Qeexid

"Wax iib u raadin. ld beeci."

Wadaag:

Tusaale

Ogeysiis! qoraalkan, waa tusaale la xariir erayga biici oo kali ah:
  • Curiyaha Bohriyaam waxaa loogu magac daray saynisyahanka reer Denmark ee Niels Bohr, waana curiye lagu sameeyo laabka (laboratory) oon laga helin dhulka ayadoo dabiici ah.
  • Curiyaha Robiidhiyaam sida dabiiciga ah waxa la helaa asagoo ah labo isotope: 85 Rb mid leh isotope degan, iyo 87 Rb oo ah radioactive.