Preferred Label : change of a quantity;
IUPAC definition : The increment of the value of a quantity Q with time. The change may be expressed
either infinitesimally at time t by the differential dQ or dQ(t), or in practice it
may be expressed by a finite increment over the time interval t1;t2, i.e. Q t 2- Q
t 1, which may be written Δ Q or Δ Q t 1 t 2 \[Δ Q Δ Q(t_{1};t_{2}) Q(t_{2})-
Q(t_{1})\] Examples are: mass change, Δ m; amount of substance change, Δ n; volume
change, ΔV; substance concentration change, Δ c.;
Origin ID : C00968;
See also
The increment of the value of a quantity Q with time. The change may be expressed
either infinitesimally at time t by the differential dQ or dQ(t), or in practice it
may be expressed by a finite increment over the time interval t1;t2, i.e. Q t 2- Q
t 1, which may be written Δ Q or Δ Q t 1 t 2 \[Δ Q Δ Q(t_{1};t_{2}) Q(t_{2})-
Q(t_{1})\] Examples are: mass change, Δ m; amount of substance change, Δ n; volume
change, ΔV; substance concentration change, Δ c.
