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Bab
7 Fizik Kuantum
Quantum Physics
7.1 Teori Kuantum Cahaya Buku Teks
Quantum Theory of Light m.s. 224-233
Nota
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1. Berikut adalah penemuan ahli-ahli fizik terhadap perkembangan teori kuantum.
The following is the discovery of physicists on the development of quantum theory
Isaac Newton Menyimpulkan Thomas Young Menunjukkan
1643 – 1727 bahawa cahaya 1773 – 1829 cahaya bersifat
terdiri daripada gelombang melalui
zarah melalui eksperimen
eksperimen dwicelah cahaya.
pembiasan Demonstrates light
cahaya. has wave properties
Concluded that light by double slits
consists of particles experiment.
by refraction
experiment. Classical theory Teori klasik
J. J. Thomson Menemui elektron John Dalton Semua benda
(1856 – 1940) yang bercas 1766 – 1844 terdiri daripada
negatif. zarah kecil iaitu
Discovered the atom.
negatively-charged All things are made
electrons. up of the smallest
particles which is
atom.
Max Planck Memperkenalkan Albert Einstein Cahaya terdiri
(1858 - 1947) kuanta tenaga/ (1879 - 1955) daripada foton.
diskrit yang Kesan fotoelektrik
berkadar terus dijelaskan melalui
dengan frekuensi teori foton Einstein.
getaran elektron. Light consists of
Introduced quantum photon. Photoelectric
energy that directly effect is explained
proportional to by Einstein’s photon
the frequency of theory.
radiation vibration. Quantum theory Teori kuantum
Louis de Broglie Memperkenalkan Niels Bohr Elektron
(1892 - 1987) sifat kedualan (1885 - 1962) membebaskan atau
gelombang-zarah. menyerap tenaga
Konsep ini dikenali apabila beralih dari
sebagai hipotesis satu orbit ke orbit
de Broglie. yang lain dalam
The nature of the atom.
wave-particle. This Electrons release or
concept is known absorb energy by
as the de Broglie moving from one orbit
hypothesis. to another in an atom.
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