Used in conjunction with the BJU Press Biology Lab Manual, The Logos Science Biology Addendum and Lab Kit contains information, equipment, and supplies your student needs to fully experience the world of biology.

Aspheric lensesadvantages disadvantages

Aspherical lenses are designed to have a much shorter focal length than is possible with regular spherical lenses. They are also corrected for spherical and coma aberrations. Ideally suited for low f-number and high throughput application, condenser quality aspheres are primarily used in high efficiency illumination systems.