Question

What is the contribution made to the development of the microscope by Charles  Spencer?

A. first to document careful observations of different cell types
 B.identifying the first cell
C. used mathematics to improve the focus of the lens
 D. created the  first microscope
E. discovered the electron microscope
 F. built microscopes capable of magnification of up to 1250 x using regular light

Answer 1

Charles built microscopes that were capable of magnification up to 1250 times using regular light, and up to 5000 times using a blue light source.

Answer 2

built microscopes capable of magnification of up to 1250 x using regular light