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.
Dissecting microscopes are used for viewing live specimens or three-dimensional objects too large or thick to be accommodated by compound microscopes. Specimens can be physically manipulated under magnification, since they do not have to be mounted onto a slide for observation under a dissecting microscope.