When Bilhah conceives two sons, Leah takes up the same idea and presents Zilpah to wife to Jacob. Leah names the two sons of Zilpah and is directly involved in their upbringing.Pirke De-Rabbi Eliezer, xxxvi.). Zilpah also figures in the competition between Jacob's wives to bear him sons. Leah stops conceiving after the birth of her fourth son, at which point Rachel, who had not yet borne children, offers her handmaid, Bilhah, to wife to Jacob so that she can have children through her.
What is a Confocal Microscope? A confocal microscope performs the same function as any other microscope. Itâs used to view any objects or structures that are too small for the naked eye to see. Unlike the traditional light microscope, however, a confocal microscope slices thin, clean optical sections of a given specimen using either fluorescence or reflection.
Typically, a compound microscope is used for viewing samples at high magnification (40 - 1000x), which is achieved by the combined effect of two sets of lenses: the ocular lens (in the eyepiece) and the objective lenses (close to the sample).ight is passed through the sample (called transmitted light illumination). Larger objects need to be sliced to allow this to happen efficiently. Compound microscopes usually include exchangeable objective lenses with different magnifications (e.g 4x, 10x, 40x and 60x), mounted on a turret, to adjust the magnification.