Abstract:
An apparatus with a vessel (20), a first induction source (30), and a second induction source (32) in the melt zone (12). The first induction source (30) is used to melt the material received in the vessel (20). The second induction source (32) is used to contain the material in a meltable form within the vessel (20) during melting. The coils (26) of each of the first and second induction sources (30, 32) can be arranged such that they intertwine in an alternate fashion or that they are in sets in a series. The coils (26) of the sources (30, 32) can also sequentially receive power such that the material is moved through the ejection path after melting and into an adjacent mold. The vessel (20) can be positioned along a horizontal axis (X). The apparatus can be used to melt and mold amorphous alloys; for example.
Abstract:
Different users of head-mountable devices have different needs for vision correction. A system can be provided to determine the corrective lenses that are most appropriate for a given user. A dispenser can contain a variety of different lenses that provide different types of vision correction. The dispenser can provide an appropriate one of the lenses, and a user can use the lens with a head-mountable device during a sampling session. During the sampling session, the user can verify that the lens is satisfactory.