= Dimensionless constants
{wiki=Category:Dimensionless_constants}
Dimensionless constants are quantities in physics and mathematics that do not have any associated physical units. They are pure numbers that describe certain ratios or relationships between different physical quantities, allowing them to be compared or related without the need for dimensional measurements. Examples of dimensionless constants include: 1. **The fine-structure constant (\\(\\alpha\\))**: This constant characterizes the strength of the electromagnetic interaction between elementary charged particles. Its approximate value is \\(1/137\\).
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