Copernicium Is a Strange Element Indeed
&gt; When it comes to gravity, the two theories [quantum theory and classical theory] are completely incompatible, and there is no way to escape the conclusion that one or both of them must be seriously incomplete or even flat-out wrong about something important. ...<p>Part of the problem lies with the lack of tools for studying gravity through the perspective of quantum mechanics due to the scale involved:<p>&gt; One of the difficulties of formulating a quantum gravity theory is that quantum gravitational effects only appear at length scales near the Planck scale, around 10−35 meter, a scale far smaller, and equivalently far larger in energy, than those currently accessible by high energy particle accelerators. Therefore, physicists lack experimental data which could distinguish between the competing theories which have been proposed[7][8] and thus thought experiment approaches are suggested as a testing tool for these theories.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Quantum_gravity" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Quantum_gravity</a><p>Edit: there&#x27;s an interesting complement to the linked article which talks in more detail about the relativistic basis for why mercury is liquid and gold is yellow:<p><a href="https:&#x2F;&#x2F;blogs.scientificamerican.com&#x2F;the-curious-wavefunction&#x2F;what-does-mercury-being-liquid-at-room-temperature-have-to-do-with-einsteins-theory-of-relativity&#x2F;" rel="nofollow">https:&#x2F;&#x2F;blogs.scientificamerican.com&#x2F;the-curious-wavefunctio...</a>