Confused and have questions? We’ve got answers. With Chegg Study, you can get step-by-step solutions to your questions from an expert in the field. If you rather get 1:1 study help, try 30 minutes of free online tutoring with Chegg Tutors.

Principal focus

From Biology-Online Dictionary
Jump to: navigation, search

principal focus

The real or virtual meeting point of rays passing into a lens parallel to its axis.