The quantum of length is the Planck length given by(adsbygoogle = window.adsbygoogle || []).push({});

[tex] \lambda_p = \sqrt{\frac{Gh}{c^3}} [/tex]

where G is the gravity constant. h is Planck's constant. c is the speed of light in vacuum.

There might be unknown fundamental energy and force whose ratio can also give the quantum length.

[tex] \lambda_p = \frac{E_0}{F_0} [/tex]

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# Can quantum length be derived not using gravity constant?

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