1930 ⟶ Phase-Contrast Microscopy Invented
The Phase-contrast microscopy is invented by Frits Zernike.Year
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1930
🔬 Willebrord Snellius Formulates the Law of Refraction
Willebrord Snellius: the law of refraction also known as Snell's law.⟶

PhysicsOpticsScientific RevolutionMathematics

🐛 Swammerdam's Epigenesis Research in Insects
🧪 Van 't Hoff Publishes 'Études de dynamique chimique'
Jacobus Henricus van 't Hoff: discovered the laws of chemical dynamics and osmotic pressure in solutions (in his work "Études de dynamique chimique").⟶

ChemistryPhysical ChemistryThermodynamicsScientific Publication

🦠 Beijerinck Defines Viruses as Infectious Agents
Martinus Beijerinck: concluded that a virus is infectious—replicating in the host—and thus not a mere toxin, and gave it the name "virus"⟶

Infectious DiseasesMicrobiologyGerm TheoryMedical History19th Century Science

⚡ Heike Kamerlingh Onnes Discovers Superconductivity

PhysicsDiscoveryScientific BreakthroughMaterial ScienceNobel Prize

🔬 Phase-Contrast Microscopy Invented
The Phase-contrast microscopy is invented by Frits Zernike.⟶

MicroscopyOpticsScientific InstrumentsCell Biology
