# Table of Physical Constants

A table of physical constants is a compilation of the most important and useful physical constants. These constants include the speed of light, the Planck constant, the electron mass, and the Avogadro constant. The values of these constants are essential for performing many calculations in physics and engineering. The table of physical constants is a valuable tool for anyone working with physics or engineering.

### What are examples of physical constants?

The speed of light in vacuum, denoted by c, is a physical constant. It is the speed at which light propagates in vacuum, and it is equal to 299,792,458 metres per second.

The Planck constant, denoted by h, is a physical constant that relates the energy of a photon to its frequency. It is equal to 6.62607015×10−34 joule seconds.

The gravitational constant, denoted by G, is a physical constant that governs the strength of the gravitational force. It is equal to 6.67430×10−11 m3⋅kg−1⋅s−2.

The Avogadro constant, denoted by N A , is a physical constant that relates the number of particles in a mole of a substance to the amount of substance. It is equal to 6.022140857×1023 particles per mole. What are the 7 constants? The 7 constants are the speed of light in vacuum, the Planck constant, the elementary charge, the Boltzmann constant, the Avogadro constant, the molar gas constant, and the gravitational constant. These are all physical constants with values that are considered to be fundamental in physics.

How many physics constants are there? There is no definitive answer to this question as it depends on how you define a "physics constant". For example, you could consider the speed of light in a vacuum to be a physics constant, or you could consider the Planck constant to be a physics constant. In general, however, it is safe to say that there are at least dozens of physics constants, if not more. What are the 6 universal constants? The 6 universal constants are the speed of light in a vacuum, the Planck constant, the gravitational constant, the Boltzmann constant, the Avogadro constant, and the Coulomb constant. These constants are all defined by international agreement and are used in a variety of scientific disciplines. What is value of Rydberg constant? Rydberg constant, symbol R∞, is the infinite distance between the levels in a hydrogen atom in its ground state. Its value is Rydberg constant = 1.097 373 156 × 10−7 m−1.