo GalileiPhysicsHeliocentrismScientific MethodItalian RenaissanceTelescopeCosmology
ItalyItaly

🌡️ Galileo Galilei Develops the Thermometer

Galileo Galilei Develops the Thermometer (1593)
Galileo GalileiScientific RevolutionInstrumentationMeasurementPhysics
ItalyItaly

🧠 Birth of Philosopher René Descartes

Birth of Philosopher René Descartes (1596)
RenaissanceMathematicsPhilosophyScientific RevolutionRationalismMetaphysicsEpistemology
FranceFrance