${\displaystyle brilliance={\frac {photons}{second\cdot mrad^{2}\cdot mm^{2}\cdot 0.1\%BW}}}$

1

<-- ²⋅T⁻³ -->

Brilliance=photons/s/mm2/mrad2/0.1%BW

${\displaystyle R={\frac {\omega _{\rm {F}}-\omega _{\rm {C}}}{\omega _{\rm {L}}-\omega _{\rm {C}}}}}$

2

Equivalent equation: ${\displaystyle 2x+4=12}$ where ${\displaystyle x}$ represent my son's age

Following the same procedure (i.e. subtract ${\displaystyle b}$ from both sides, and then divide by ${\displaystyle a}$), the general solution is given by ${\displaystyle x={\frac {c-b}{a}}}$

ω = Angular frequency

Help:Displaying a formula

C₆H₁₂O₆

ω_FA

${\displaystyle (2+n)\omega _{\rm {a}}+n\omega _{\rm {s}}-2(1+n)\omega _{\rm {c}}=0}$

where n is the form factor of the planetary gear, defined by:

${\displaystyle n=Ns/Np}$

${\displaystyle x^{2}+y^{2}+z^{2}=1\,}$

1

Robert Willis (engineer): Principles of mechanism

Robert Willis: Principles of mechanism, Longmans, Green, London (1841 and 1870)