1758 CE
Introduction of the Blowpipe
Swedish chemist Axel Fredrik Cronstedt uses the blowpipe in mineral analysis, a precursor to flame tests. #chemistry #analytical )
Chronological Storyline (44 Milestones)
1800 CE
William Herschel Discovers Infrared Radiation
Herschel's experiment with prisms reveals infrared light, laying groundwork for absorption spectroscopy. #spectroscopy #science
1802 CE
Fraunhofer Lines Discovered
Joseph von Fraunhofer maps dark lines in the solar spectrum, later used for elemental analysis. #spectroscopy #astronomy
1859 CE
Bunsen and Kirchhoff Develop Spectroscope
Robert Bunsen and Gustav Kirchhoff invent the spectroscope, enabling flame test analysis of elements. #spectroscopy #chemistry
1860 CE
Discovery of Rubidium and Caesium
Bunsen and Kirchhoff use spectroscopy to discover rubidium and caesium. #chemistry #periodictable
1868 CE
Helium Discovered via Solar Spectrum
Pierre Janssen and Norman Lockyer detect helium in the solar spectrum using spectroscopy. #spectroscopy #elements
1885 CE
Balmer Series for Hydrogen
Johann Balmer formulates a mathematical formula for hydrogen spectral lines, advancing quantum theory. #spectroscopy #physics
1895 CE
Wilhelm Röntgen Discovers X-rays
Röntgen's discovery of X-rays leads to X-ray diffraction techniques. #xrays #physics
1900 CE
Max Planck Proposes Quantum Theory
Planck's quantum hypothesis explains blackbody radiation, foundational for spectroscopy. #quantum #physics
1901 CE
First Mass Spectrometer (Thomson's Parabola)
J.J. Thomson constructs the first mass spectrometer to measure mass-to-charge ratio of ions. #massspectrometry #physics
1912 CE
Bragg's Law of X-Ray Diffraction
William Henry Bragg and William Lawrence Bragg derive Bragg's law, enabling crystal structure analysis. #xray #crystallography
1913 CE
Moseley's Law and Atomic Numbers
Henry Moseley uses X-ray spectroscopy to establish atomic numbers and predict missing elements. #spectroscopy #chemistry
1919 CE
Aston's Mass Spectrograph
Francis William Aston invents the mass spectrograph, discovering isotopes and winning the Nobel Prize. #massspectrometry #isotopes
1922 CE
Stern–Gerlach Experiment
Otto Stern and Walther Gerlach demonstrate quantized angular momentum, influencing NMR. #quantum #physics
1928 CE
Raman Effect Discovered
C.V. Raman discovers inelastic scattering of light, leading to Raman spectroscopy. #spectroscopy #india
1931 CE
Pauling's Electronegativity Scale
Linus Pauling introduces electronegativity, influencing chemical shift in NMR. #chemistry #theory
1937 CE
First Mass Spectrometer for Organic Compounds
Josef Mattauch and Richard Herzog develop a double-focusing mass spectrometer for precise mass analysis. #massspectrometry
1942 CE
Development of Paper Chromatography
Archer Martin and Richard Synge invent paper chromatography, revolutionizing separation science. #chromatography #chemistry
1945 CE
First NMR Signal Detected
Felix Bloch and Edward Purcell independently detect nuclear magnetic resonance, laying foundation for NMR spectroscopy. #nmr #physics
1950 CE
Chemical Shift and Spin-Spin Coupling in NMR
Procter and Yu, and others observe chemical shifts and coupling, enabling structural analysis. #nmr #chemistry
1952 CE
Nobel Prize for NMR
Felix Bloch and Edward Purcell awarded Nobel Prize for NMR discoveries. #nmr #nobel
1953 CE
Watson and Crick Use X-Ray Diffraction for DNA
Rosalind Franklin's X-ray diffraction data helps determine DNA helical structure. #xray #biology
1958 CE
