Examlex
In Microsoft Access,a user has to define the relationships between fields before creating the tables.
Electron
A subatomic particle with a negative charge, found in the electron clouds surrounding the nucleus of an atom.
Line Spectra
Line spectra are the emission or absorption of light at specific wavelengths by atoms or molecules transitioning between energy levels, resulting in distinct lines characteristic of the substance.
Quantized Energy Levels
The concept in quantum mechanics that energy levels in atoms and molecules are discrete, not continuous.
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