1. Who first developed the scanning tunneling microscope and when?
2. Who was able to see the first Nitrogen atom?
3. After how long when Democritus first proposed the drawings of an atom do we get the visual confirmation that atoms do exist?
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1. The development of the family of scanning probe microscopes started with the original invention of the STM in 1981. Gerd Binnig and Heinrich Rohrer developed the first working STM while working at IBM Zurich Research Laboratories in Switzerland.
3. The modern atomic theory, proposed about 1803 by the English chemist John Dalton (Figure 4.2. 1), is a fundamental concept that states that all elements are composed of atoms.
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Answer: 1. Gerd Binnig and Heinrich Rohrer in 1981.
2. Daniel Rutherford
3. After 2000 years
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