Answer: Marie Curie studied the radiation of all compounds containing the known radioactive elements, including uranium and thorium, which she later discovered was also radioactive. She also found out that:
- you can exactly measure the strength of the radiation from uranium;
- the intensity of the radiation is proportional to the amount of uranium or thorium in the compound - no matter what compound it is;
- the ability to emit radiation does not depend on the arrangement of the atoms in a molecule; it must be linked to the interior of the atom itself - a revolutionary discovery!
When she realized that some uranium and/or thorium compounds had stronger radiation than uranium, she made the following hypothesis: there must be an unknown element in the compound which had a stronger radiation than uranium or thorium. Her work aroused the interest of her husband, Pierre Curie, who stopped his own research on crystals and joined the "detective work" with his wife. And Marie was proven right
Answer: The President, the Vice President, and all United States Civil Officers shall be suspended from the Office of Impeachment for, and Prosecution of, Treason, Bribery, or Other High Crimes and Misdemeanors.
Explanation:
Answer:
One of his targets was the Catholic Church, which he believed had too much influence, particularly in southern Germany. He also worked to prevent the spread of socialism, partly by introducing health insurance and pensions. Abroad, Bismarck aimed to make the German empire the most powerful in Europe.
Explanation:
The U.S. government took over and ran the railroads from 26 December 1917 to 1 March 1920. During the period of government operation, the tracks were obliged to carry a heavy volume of traffic with little attention to replacements or ordinary maintenance.
