IUPAC Gold Book - Quantities

Quantities

A B C D E F G H IJK L M N O P Q R S TUVWXYZ

quantity	symbol	referenced in	equation
wavelength, $λ$	$Math - mfenced$	absorbed (spectral) photon flux density	$q p , λ 0 1 − 10 − A λ V$
		absorbed (spectral) photon flux density	$q n , p , λ 0 1 − 10 − A λ V$
		absorbed (spectral) photon flux density	$A λ$
		absorbed (spectral) photon flux density	$λ$
		absorbed (spectral) radiant power density	$P λ 0 1 − 10 − A λ V$
		absorption spectrum	$λ$
		absorption spectrum	$1 λ$
		actinic flux $S λ$	$E λ = ∫ θ ∫ φ L λ θ φ cos ⁡ θ sin ⁡ θ ⁢ d θ ⁢ d φ$
		actinic flux $S λ$	$h c λ$
		brightness of a laser dye	$ɛ λ$
		brightness of a laser dye	$Φ f ɛ λ$
		conversion spectrum	$λ$
		Dimroth–Reichardt $E T$ parameter	$E T = 2.859 × 10 −3 ν = 2.859 × 10 4 λ −1$
		Dimroth–Reichardt $E T$ parameter	$λ$
		dispersion (for spectroscopic instruments)	$Dispersion of a material = d n d λ$
		dispersion (for spectroscopic instruments)	$λ$
		dispersion (for spectroscopic instruments)	$angular dispersion = d Φ d λ$
		dispersion (for spectroscopic instruments)	$linear dispersion = d x d λ$
		dispersion (for spectroscopic instruments)	$d λ d x$
		excimer lamp	$λ = 354 nm$
		excimer lamp	$λ = 126 nm$
		isosbestic point	$A λ l −1 = ∑ i = 1 n ɛ i λ c i$
		isosbestic point	$A λ$
		isosbestic point	$λ$
		Mie scattering	$r ≪ λ$
		Mie scattering	$r ≫ λ$
		Mie scattering	$r ≈ λ$
		molar absorption coefficient, $ɛ$	$ɛ λ = 1 c l lg ( P λ 0 P λ ) = A λ c l$
		molar absorption coefficient, $ɛ$	$P λ 0$
		molar absorption coefficient, $ɛ$	$P λ$
		molar absorption coefficient, $ɛ$	$ɛ λ$
		quantum yield, $Φ$	$Φ λ = number of events number of photons absorbed$
		quantum yield, $Φ$	$Φ λ = amount of reactant consumed or product formed amount of photons absorbed$
		quantum yield, $Φ$	$Φ λ = d x / d t q n , p 0 1 − 10 − A λ$
		quantum yield, $Φ$	$A λ$
		radiance, $L$	$L = ∫ λ L λ ⁢ d λ$
		radiant energy, $Q$	$Q = ∫ Q λ ⁢ d λ$
		radiant exitance, $M$	$M = ∫ λ M λ ⁢ d λ$
		radiant intensity, $I$	$I = ∫ λ I λ ⁢ d λ$
		radiative energy transfer	$a = 1 Φ D 0 ∫ λ I λ D λ 1 − 10 − ɛ A λ c A l ⁢ d λ$
		radiative energy transfer	$I λ D λ$
		radiative energy transfer	$ɛ A λ$
		radiative energy transfer	$Φ D 0 = ∫ λ I λ D λ ⁢ d λ$
		radiative energy transfer	$a = 2.3 Φ D 0 c A l ∫ λ I λ D λ ɛ A λ ⁢ d λ$
		radiometry	$h c λ$
		Rayleigh scattering	$λ −4$
		reflectance, $ρ$	$ρ λ = P λ refl P λ 0$
		reflectance, $ρ$	$ρ λ = ( n 1 − n 2 ) 2 ( n 1 + n 2 ) 2$
		solar conversion efficiency	$λ = 0$
		solar conversion efficiency	$λ = ∞$
		spectral sensitivity, $S λ$	$S λ$
		spectral sensitivity, $S λ$	$S ac λ = Φ λ ɛ λ obs = sensitivity or actinometric factor$
		spectral sensitivity, $S λ$	$Φ λ$
		spectral sensitivity, $S λ$	$λ obs$
		Z-value	$Z = 2.859 × 10 4 λ$
	$Math - math$	optical parametric oscillator	$λ p$
		optical parametric oscillator	$2 × λ p$
		optical parametric oscillator	$λ p = 355 nm$
	$Math - math$	optical parametric oscillator	$λ s$
	$Math - math$	optical parametric oscillator	$λ I$
	$Math - apply$	optical parametric oscillator	$λ i ≈ 3.15 μm$
		optical parametric oscillator	$λ i ≈ 870 nm$
wavenumber, $σ$ , $ν ˜$	$Math - math$	conversion spectrum	$σ$
		wavenumber, $σ$ , $ν ˜$	$σ$
	$Math - apply$	Dimroth–Reichardt $E T$ parameter	$E T = 2.859 × 10 −3 ν = 2.859 × 10 4 λ −1$
		Dimroth–Reichardt $E T$ parameter	$ν$
	$Math - math$	spectral fluence rate, $E λ , o$	$ν ˜$
weight, $G$	$Math - math$	weight, $G$	$G$
		weight, $G$	$G = m g$
work, $w$ , $W$	$Math - math$	internal energy, $U$	$w$
		internal energy, $U$	$Δ U = q + w$
		work, $w$ , $W$	$w = ∫ F · d r$
	$Math - math$	work, $w$ , $W$	$W$