add more waves notes, chem h20 notes

diff --git a/physics/waves.md b/physics/waves.md
index 0b085c54916e158887f49f38f35fb53fdad2e629..8f94d828e04e1372b50051efee32206ea855d83c 100644 (file)
--- a/physics/waves.md
+++ b/physics/waves.md
@@ -90,6 +90,8 @@ $f = {nv \div 4l}\quad$ (frequency for $n_{th}$ harmonic at length $l$ and speed
 
 ## Light
 
+
+
 Newton - light as a particle
 - light speeds up as it travels through a solid medium