From e28d2a982d0c65fcad9a2d2a4c20d06a9848fa8f Mon Sep 17 00:00:00 2001
From: Prefetch
Date: Tue, 5 Oct 2021 19:31:12 +0200
Subject: Expand knowledge base

---
 content/know/concept/rutherford-scattering/index.pdc | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'content/know/concept/rutherford-scattering')

diff --git a/content/know/concept/rutherford-scattering/index.pdc b/content/know/concept/rutherford-scattering/index.pdc
index 481e4d1..81bb133 100644
--- a/content/know/concept/rutherford-scattering/index.pdc
+++ b/content/know/concept/rutherford-scattering/index.pdc
@@ -4,6 +4,7 @@ firstLetter: "R"
 publishDate: 2021-10-02
 categories:
 - Physics
+- Plasma physics
 
 date: 2021-09-23T16:22:07+02:00
 draft: false
@@ -231,6 +232,10 @@ $$\begin{aligned}
     }
 \end{aligned}$$
 
+In fact, this formula is also valid if $q_1$ and $q_2$ have opposite signs;
+in that case particle 2 is simply located on the other side
+of particle 1's trajectory.
+
 
 
 ## References
-- 
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