MathPhysicalConstants

MathPhysicalConstants is a Julia package which has the values of a range of mathematical and physical constants updated with most recent available dataset from BIPM in 2018. Currently MKS and CGS units and International System of Units SI are supported.

Installation

The package can be installed directly from its github repository:

Pkg.clone("https://github.com/LaGuer/MathPhysicalConstants.jl")

Usage

Usage is pretty straightforward. Start off by loading the package.

julia> using MathPhysicalConstants

Query and retrieve the Planck Constant using the most updated International System of Units (SI)

julia> MathPhysicalConstants.SI.PlanckConstantH
6.62607015e-34

julia> big(MathPhysicalConstants.SI.PlanckConstantH)
6.62606895999999960651234296395253273824527450725424150396117674176417443843193e-34

Now let's have a look at ƛe ≡ ħ/m_e.c the reduced electron radius formula. Try it with BigFloat and Measurement

julia> big(MathPhysicalConstants.SI.PlanckConstantH)/(big(MathPhysicalConstants.SI.MassElectron)*big(MathPhysicalConstants.SI.SpeedOfLight))
2.42631027637202010003687587191357482878156204816578736228540160944126721996979e-12

Let's switch to Earth's gravitational acceleration in MKS units.

julia> PhysicalConstants.MKS.GravAccel
9.80665

Or in CGS units.

julia> MathPhysicalConstants.CGS.GravAccel
980.665

last but not least in International System of Units (SI)

julia> MathPhysicalConstants.SI.GravAccel
9.80665