Albert G. Ingalls's Amateur Telescope Making Vol 3 PDF
By Albert G. Ingalls
Fresh publication. quantity three HARDCOVER. send swifter FROM TX.
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Additional info for Amateur Telescope Making Vol 3
Physics was a subject for which Planck himself felt he had no particular talent, but he had risen through the academic ranks and established a solid international reputation. Now in his early forties, he worked at a slow, steady, and conservative pace. He preferred the stability and predictability of a science which reﬂected the character of the bourgeois German society of which he was a part. By his own subsequent admission he was ‘peacefully inclined’, and rejected ‘all doubtful adventures’. During a visit to Planck’s villa in the Berlin suburb of the Grünewald on 7 October 1900, experimental physicist Heinrich Rubens had told him about some new experimental results he had obtained with his associate Ferdinand Kurlbaum.
Planck had used a statistical procedure, distributing the ﬁxed energy elements over the oscillators, without giving much thought to the physical signiﬁcance of this step. If atoms and molecules were real entities, something Planck was now ready to accept, then in his own mind energy itself remained determinedly continuous, to ﬂow uninterrupted back and forth between radiation and matter. But in deriving his radiation law, Planck had inadvertently introduced the idea that energy itself could be ‘quantized’.
He started work there the following March. ’ Bohr initially set to work on experiments on the absorption of alphaparticles by aluminium. But experimental physics was not his forte, and after a few weeks he asked Rutherford if he could instead work on theoretical problems. Although Rutherford took a keen interest in the various research programmes and the work of his associates, he was busy writing a book on the physics of radioactive substances and had little time for extensive discussions. Bohr learnt what he needed about radioactivity from two Manchester colleagues, George von Hevesy and Charles Darwin (whom Bohr would always introduce to others as the grandson of the ‘real’ Darwin).
Amateur Telescope Making Vol 3 by Albert G. Ingalls