Bio-plus Microscope
Product Code: KI-19-505
| EYEPIECES : High quality paired eyepieces 10 x (standard), 15 x (optional) extra wide field, high eye relief type. | ||||||||||||||||
| ||||||||||||||||
Objective : Choice of protocol, parcentered, Semi Plan (SP), Achromatic objectives in magnification range, 4x, 10 x and retractable 40 x and 100x oil.
| ||||||||||||||||
| Terms describing the optical features of the microscope | ||||||||||||||||
| Total Magnification : Total magnification of a microscope is the individual magnifying power of the objective multiplied by that of the eyepieces. Numerical Aperture (N.A) : One of the important factors determining the efficiency of condenser and objectives. it is represented by the formula. ( N.A. = n sin a ) Where n is the refractive index of a medium and ‘a’ is half of the maximum angle at which the light rays enter or leave the lens from or to a focussecd object point on the optical axis. Working Distance : Clearance between the from of the objective and the upper surface of the cover glass when the image of a specimen is brought into sharp focus. Generally, the higher the magnifying power of the objective, the shorter the working distance. Field Diameter : Diameter (MM) of the field of view which can be observed through the eyepiece. Indication 10x on the top of the eyepiece shows that eyepiece magnification is 10x |