A computer-implemented method teaches a user to evaluate a gemstone, such as a cut diamond. The method includes providing a computer system connected to an apparatus capable of capturing an image of a gemstone. The computer system is arranged to process a received image of a gemstone to determine one or more optical properties of the gemstone. In one aspect, the method presents on a display of the computer system a series of pre-stored screens comprising a graphical representation how the cut of a gemstone affects its light handling ability, and a user interface screen. The user interface screen allows the user to control the operation of the apparatus to measure the one or more optical properties of a particular gemstone provided to the apparatus, to view an image of the gemstone measured, and to view representations of the measured one or more optical properties.

A computer-implemented method teaches a user to evaluate a gemstone, such as a cut diamond. The method includes providing a computer system connected to an apparatus capable of capturing an image of a gemstone. The computer system is arranged to process a received image of a gemstone to determine one or more optical properties of the gemstone. In one aspect, the method presents on a display of the computer system a series of pre-stored screens comprising a graphical representation how the cut of a gemstone affects its light handling ability, and a user interface screen. The user interface screen allows the user to control the operation of the apparatus to measure the one or more optical properties of a particular gemstone provided to the apparatus, to view an image of the gemstone measured, and to view representations of the measured one or more optical properties.

The invention provides a three-dimensional apparatus for problem solving, learning and presentation for modeling, teaching and illustrating exemplary problem solving or thinking. Some embodiments provide a puzzle-like form. Another preferred embodiment of the present invention provides for the building of a problem or topic or situation specific or custom learning or problem solving or investigatory or presentation aid. Embodiments of the invention may also incorporate or use electronic, digital, electro-mechanical, mechanical, electric or other devices, processors, controllers, or mechanisms, or input or output to or from such or similar elements, and wired or wireless or other networks or interfaces.

The invention provides a three-dimensional apparatus for problem solving, learning and presentation for modeling, teaching and illustrating exemplary problem solving or thinking. Some embodiments provide a puzzle-like form. Another preferred embodiment of the present invention provides for the building of a problem or topic or situation specific or custom learning or problem solving or investigatory or presentation aid. Embodiments of the invention may also incorporate or use electronic, digital, electro-mechanical, mechanical, electric or other devices, processors, controllers, or mechanisms, or input or output to or from such or similar elements, and wired or wireless or other networks or interfaces.

An integrated test device and method for filling karst cave deposition and tunnel intermittent water and mud inrush disasters. The device includes a mixing tank, water tank, water collection tank and plurality of depositing tanks, wherein mixing tank outlet is connected to one end of a pipe, the other end of the pipe extends to one end of the water tank, the plurality of depositing tanks are arranged underwater tank at intervals, the water collection tank is arranged at the water tank's other end, and a detachable baffle is arranged in the water tank and in front of each depositing tank. The deposition and consolidation of filling media and water and mud inrush can be simulated and observed through the setting and cooperation of the plurality of depositing tanks, different working conditions can be simulated by changing the flow rate, sample concentration, particle gradation, depositing height and displacement.

This invention involves a balance scale with a base, a balance arm support, a balance arm, a pointer, and a movable label plate containing descriptions. The balance arm has a tray on each end, where one tray holds an article representing mankind with sin, and the other tray holds an article representing the redemptive work of Jesus Christ. The articles on each tray are of equal or approximately equal weight. The scale rotates when the weight of the articles are added to or removed from the trays, and the scale rotation will determine which description the pointer will point to. This invention can be used as a Christian teaching aid showing the benefit of choosing to accept the death of Christ as payment in full for our sins, along with showing the consequence of our refusal to accept the death of Christ as payment for our sins.

This invention involves a balance scale with a base, a balance arm support, a balance arm, a pointer, and a movable label plate containing descriptions. The balance arm has a tray on each end, where one tray holds an article representing mankind with sin, and the other tray holds an article representing the redemptive work of Jesus Christ. The articles on each tray are of equal or approximately equal weight. The scale rotates when the weight of the articles are added to or removed from the trays, and the scale rotation will determine which description the pointer will point to. This invention can be used as a Christian teaching aid showing the benefit of choosing to accept the death of Christ as payment in full for our sins, along with showing the consequence of our refusal to accept the death of Christ as payment for our sins.

A vehicle extrication door system that is a training simulator which is used to simulate opening the door of a vehicle that has been involved in an accident. The vehicle extrication door system comprises two supports, two consumable pieces, a first connector, and a compound hinge. Each support can have a proximate end, a distal end, an interior surface and an exterior surface, and each consumable piece can have an opening. The proximate end of the first support supports the first consumable piece, and the proximate end of the second support supports the second consumable piece. The opening of the first consumable piece aligns with the opening of the second consumable piece on the same horizontal axis and the first connector then passes through the openings of the consumable pieces and secures the first consumable piece to the second consumable piece. The first support is moveable between an open and a closed position.

A vehicle extrication door system that is a training simulator which is used to simulate opening the door of a vehicle that has been involved in an accident. The vehicle extrication door system comprises two supports, two consumable pieces, a first connector, and a compound hinge. Each support can have a proximate end, a distal end, an interior surface and an exterior surface, and each consumable piece can have an opening. The proximate end of the first support supports the first consumable piece, and the proximate end of the second support supports the second consumable piece. The opening of the first consumable piece aligns with the opening of the second consumable piece on the same horizontal axis and the first connector then passes through the openings of the consumable pieces and secures the first consumable piece to the second consumable piece. The first support is moveable between an open and a closed position.

Various embodiments provide self-revealing gestures that are designed to provide an indication of how to perform one or more different gestures. In at least one embodiment, an initiation gesture is received, relative to an object. The initiation gesture is configured to cause presentation of a visualization designed to provide an indication of how to perform a different gesture. Responsive to receiving the initiation gesture, the visualization is presented without causing performance of an operation associated with the different gesture.