Electronic Transitions and Spectroscopy
The term “electronic” connotes electron, and the term “transition” implies transformation. In a molecule, the electrons move from a lower to a higher energy state due to excitation. The two energy states, the ground state and the excited state are the lowest and the highest energy states, respectively. An energy change is observed with this transition, which depicts the various data related to the molecule.
Photoelectron Spectroscopy
Photoelectron spectroscopy (PES) is a part of experimental chemistry. It is a technique used in laboratories that involves projecting intense beams of radiation on a sample element. In response, the element ejects electrons for which the relative energies are measured.
What is the role (one) of pH in the colour development in meat during heat treatment
In case of fresh meat, not in contact with air, purple red colour of the meat is due to myoglobin but when meat is exposed to air, specially oxygen, another pigment, oxymyoglobin, is formed from the myoglobin and the colour of the meat changes to cherry-red colour.
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