Cell Phone Microscope
A ~ 1mm diameter glass sphere works as a lens with focal length ~ 1 mm and projects an image from infinity into a cell phone camera with surprising results.
![[ATTACH]](/garage/Cell%20phone%20microscope?action=AttachFile&do=upload_form&ticket=0067f145d5.6dfadf6c82f294e9f03b2c26f1d9ac0536f26f82&target=CellPhoneMicroscope8.jpg "[ATTACH]"){kind=small}
![[ATTACH]](/garage/Cell%20phone%20microscope?action=AttachFile&do=upload_form&ticket=0067f145d5.6dfadf6c82f294e9f03b2c26f1d9ac0536f26f82&target=CellPhoneMicroscope9.jpg "[ATTACH]"){kind=small}
A ~ 1mm diameter glass sphere works as a lens with focal length ~ 1 mm and projects an image from infinity into a cell phone camera with surprising results.