1903 Mr. and Mrs. Curie and becquerel won the Nobel Prize in physics for their research on radioactivity.191kloc-0/won the Nobel Prize in chemistry again in, becoming the first person in the world to win the Nobel Prize twice.
Madame Curie's achievements include initiating the theory of radioactivity, inventing the technology of separating radioactive isotopes, and discovering two new elements: polonium and radium. Under her guidance, people used radioisotopes to treat cancer for the first time. Due to long-term exposure to radioactive substances, Madame Curie died of malignant leukemia on July 3, 1934.
Extended data:
Scientific research achievements:
1. radioactive elements polonium and radium were discovered.
2. Propose that-rays (now known to be composed of electrons) are negatively charged particles.
Decay of radium:
Radioactive elements will produce different substances after decay for a period of time (the decay rates of various elements are different). Radium is one of them.
Radium decay rate:
The decay rate of radium is proportional to its existing quantity r->; dR = rλdt-& gt； dR/R =λdt-& gt； LnR=Ce^(λt)
t=0，R = R0-& gt； R=R0e^(λt)
After 1600 years of radium, only1/2-> of the original amount R0 remains; 1/2=e^( 1600λ)-& gt； λ=(-Ln2)/ 1600-& gt； R=R0e^[(-Ln2)*t/ 1600]
Alpha decay equation of radium: The figure below shows the alpha equation of radium.
Baidu Encyclopedia-Marie Curie