Appendix B. Variable List
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# Appendix B. Variable List

## Basic Constants

Table B.1. Variables: Basic Constants

Title | Names | Value
--- | --- | ---
Apery's Constant | apery | zeta(3)
Archimedes' Constant (pi) | π / pi | 3.1415927 (variable precision)
Base of Natural Logarithms (e) | e | 2.7182818 (variable precision)
Catalan's Constant | catalan | 0.91596559 (variable precision)
Euler's Constant | γ / euler | 0.57721566 (variable precision)
Golden Ratio | golden / φ | (1+sqrt(5))/2
Omega Constant | omega | lambertw(1)
Pythagoras' Constant (sqrt 2) | pythagoras | sqrt(2)

## Date & Time

Table B.2. Variables: Date & Time

Title | Names | Value
--- | --- | ---
Now (date and time) | now | "2018-11-06T19:42:58"
Today | today | "2018-11-06"
Tomorrow | tomorrow | "2018-11-07"
Yesterday | yesterday | "2018-11-05"

## Large Numbers

Table B.3. Variables: Large Numbers

Title | Names | Value
--- | --- | ---
Billion | billion | 1E9
Centillion | centillion | 1E303
Decillion | decillion | 1E33
Duodecillion | duodecillion | 1E39
Googol | googol | 10^100
Googolplex | googolplex | 10^(10^100)
Hundred | hundred | 1E2
Million | million | 1E6
Nonillion | nonillion | 1E30
Novemdecillion | novemdecillion | 1E60
Octillion | octillion | 1E27
Octodecillion | octodecillion | 1E57
Quadrillion | quadrillion | 1E15
Quattuordecillion | quattuordecillion | 1E45
Quindecillion | quindecillion | 1E48
Quintillion | quintillion | 1E18
Septendecillion | septendecillion | 1E54
Septillion | septillion | 1E24
Sexdecillion | sexdecillion | 1E51
Sextillion | sextillion | 1E21
Thousand | thousand | 1E3
Tredecillion | tredecillion | 1E42
Trillion | trillion | 1E12
Undecillion | undecillion | 1E36
Vigintillion | vigintillion | 1E63

## Physical Constants

### Atomic and Nuclear Constants

Table B.4. Variables: Atomic and Nuclear Constants

Title | Names | Value
--- | --- | ---
Alpha Particle Mass | alpha_particle_mass / m_α | 6.644657230E-24±8.2E-32 g (approximate)
Bohr Radius | bohr_radius / a_0 | 0.52917721067E-10±1.2E-20 m (approximate)
Classical Electron Radius | classical_electron_radius / r_e | 2.8179403227E-15±1.9E-24 m (approximate)
Compton Wavelength | compton_wavelength / λ_C | 2.4263102367E-12±1.1E-21 m (approximate)
Electron Mass | electron_mass / m_e | 9.10938356E-28±1.1E-35 g (approximate)
Helion Mass | helion_mass / m_h | 5.006412700E-24±6.2E-32 g (approximate)
Neutron Mass | neutron_mass / m_n | 1.674927471E-24±2.1E-32 g (approximate)
Proton Mass | proton_mass / m_p | 1.672621898E-24±2.1E-32 g (approximate)
Rydberg Constant | rydberg / R_∞ | 10973731.568508±0.000065 m^(-1) (approximate)
Tau Mass | tau_mass / m_τ | 3.16747E-24±2.9E-28 g (approximate)

### Electromagnetic Constants

Table B.5. Variables: Electromagnetic Constants

Title | Names | Value
--- | --- | ---
Bohr Magneton | bohr_magneton / μ_B | 927.4009994E-26±5.7E-32 J*T^(-1) (approximate)
Conductance Quantum | conductance_quantum / G_0 | 7.7480917310E-5±1.8E-14 S (approximate)
Elementary Charge | elementary_charge / e_charge | 1.6021766208E-19±9.8E-28 C (approximate)
Josephson Constant | josephson / K_J | 483597.8525E9±3.0E6 Hz*V^(-1) (approximate)
Magnetic Flux Quantum | magnetic_flux_quantum / Φ_0 | 2.067833831E-15±1.3E-23 Wb (approximate)
Nuclear Magneton | nuclear_magneton / μ_N | 5.050783699E-27±3.1E-35 J*T^(-1) (approximate)
von Klitzing Constant | klitzing / R_K | 25812.8074555±0.0000059 ohm (approximate)

