From 7ab611eb44e10ea6eba9643b1c70468cb69d195b Mon Sep 17 00:00:00 2001
From: DL6ER <derigs@ph1.uni-koeln.de>
Date: Mon, 19 Dec 2016 22:57:23 +0100
Subject: [PATCH] Added comment about absolute zero

---
 header.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/header.php b/header.php
index c4aea030..56f970dd 100644
--- a/header.php
+++ b/header.php
@@ -40,6 +40,8 @@
     }
     else
     {
+        // Nothing can be colder than -273.15 degree Celsius (= 0 Kelvin)
+        // This is the minimum temperature possible (AKA absolute zero)
         $celsius = -273.16;
     }