# Quantum/Relativity cross-work

**URL:** <https://boards.straightdope.com/t/quantum-relativity-cross-work/182587>\
**Category:** Factual Questions\
**Created:** [June 18, 2003, 12:46am UTC](https://boards.straightdope.com/t/quantum-relativity-cross-work/182587 "2003-06-18T00:46:53Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Enola\_Straight](https://avatars.discourse-cdn.com/v4/letter/e/dec6dc/32.png) [@Enola\_Straight](https://boards.straightdope.com/u/Enola_Straight)\
**Post date:** [June 18, 2003, 12:46am UTC](https://boards.straightdope.com/t/quantum-relativity-cross-work/182587/1 "2003-06-18T00:46:53Z")

</div>

Is there anything in the Theory of Relativity which can describe Planck’s constant, Heisenberg’s Uncertainty Principle, charge, or spin?  
Conversley, is there anything in Quantum Mechanics which describes space, time, or mass?

---

<div class="post-metadata">

**Author:** ![bonzer](https://avatars.discourse-cdn.com/v4/letter/b/45deac/32.png) [@bonzer](https://boards.straightdope.com/u/bonzer)\
**Post date:** [June 18, 2003, 1:23am UTC](https://boards.straightdope.com/t/quantum-relativity-cross-work/182587/2 "2003-06-18T01:23:00Z")

</div>

Very broadly, nope to both. (The qualification is that QM does have something to say about space, time and mass. But nothing as startling as relativity does.)

On the other hand, quantum field theory nicely encompasses **all** these topics.

Just don’t mention gravity …

---

<div class="post-metadata">

**Author:** ![bonzer](https://avatars.discourse-cdn.com/v4/letter/b/45deac/32.png) [@bonzer](https://boards.straightdope.com/u/bonzer)\
**Post date:** [June 18, 2003, 1:25am UTC](https://boards.straightdope.com/t/quantum-relativity-cross-work/182587/3 "2003-06-18T01:25:45Z")

</div>

Except, of course, even that’s encompassed in the likes of string theory.