Move PHYA4 docs into a seperate folder to start PHYA5 notes
Add lenses notes
Add ray diagram notes
Add lens equation notes
Add simple refracting telescope notes
Add image brightness notes
Angluar_magnification notes
Run aspell on Environmental Impact topic files
Add flashcards for BY4 definitions
Add D1 flashcards
Add Mechanics, Materials & Waves PHYA2 flashcards
Fix issue where PHYA4 cards had biology notes in them
Add astrophysics flashcards
Add PHYA2 Definitions flashcards
Add BY5 Definitions flashcards
Add flashcards for BY5
Add notes on cassegrain telescope
Add telescope notes
Add diffraction notes
Add notes on resolving power