Question Number 16134 by Tinkutara last updated on 18/Jun/17
$$\mathrm{The}\:\mathrm{mathematical}\:\mathrm{expression}\:\mathrm{which} \\ $$$$\mathrm{is}\:\mathrm{true}\:\mathrm{for}\:\mathrm{the}\:\mathrm{uncertainty}\:\mathrm{principle}\:\mathrm{is} \\ $$$$\left(\mathrm{1}\right)\:\left(\Delta{x}\right)\:\left(\Delta{v}\right)\:\geqslant\:\frac{\mathrm{h}}{\mathrm{4}\pi} \\ $$$$\left(\mathrm{2}\right)\:\left(\Delta\mathrm{E}\right)\:\left(\Delta{x}\right)\:\geqslant\:\frac{\mathrm{h}}{\mathrm{4}\pi} \\ $$$$\left(\mathrm{3}\right)\:\left(\Delta\theta\right)\:\left(\Delta\phi\right)\:\geqslant\:\frac{\mathrm{h}}{\mathrm{4}\pi} \\ $$$$\left(\mathrm{4}\right)\:\left(\Delta{x}\right)\:\left(\Delta\mathrm{m}\right)\:\geqslant\:\frac{\mathrm{h}}{\mathrm{4}\pi} \\ $$