The term half-life describes how long it will take for half of the atoms to decay, and is constant for a given isotope. The curie the unit of measure used to describe the radioactivity of radioactive material. (1C = 3.7 X 1010 disintegrations/sec)
Maria Callas, 53, Is Dead of Heart Attack in Paris. By RAYMOND ERICSON. Maria Callas, the soprano whose intensely dramatic portrayals made her the most exciting opera singer of her time, died of a heart attack yesterday at her home in Paris. She was 53 years old.
This is where the Sound of Music starts the story of Mariaâs lifeâ¦.. Baron Georg Ritter von Trapp, recently widowed with seven children, Rupert, Agathe, Maria, Werner, Hedwig, Johanna and Martina, needed a governess for one of his children, also called Maria, who was weak with rheumatic fever.e could start The Sound of Music true story with the real Maria von Trapp, then Maria Augusta Kutschera, who was born on a train going to Vienna. She became an orphan at a young age, and was brought up by a distant relative.