Question

Meson was discovered by
1. Anderson
2. Glenn T. Seaborg
3. Yukawa
4. Soddy and Fajan
5. None of the above/More than one of the above.

Answer 1

Correct Answer - Option 3 : Yukawa

The correct answer is Yukawa.

• Meson, any member of a family of subatomic particles composed of a quark and an antiquark.
• Mesons are sensitive to the strong force, the fundamental interaction that binds the components of the nucleus by governing the behaviour of their constituent quarks.
• More than 200 mesons have been produced and characterized in the intervening years, most in high-energy particle-accelerator experiments.
• All mesons are unstable, with lifetimes ranging from 10−8 seconds to less than 10−22 seconds.
• They also vary widely in mass, from 140 megaelectron volts (MeV; 106 eV) to nearly 10 gigaelectron volts (GeV; 109 eV).
• Mesons serve as a useful tool for studying the properties and interactions of quarks.
• Predicted theoretically in 1935 by the Japanese physicist Yukawa Hideki.

• Anderson-
  • By studying the tracks of cosmic ray particles in a cloud chamber, in 1932 Carl Anderson discovered a positively-charged particle with a mass seemingly equal to that of an electron.
  • Carl Anderson's article was the first antiparticle proven by experiment and was named a "positron".
• Glenn T. Seaborg-
  • ​American nuclear chemist knew for his work on isolating and identifying transuranium elements (those heavier than uranium).
  • He shared the 1951 Nobel Prize for Chemistry with Edwin Mattison McMillan for their independent discoveries of transuranium elements.
  • Seaborgium was named in his honour, making him the only person for whom a chemical element was named during his lifetime.
• Soddy and Fajan-
  • Kasimir Fajans is a Polish-American physical chemist who discovered the radioactive displacement law simultaneously with Frederick Soddy of Great Britain.
  • According to this law, when a radioactive atom decays by emitting an alpha particle, the atomic number of the resulting atom is two fewer than that of the parent atom. When a beta particle is emitted, the atomic number is one greater.