1 files changed, 1 insertions, 0 deletions
diff --git a/TODO b/TODO
index 2ccd95d..a3ad150 100644
--- a/TODO
+++ b/TODO
@@ -29,3 +29,4 @@
   other rings
 - add rayleigh scattering to likelihood function
 - add muon shower PDF? delta rays?
+- calculate path length through acrylic?