Physical constants

Lightspeed in Vacuum c = 299792458 m/s: This Constant testifies how fast Light travels in evacuated space.
Absolute Zero Temperature T = -273.15 K: The absolute negative Temperature in Kelvin is already at Zero. That means -273.15 Celsius are 0 Kelvin, so there are no negative values for the Kelvin Scale
Universal Gas Constant R = 8314.5 J/kgK: The Universal Gas Constant R can be used for solving tasks in Thermodynamics like calculating an definite integral between two volumina filled with a certain type of gas that is not known directly.
Planck Force Quantum h = 4.13567 • 10^-15: The Planck Force Quantum describes the mininal Energy that has to be raised up to elevate an Electron twiddling around its core from one track to the next higher.
Electron Elementary Charge 1.602177 • 10^-19 As: The Elementary Charge of an Electron. We all know that Electrons are negatively charged so they are bound to certain tracks around the Core that is made up of Neutrons and Protons. Protons are positively charged and attract the Electrons so that they do not fall into the core but dont either free themselves.
Electron Mass m_e = 9.10939 • 10^-31 kg: Electron mass
Rydberg Frequency f = 3.28984195 • 10^15: Rydberg Frequency