9.4. Glossary of Symbols#
In this glossary, key symbols and notation are briefly defined.
Symbol |
Definition |
|---|---|
\(\sigma\) |
standard deviation of a population |
\(\sigma^2\) |
variance of a population |
\(\sigma\) |
stress |
\(\sigma_{y}\) |
yield strength |
\(\sigma_{UTS}\) |
ultimate strength / tensile strength |
\(\mu\) |
mean of a population |
\(\bar{x}\) |
mean of a sample |
\(s\) |
standard deviation of sample |
\(s^2\) |
variance of sample |
\(^{\circ}C\) |
degrees celsius |
\(T\) |
temperature |
K |
temperature in Kelvin |
\(\alpha\) |
proportional to |
\(\alpha\) |
angle |
\(\Delta\) |
change in quantity |
\(\Sigma\) |
summation notation |
\(g\) |
acceleration due to gravity |
\(m\) |
mass |
\(n\) |
number of values in a sample |
\(N\) |
number of values in a population |
\(t\) |
time |
\(L\) |
length |
\(A\) |
cross-sectional area |
\(\delta\) |
extension/compression or change in length |
\(E\) |
elastic modulus |
\(\epsilon\) |
strain |
\(\vec{F}\) |
force |
\(P\) |
load / internal force |
\(FS\) |
factor of safety |
\(W\) |
weight |
\(I\) |
current |
\(V\) |
voltage |
\(R\) |
resistance |
\(P\) |
power |
sig figs |
significant figures |
\(z\) |
z-score |
\(\vec{D}\) |
displacement |
\(\hat{u}\) |
unit vector |
+CCW |
positive counter-clockwise |
+CW |
positive clockwise |
\(T\) |
tension |
\(\theta\) |
angle |
\(\phi\) |
angle |
\(\varphi\) |
angle |