Question

who give quantum theory???

Answer 1

Max Planck, Niels Bohr, Werner Heisenberg, Louis de Broglie, Arthur Compton, Albert Einstein, Erwin Schrödinger, Max Born, John von Neumann, Paul Dirac, Enrico Fermi, Wolfgang Pauli, Max von Laue, Freeman Dyson, David Hilbert, Wilhelm Wien, Satyendra Nath Bose, Arnold Sommerfeld.

these all established quantum mechanics during half of 20 century.

Answer 2

$\huge{\underline{\underline{\boxed{\boxed{\mathfrak{\red{Hi \:Dear}}}}}}}$

${\large\bf{\mid{\overline{\underline{Max \:Planck}}}\mid}}$