Physical Constants, including: Speed Of Light, Gravitational Constant, Fine-structure Constant, Boltzmann Constant, Dimensionless Physical Constant, ... Constant, Proton-to-electron Mass Ratio

Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge. This particular book contains chapters focused on Physical constants, Fundamental constants, Dimensionless numbers, Mathematical constants, Pi, Pi algorithms, Pi software, Zero, Root-finding algorithms, Zero (linguistics), and One.

More info: A physical constant is a physical quantity that is generally believed to be both universal in nature and constant in time. It can be contrasted with a mathematical constant, which is a fixed numerical value but does not directly involve any physical measurement.