Development of Gas Chromatography-Mass Spectrometry (GC-MS)
First coupling of gas chromatography and mass spectrometry by James and Martin. #gcms #analytical
1964 CE
Discovery of ICP (Inductively Coupled Plasma)
Greenfield and Fassel develop inductively coupled plasma for atomic spectroscopy. #icp #spectroscopy
1966 CE
First Fourier Transform NMR
Richard Ernst introduces Fourier transform NMR, dramatically improving sensitivity. #nmr #chemistry
1969 CE
High-Performance Liquid Chromatography (HPLC) Developed
Horváth and Preiss introduce HPLC, revolutionizing separation of non-volatile compounds. #hplc #chromatography
1970 CE
Electrospray Ionization (ESI) Introduced
Malcolm Dole and later John Fenn develop electrospray ionization for mass spectrometry. #massspectrometry #esi
1974 CE
First Two-Dimensional NMR
Richard Ernst and others propose and demonstrate 2D NMR experiments. #nmr #chemistry
1975 CE
Matrix-Assisted Laser Desorption/Ionization (MALDI) Invented
Franz Hillenkamp and Michael Karas invent MALDI for soft ionization of biomolecules. #massspectrometry #maldi
1976 CE
ICP-MS Developed
First inductively coupled plasma mass spectrometry (ICP-MS) instrument by Houk et al. #icpms #analytical
1981 CE
Scanning Tunneling Microscope (STM) Invented
Binnig and Rohrer invent STM, enabling atomic-scale surface analysis. #microscopy #physics
1985 CE
Mass Spectrometry for Protein Sequencing
Tandem mass spectrometry (MS/MS) used for protein sequencing by Biemann and others. #proteomics #massspec
1986 CE
Atomic Force Microscope (AFM) Invented
Binnig, Quate, and Gerber invent AFM for surface imaging at nanoscale. #microscopy #physics
1989 CE
Nobel Prize for Mass Spectrometry of Biomolecules
John Fenn and Koichi Tanaka share Nobel Prize for ESI and MALDI developments. #massspec #nobel
1991 CE
First X-Ray Free-Electron Laser (XFEL) Concept
Theoretical proposal for XFEL enables ultrafast X-ray diffraction. #xray #laser
1998 CE
Protein Structure via NMR
NMR becomes a standard tool for determining 3D structures of proteins in solution. #nmr #structuralbiology
2002 CE
Nobel Prize for Mass Spectrometry of Biological Macromolecules
John Fenn and Koichi Tanaka awarded Nobel for developing soft desorption ionization methods. #massspec #chemistry
2009 CE
First Single-molecule Mass Spectrometry
Single-molecule mass spectrometry achieved using nanoelectromechanical systems (NEMS). #massspec #nanotech
2010 CE
X-Ray Diffraction at Free-Electron Lasers
First protein structure solved using serial femtosecond crystallography at LCLS. #xray #crystallography
2012 CE
Nobel Prize for X-ray Crystallography of Membrane Proteins
Brian Kobilka and Robert Lefkowitz win Nobel for GPCR studies using X-ray crystallography. #xray #biology
2014 CE
Development of Cryo-Electron Microscopy for High Resolution
Jacques Dubochet, Joachim Frank, and Richard Henderson win Nobel for cryo-EM, complementing X-ray diffraction. #cryoem #structuralbiology
2017 CE
Portable Mass Spectrometry Advances
Miniature mass spectrometers become field-deployable for environmental and forensic analysis. #massspec #portable
2020 CE
COVID-19 Spike Protein Structure via Cryo-EM and X-ray
Structural determination of SARS-CoV-2 spike protein using X-ray and cryo-EM aids vaccine development. #structuralbiology #covid19
2022 CE
AlphaFold Predicts Protein Structures via Computational Methods
AI-based AlphaFold revolutionizes structural biology, complementing experimental diffraction methods. #ai #structuralbiology