calculand - Formula collection, page 7
Unit converter
Quantity converter
Numeral systems
Calculate primes
Convert WARP
Volume formulas
Area formulas
Length formulas
Energy formulas
Force formulas
Pressure formulas
Power formulas
Velocity formulas
Heat formulas
Light formulas
Exponents, roots
Logarithm
Circular functions
Elements and materials
Formula collection
Unit list
Quantity list
Numeral systems list
Impressum/Contact
Length formulas
Bohr radius
Circle [π·d] Circle [2·π·r]
Circular arc [2·r·sin(α/2)] Circular arc [2·r·arcsin(s/(2·r))]
Circular chord
Circular sector
Circular segment
Compton effect
Compton radius
Compton wavelength
Dodecagon [12·√(2-√3)·R] Dodecagon [24·(2-√3)·r] Dodecagon [24·tan(180°/12)·r]
Electron radius [α²·aₒ] Electron radius [¼·e²/(π·εₒ·mₑ·c²)]
Ellipse
Event horizon
Hartree length
Hexagon
Larmor radius
Parallelogram
Planck length
Polygon [2·n·sin(180°/n)·R] Polygon [n·a]
Rectangle
Roll length
Schrödinger length
Schwarzschild radius
Square [4·a] Square [4·√2·R]
Stoney length
Trapezoid
Triangle [a+b+c] Triangle [8·R·cos(α/2)·cos(β/2)·cos(γ/2)] Triangle [4·a/sin(α)·cos(α/2)·cos(β/2)·cos(γ/2)]
Circle [π·d] Circle [2·π·r]
Circular arc [2·r·sin(α/2)] Circular arc [2·r·arcsin(s/(2·r))]
Circular chord
Circular sector
Circular segment
Compton effect
Compton radius
Compton wavelength
Dodecagon [12·√(2-√3)·R] Dodecagon [24·(2-√3)·r] Dodecagon [24·tan(180°/12)·r]
Electron radius [α²·aₒ] Electron radius [¼·e²/(π·εₒ·mₑ·c²)]
Ellipse
Event horizon
Hartree length
Hexagon
Larmor radius
Parallelogram
Planck length
Polygon [2·n·sin(180°/n)·R] Polygon [n·a]
Rectangle
Roll length
Schrödinger length
Schwarzschild radius
Square [4·a] Square [4·√2·R]
Stoney length
Trapezoid
Triangle [a+b+c] Triangle [8·R·cos(α/2)·cos(β/2)·cos(γ/2)] Triangle [4·a/sin(α)·cos(α/2)·cos(β/2)·cos(γ/2)]