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authorbnewbold <bnewbold@robocracy.org>2010-01-24 10:12:18 +0000
committerUser <bnewbold@daemon.robocracy.org>2010-01-24 10:12:18 +0000
commitb234b981acb135ed00a7ecf444dde6fe33d9f0f3 (patch)
treea4b4b065de0fcb7ecd7d0a24ff143fdd591a0912
parent33b16985f884797cfcfd65979d848ee07776d3c6 (diff)
downloadknowledge-b234b981acb135ed00a7ecf444dde6fe33d9f0f3.tar.gz
knowledge-b234b981acb135ed00a7ecf444dde6fe33d9f0f3.zip
fixes
-rw-r--r--physics/units.page13
1 files changed, 3 insertions, 10 deletions
diff --git a/physics/units.page b/physics/units.page
index bfc78bc..f6b0d68 100644
--- a/physics/units.page
+++ b/physics/units.page
@@ -1,10 +1,3 @@
----
-format: rst
-categories: physics
-toc: no
-...
-
-======================
Units
======================
@@ -30,7 +23,7 @@ of light (c) and Plank's constant ($\hbar$); the gravitational constant
(G) is a possibility for the third constant/unit, but energy (in
electron-volts: eV) is often used instead because it gives more useful
relations and because there is no accepted theory of quantum gravity to unite
-these three constants. See _`Plank Units` for more on using G as a unit.
+these three constants. See Plank Units for more on using G as a unit.
Working with natural units simplifies physical relations and equations because
many conversion factors drop out.
@@ -39,7 +32,7 @@ Given the relations between cgs units (gm, cm, sec) and natural units (c,
$\hbar$ , eV), we can find the natural units of an arbitrary quantity
$[Q]=[gm]^{a}[cm]^{b}[sec]^{c}=[c]^{\alpha}[\hbar]^{\beta}[eV]^{\gamma}$:
-$$(\alpha,\beta,\gamma)=\left(\begin{array}{ccc} -2 & 1 & 0\\ 0 & 1 & 1\\ 1 & -1 & -1\end{array}\right)\left(\begin{array}{c} a\\ b\\ c\end{array}\right)=(-2a+b,b+c,a-b-c)$$
+$$(\alpha,\beta,\gamma)=\left(\begin{array}{ccc} -2 & 1 & 0\\ 0 & 1 & 1\\ 1 & -1 & -1\end{array}\right) \left(\begin{array}{c} a\\ b\\ c\end{array}\right)=(-2a+b,b+c,a-b-c)$$
or in reverse:
@@ -47,7 +40,7 @@ $$(a,b,c)=\left(\begin{array}{ccc} 0 & 1 & 1\\ 1 & 2 & 2\\ -1 & -1 & -2\end{arra
Plank Units
----------------
-Plank units (defined by Plank soon after defining his constant $\hbar$) are a version of _`Natural Units` using the gravitational constant G as the the
+Plank units (defined by Plank soon after defining his constant $\hbar$) are a version of Natural Units using the gravitational constant G as the the
third unit (instead of the common measure of energy). When converted back into
mass-length-time units we get three quantities which define the "Plank Scale",
which may provide estimation of the domain where quantum gravity effects become