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• WHO HELPED DISCOVER RADIUM AND POLONIUM FREE

"There are sadistic scientists who hurry to hunt down error instead of establishing the truth.".“A scientist in his laboratory is not a mere technician: He is also a child confronting natural phenomena that impress him as though they were fairy tales.”."Be less curious about people and more curious about ideas.".To that end, each of us must work for his own improvement, and at the same time share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful." "You cannot hope to build a better world without improving the individuals.In Curie’s case, the condition was likely the result of all the radiation she absorbed while handling incredibly hazardous materials-including the two elements she helped discover-without taking the proper safety precautions. Aplastic anemia occurs when the body fails to produce new red blood cells at a healthy rate. Marie Curie died of aplastic anemia in 1934 at age 66. Skłodows­ka-Curie read lec­tures on ra­dioac­tiv­i­ty to stu­dents of the uni­ver­si­ty.Marie Curie driving a mobile radiological unit. Af­ter her hus­band’s death, Marie took his place at the Sor­bonne and be­came the first fe­male pro­fes­sor in his­to­ry. In 1906 Pierre Curie fell un­der a horse-drawn cart and died in­stant­ly. Con­tri­bu­tion to the de­vel­op­ment of sci­ence

Click here to find out more dis­cov­er­ies that made sci­en­tists world-fa­mous. In 1906, Pierre and Marie dis­cov­ered that an el­e­ment con­tained in the cells of all liv­ing crea­tures on Earth was ra­dioac­tive – an iso­tope of potas­si­um.

The sci­en­tists es­tab­lished that all the heavy el­e­ments at the bot­tom of the pe­ri­od­ic ta­ble had ra­dioac­tive prop­er­ties. It filled the 88th place in the pe­ri­od­ic ta­ble.Īf­ter ra­di­um and polo­ni­um, Marie and Pierre Curie dis­cov­ered a num­ber of oth­er ra­dioac­tive el­e­ments. At the end of that year the Curies dis­cov­ered ra­di­um, a shiny al­ka­line earth met­al, with ra­dioac­tive prop­er­ties. This sil­ver-white soft met­al filled one of the emp­ty spa­ces in Mendeleev’s pe­ri­od­ic ta­ble of chem­i­cal el­e­ments – num­ber 86. In 1898, Pierre and Marie dis­cov­ered a new ra­dioac­tive el­e­ment and called it “polo­ni­um” in hon­or of Poland, Marie’s home­land. The cou­ple in­tro­duced the word “ra­dioac­tiv­i­ty”, re­veal­ing the essence of the phe­nom­e­non dis­cov­ered by Bec­quer­el. Pierre and Marie Curie con­tin­ued Bec­quer­el’s work, study­ing the phe­nom­e­non of the ra­di­a­tion of met­als, in­clud­ing ura­ni­um. But the sci­en­tist was un­able to re­veal the na­ture of the phe­nom­e­non he had dis­cov­ered. Bec­quer­el be­lieved that the ra­di­a­tion of ura­ni­um was a process re­sem­bling the prop­er­ties of light waves. They re­de­fined the sig­nif­i­cance of Bec­quer­el’s dis­cov­ery, who had dis­cov­ered the ra­dioac­tive prop­er­ties of ura­ni­um and com­pared it to phos­pho­res­cence. The cou­ple be­gan to study ra­dioac­tive el­e­ments. In 1895 Maria mar­ried Pierre Curie The stud­ies of Pierre and Marie Curie In 1893, Marie re­ceived a de­gree in physics, and in math­e­mat­ics in 1894.

WHO HELPED DISCOVER RADIUM AND POLONIUM FREE

One of the finest pupils at the uni­ver­si­ty, Skłodows­ka stud­ied chem­istry and physics, and de­vot­ed her free time to in­de­pen­dent stud­ies. Af­ter grad­u­at­ing from high school, she en­rolled in the physics and math­e­mat­ics fac­ul­ty of the Sor­bonne. Marie Skłodows­ka was born in War­saw, into the fam­i­ly of a teach­er. In 1891 Pierre made ex­per­i­ments on mag­netism and dis­cov­ered Curie’s law – on the de­pen­dence of para­m­ag­net­ic bod­ies on the tem­per­a­ture. The broth­ers con­tin­ued their pro­duc­tive co­op­er­a­tion for five years, but then they part­ed ways. Pierre and Jacques Curie learned to use piezo­quartz to mea­sure weak cur­rents and elec­tri­cal charges. The young men cre­at­ed piezo­quartz, and stud­ied its elec­tric de­for­ma­tions. If this crys­tal is elon­gat­ed, elec­tric­i­ty is re­leased in the op­po­site di­rec­tion.Īf­ter this, the Curie broth­ers dis­cov­ered the op­po­site ef­fect of the de­for­ma­tion of crys­tals un­der the in­flu­ence of high volt­age. In ex­per­i­ments, the broth­ers con­clud­ed that as a re­sult of the com­pres­sion of a hemi­he­dral crys­tal with un­even edges, elec­tri­cal po­lar­iza­tion of a spe­cif­ic di­rec­tion aris­es. At the be­gin­ning of his sci­en­tif­ic ca­reer, the young man dis­cov­ered piezo­elec­tric­i­ty, to­geth­er with his broth­er Jacques.