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Marie Curie

Radio-active Substances

“Radio-active Substances” by Marie Skłodowska Curie. Published by Good Press. Good Press publishes a wide range of titles that encompasses every genre. From well-known classics & literary fiction and non-fiction to forgotten−or yet undiscovered gems−of world literature, we issue the books that need to be read. Each Good Press edition has been meticulously edited and formatted to boost readability for all e-readers and devices. Our goal is to produce eBooks that are user-friendly and accessible to everyone in a high-quality digital format.
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Prvi put objavljeno
2020
Godina izdavanja
2020
Izdavač
Good Press

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Citati

  • Aidee Venturaje citiralaпре 3 године
    Pitchblende is an expensive ore, and we have given up the treatment of it in large quantities. In Europe the extraction of this ore is carried out in the mine of Joachimsthal, in Bohemia. The crushed ore is roasted with carbonate of soda, and the resulting material washed, first with warm water and then with dilute sulphuric acid. The solution contains the uranium, which gives pitchblende its value. The insoluble residue is rejected. This residue contains radio-active substances; its activity is four and a half times that of metallic uranium. The Austrian Government, to whom the mine belongs, presented us with a ton of this residue for our research, and authorised the mine to give us several tons more of the material.
  • Aidee Venturaje citiralaпре 3 године
    The flame spectrum of radium contains two beautiful red bands, one line in the blue-green, and two faint lines in the violet

    Awwww *-*

  • Aidee Venturaje citiralaпре 3 године
    Radium is, so far, the only member of the new radio-active substances that has been isolated as the pure salt

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