A ballistic device is easily and safely operated and modified by students to change different variables between experiments performed by the students. For example, the ballistic device is configured to facilitate adjusting the number and/or strength of the tensioning members applying a bias to the launching member to facilitate adjusting a location of the launch pad along a length of the launching member. A trigger arrangement is configured to be actuated at a safe distance from the ballistic device.

A ballistic device is easily and safely operated and modified by students to change different variables between experiments performed by the students. For example, the ballistic device is configured to facilitate adjusting the number and/or strength of the tensioning members applying a bias to the launching member to facilitate adjusting a location of the launch pad along a length of the launching member. A trigger arrangement is configured to be actuated at a safe distance from the ballistic device.

An electronic apparatus according to an embodiment comprises: at least one processor; and at least one memory storing instructions. The instructions are executed by the at least one processor to perform: identifying at least one scientific theoretical formula relating to one or more scientific characteristics of which data is measured, setting a coordinate system that includes a coordinate axis to which at least a part of the identified at least one scientific theoretical formula is assigned, and plotting the measured data of the one or more scientific characteristics on the set coordinate system to display a first graph on a display.

An electronic apparatus according to an embodiment comprises: at least one processor; and at least one memory storing instructions. The instructions are executed by the at least one processor to perform: identifying at least one scientific theoretical formula relating to one or more scientific characteristics of which data is measured, setting a coordinate system that includes a coordinate axis to which at least a part of the identified at least one scientific theoretical formula is assigned, and plotting the measured data of the one or more scientific characteristics on the set coordinate system to display a first graph on a display.

An interactive black hole orbital simulator includes a base. The base includes a first end, a second end, an upper surface and a lower surface. The upper surface includes a guide running from the first send to the second end. A vertical shaft extends from the second end of the base. A horizontal shaft extends from a top end of the vertical shaft towards the first end of the base. The present invention further includes a slide frame and an orbital displacement disc. The slide frame includes a bottom and a top. A rail is formed on the bottom. The rail slidably engages with the guide. A first magnet is secured to the top. The orbital displacement disc hangs from the horizontal shaft above the slide frame by at least one cord. The orbital displacement ring includes a second magnet.

An interactive black hole orbital simulator includes a base. The base includes a first end, a second end, an upper surface and a lower surface. The upper surface includes a guide running from the first send to the second end. A vertical shaft extends from the second end of the base. A horizontal shaft extends from a top end of the vertical shaft towards the first end of the base. The present invention further includes a slide frame and an orbital displacement disc. The slide frame includes a bottom and a top. A rail is formed on the bottom. The rail slidably engages with the guide. A first magnet is secured to the top. The orbital displacement disc hangs from the horizontal shaft above the slide frame by at least one cord. The orbital displacement ring includes a second magnet.

A sensor for measuring shear force and a dummy for testing a vehicle using the same are provided herein. A sensor for measuring shear force which is configured to quantitatively accurately measure shear force applied to a human body who sits on a vehicle seat, and a dummy for measuring shear force using the sensor are provided, wherein the sensor for measuring shear force includes an upper block, an intermediate block and a lower block and is configured such that a first strain gauge is mounted upright between the upper block and the intermediate block and a second strain gauge is mounted upright between the intermediate block and the lower block so that the shear force can be accurately measured without being affected by horizontal tensile force.

A sensor for measuring shear force and a dummy for testing a vehicle using the same are provided herein. A sensor for measuring shear force which is configured to quantitatively accurately measure shear force applied to a human body who sits on a vehicle seat, and a dummy for measuring shear force using the sensor are provided, wherein the sensor for measuring shear force includes an upper block, an intermediate block and a lower block and is configured such that a first strain gauge is mounted upright between the upper block and the intermediate block and a second strain gauge is mounted upright between the intermediate block and the lower block so that the shear force can be accurately measured without being affected by horizontal tensile force.

Shape-matrix geometric instruments having numerous applications including, but not limited to, anti-counterfeiting, graphical passwording, games, and geometry education. A shape-matrix geometric instrument is a manufacture and/or a method whose design is based on a shape-matrix that, in turn comprises a set of building blocks that are N-dimensional polytopes. Corner shapes are positioned in or near the interior corner spaces of at least ones of the shape-matrix building blocks. At least ones of the corner shapes differ from others in at least one property or aspect including, for example, geometric shape, orientation within the building block, and one or more surface finishes, such as color, shading, cross-hatching or real or apparent texture.

Shape-matrix geometric instruments having numerous applications including, but not limited to, anti-counterfeiting, graphical passwording, games, and geometry education. A shape-matrix geometric instrument is a manufacture and/or a method whose design is based on a shape-matrix that, in turn comprises a set of building blocks that are N-dimensional polytopes. Corner shapes are positioned in or near the interior corner spaces of at least ones of the shape-matrix building blocks. At least ones of the corner shapes differ from others in at least one property or aspect including, for example, geometric shape, orientation within the building block, and one or more surface finishes, such as color, shading, cross-hatching or real or apparent texture.