\magnification=\magstep1

$$
\Delta f \thinspace \Delta t \quad = \quad {\rm constant}
$$


$$
\Delta f \thinspace \Delta t \quad \simeq \quad 2 \pi {\rm \ \ rad}
$$

$$
\Delta \omega \thinspace \Delta t \quad = \quad {\rm constant}
$$


$$
\Delta \omega \thinspace \Delta t \quad \simeq \quad 2 \pi {\rm \ \ rad}
$$

$$
\Delta E \thinspace \Delta t \quad \simeq \quad \hbar
$$

$$
\Delta x \thinspace \Delta p \quad \simeq \quad \hbar
$$


\bye
