FredericBernard
Removed category physics
17:08
-21
(username removed)
Added some maths
14:08
+1,208
Categorise
18:05
+20
DavidB4-bot
clean up & uniformity
11:40
-7
Fnarrow
dead end page links
03:38
+61
CPalmer
cat
11:05
+21
AugustO
Created page with "'''Diffraction''' occurs ''“when waves pass through small openings, around obstacles, or past sharp edges. When an opaque object is placed between a point source of light..."
16:27
+562