Abstract: The disclosure provides a method (200) for determining one or more features associated with an internal structure of a gemstone, the gemstone being at least partially transmissive to electromagnetic radiation. The method comprises directing electro-magnetic radiation towards the gemstone using a source of incident electromagnetic radiation; in response to directing electromagnetic radiation, detecting electromagnetic radiation using an optical detecting means, including detecting electromagnetic radiation following an interaction between the gemstone and the incident electromagnetic radiation; and processing the detected electromagnetic radiation, wherein the processing accounts for a determination of an external surface geometry of the gemstone and for refraction and reflection effects due to the external surface geometry of the gemstone, and obtains information indicative of the one or more features associated with the internal structure of the gemstone.

Abstract: Systems and methods for displaying estimated relevance indicators for result sets of documents and for displaying query visualizations are disclosed. A method includes receiving a search query including a plurality of query terms. The method further includes searching a database using the search query to identify the result set of documents and calculating an estimated relevance score for the result set of documents. The estimated relevance score is indicative of a degree to which the result set of documents are relevant to the search query. The method further includes providing for display the estimated relevance indicator based on the estimated relevance score. The estimated relevance indicator provides a visual indication of the degree to which the result set of documents are relevant to the search query. Query visualizations including a plurality of nodes and a plurality of connectors are also disclosed.

Abstract: Fluids such as saline solution that are disposed in containers such as contact lens packages can be detected by directing ultrasonic energy at the container and receiving a return reflection of the ultrasonic energy. The ultrasonic energy and the return reflection can propagate through a shroud that substantially isolates the ultrasonic energy and the return reflection from air currents.