diff --git a/capacitive.md b/capacitive.md
index 26afe3d5f51b0a975c2de89f7de42d71f7a207ce..a2bfc931808ff40407a914de597d30e8c2811095 100644
--- a/capacitive.md
+++ b/capacitive.md
@@ -20,7 +20,7 @@ In short, these solutions seem cool, but complicated, and I need to take some mo
 
 It's good to try to get a grounding on what's really going on. To get the basics in order, I go [here](http://hyperphysics.phy-astr.gsu.edu/hbase/electric/pplate.html). 
 
-Capacitance is $'C = \frac{k * e * A}{d}'$ where $'k'$ is the relative permittivity of the material between the plates, $'e'$ is a constant making $'k * e = 1'$ in air, $'A'$ is the area of the plates and $'d'$ is the separation of those plates. 
+Capacitance is $`C = \frac{k * e * A}{d}`$ where $'k'$ is the relative permittivity of the material between the plates, $'e'$ is a constant making $'k * e = 1'$ in air, $'A'$ is the area of the plates and $'d'$ is the separation of those plates. 
 
 Some quick thoughts 
  - do static tx / rx pads. reference is metallic thing that moves between them, changing the permeattivity of space between them