Ernst Ruska

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Ernst Ruska was, for all intents and purposes the inventor of the Electron Microscope. He designed and built many such machines over his long life, starting in the university Berlin, and later working for Siemens where he created the famous Elmiskop Series.

He invented the Transmission electron microscope together with his friend Bodo von Borries and Max Knoll.

papers


Transmission Electron Microscopes

University Berlin

These where the devices and Microscopes created by Ernst Ruska during his time at the University of Berlin.


High Speed Oscillograph Electron Source
 
General
Year 1933
Successor Prototype 1
Magnification Range N/A
Magnification Gauge Type N/A
Specemin Chamber Pressure 1e⁻3 Torr
Power Consumption
System Weight
Electrion Source
Accelerator Type Kanalstrahlrohr
Cathode Type Gas Discharge
Accelerating Voltage 75 KV
Stability
Cathode Heating Methode Ion Bombardment
Alignment Methode
Condensor
Number of Condensor Lenses 2
Stability
Stigmator
Minimum Spot Size Diameter
Condensor Alignment
Lens Type Electromagnetic
Stage
Holder Type N/A
X, Y Travel Range N/A
Objective Lens
Focal Length N/A
Adjustment Range N/A
Spherical Error N/A
Stability N/A
Stigmator N/A
Alignment Aids N/A
Point Resolution N/A Å
Lens Type N/A
Projective Lens
Number of Projective Lens N/A
Stability N/A
Polpeace Configuration N/A
Avalible Polpeace Magnification(s) N/A
Alignment N/A
Lens Type N/A


Prototyp 1
 
General
Year 1933
Successor Prototype 2
Magnification Range
Magnification Gauge Type
Specemin Chamber Pressure 1e-3 Torr
Power Consumption
System Weight
Electrion Source
Accelerator Type Kanalstrahlrohr
Cathode Type Gas Discharge
Accelerating Voltage 75 KV
Stability
Cathode Heating Methode Ion Bombardment
Alignment Methode
Condensor
Number of Condensor Lenses 1
Stability
Stigmator
Minimum Spot Size Diameter
Condensor Alignment
Lens Type Electromagnetic
Stage
Holder Type Cartridge, Top Entry
X, Y Travel Range
Objective Lens
Focal Length
Adjustment Range
Spherical Error
Stability
Stigmator
Alignment Aids
Point Resolution 500 Å [1] Å
Lens Type Electromagnetic
Projective Lens
Number of Projective Lens 1
Stability
Polpeace Configuration Single Polpiece
Avalible Polpeace Magnification(s)
Alignment
Lens Type Electromagnetic

Siemens

  1. Geoffrey A. Meek, Practical Electron Microscopy for the Biologist, 2nd Edition (1976), Page 57