### Physico-Chemical Constants

Table B.6. Variables: Physico-Chemical Constants

Title | Names | Value
--- | --- | ---
Atomic Mass Constant | atomic_mass / m_u | 1.660539040E-24±2.0E-32 g (approximate)
Avogadro Constant | avogadro / N_A | 6.022140857E23±7.4E15 mol^(-1) (approximate)
Boltzmann Constant | boltzmann / k_B | 1.38064852E-23±7.9E-30 J*K^(-1) (approximate)
Faraday Constant | faraday | 96485.33289±0.00059 C*mol^(-1) (approximate)
First Radiation Constant | first_radiation / c_1 | 3.741771790E-16±4.6E-24 W*m^2 (approximate)
Ideal Gas Constant | ideal_gas | 8.3144598±0.0000048 J*K^(-1)*mol^(-1) (approximate)
Second Radiation Constant | second_radiation / c_2 | 1.43877736E-2±8.3E-9 m*K (approximate)

### Universal Constants

Table B.7. Variables: Universal Constants

Title | Names | Value
--- | --- | ---
Characteristic Impedance of Vacuum | characteristic_impedance / Z_0 | 4E-7*pi*299792458 ohm
Electric Constant (Permittivity of Free Space) | electric_constant / ε_0 / vacuum_permittivity | 1/(4E-7*pi*299792458^2) F*m^(-1)
Magnetic Constant (Permeability of Free Space) | magnetic_constant / μ_0 / vacuum_permeability | 4E-7*pi N*A^(-2)
Newtonian Constant of Gravitation | newtonian_constant / G | 6.67408E-11±3.1E-15 m^3*kg^(-1)*s^(-2) (approximate)
Planck Constant | planck / ℎ | 6.626070040E-34±8.1E-42 J*s (approximate)
Planck Constant over 2 pi | planck2pi / ℏ | planck/(2*pi)
Planck Length | planck_length / l_P | 1.616229E-35±3.8E-40 m (approximate)
Planck Mass | planck_mass / m_P | 2.176470E-5±5.1E-10 g (approximate)
Planck Temperature | planck_temperature / T_P | 1.416808E32±3.3E27 K (approximate)
Planck Time | planck_time / t_P | 5.39116E-44±1.3E-48 s (approximate)
Speed of Light in Vacuum | c / speed_of_light | 299792458 m*s^(-1)

## Small Numbers

Table B.8. Variables: Small Numbers

Title | Names | Value
--- | --- | ---
Per Mille | permille / ‰ | 0.001
Per Myriad | permyriad / ‱ | 0.0001
Percent | % / percent | 0.01

## Special Numbers

Table B.9. Variables: Special Numbers

Title | Names | Value
--- | --- | ---
False | false / no | 0
Imaginary i (sqrt -1) | i | i
Negative Infinity | minus_infinity | -infinity
Positive Infinity | ∞ / plus_infinity / infinity | +infinity
Precision | precision | current precision
True | true / yes | 1
Undefined | undefined | undefined

## Temporary

Table B.10. Variables: Temporary

Title | Names | Value
--- | --- | ---
Answer 2 | ans2 | a previous result
Answer 3 | ans3 | a previous result
Answer 4 | ans4 | a previous result
Answer 5 | ans5 | a previous result
Last Answer | ans / answer / ans1 | a previous result

## Unknowns

Table B.11. Variables: Unknowns

Title | Names | Value
--- | --- | ---
n (integer) | n | integer
x | x | default assumptions
y | y | default assumptions
z | z | default assumptions

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