From e43a2435717831e1bc60e8c14499d7380cb09afd Mon Sep 17 00:00:00 2001
From: Johannes Hofmann <Johannes.Hofmann@gmx.de>
Date: Wed, 28 May 2008 22:13:46 +0200
Subject: add note about refraction to README

---
 src/Panorama.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/Panorama.cxx b/src/Panorama.cxx
index a072fd0..aa358ec 100644
--- a/src/Panorama.cxx
+++ b/src/Panorama.cxx
@@ -433,7 +433,7 @@ Panorama::alpha(const Hill *m) {
 
 double
 Panorama::refraction(const Hill *m) {
-	double a, b, c, alpha = 6.5, T0 = 0.0;
+	double a, b, c, alpha = 6.5, T0 = 10.0;
 
 	a = 2.9e-4 * exp (-view_height / 10000.0) / (1.0 + 2.9 * T0 / 760.0);
 	b = 2.9 * alpha / (760.0 * (1.0 + 2.9 * T0 / 760.0));
-- 
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