摘要:
A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a hydraulic pressure supply device, a torsion detection mechanism, and a controller. The torsion detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. The displacement gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. The controller calculates a relative torsional angle between the first attachment member and the second attachment member based on the detected displacement.
摘要:
The apparatus has a transparent casing and an oblong toroidal shape in the form of a bucket elevator. First and second vertical compartments are separated by a partition and a clear cylindrical passage is formed around the circumference of the apparatus. First and a second sheaves are mounted above one another along the partition. A flexible loop is mounted around the sheaves and a series of balloons attached to the flexible loop at spaced intervals. The first compartment is opened to ambient air. The lower region is filled with argon gas and the second compartment is filled with helium gas. The balloons are filled with the helium gas such that the balloons have buoyancy in the first compartment and heaviness in the second compartment, and the pool of argon gas impedes the diffusion of ambient air in the second compartment.
摘要:
A method for analyzing interaction force between molecules, comprising: it's based on Equilibrium Condition Objects, through the one ideal experiment now regarded as no air pressure between the contact surfaces and making experimental analysis on the change of stress on the object of study in a vacuumizing process, obtaining the macro demonstrated size of the molecular force as well display effect of elasticity and friction, verifying the qualitative relationship between the micro demonstrated molecular force and distance, and finally deducing the relationship between existing molecular force and distance.
摘要:
The device is a four-dimensional gyroscope, demonstrating the connection between the translational and the rotational inertia, which leads to the violation of the Momentum Conservation Law of the center of masses during its absolute elastic collision with the wall. For the proof of the violation of one of the basic Laws of Classic Mechanics the device is equipped with the scientific-research complex, that allows to observe double, triple, etc collisions of the four-dimensional gyroscope, as well as to perform comparison of the theoretical calculations with the experimental data.
摘要:
An ultrasonic Doppler flow phantom is described which is formed of tissue-mimicking material containing a plurality of fluid flow paths through which fluid is pumped. The fluid flow paths are made of tubing and each extends over a different portion of the depth of the phantom and at a different angle. Each path is individually accessible by a probe located on the simulated skin surface at the top of the phantom, enabling the performance of the probe to be evaluated over a wide range of depths from shallow to very deep and over several flow angles.
摘要:
The apparatus has a transparent casing and an oblong toroidal shape in the form of a bucket elevator. First and second vertical compartments are separated by a partition and a clear cylindrical passage is formed around the circumference of the apparatus. First and a second sheaves are mounted above one another along the partition. A flexible loop is mounted around the sheaves and a series of balloons attached to the flexible loop at spaced intervals. The first compartment is opened to ambient air. The lower region is filled with argon gas and the second compartment is filled with helium gas. The balloons are filled with the helium gas such that the balloons have buoyancy in the first compartment and heaviness in the second compartment, and the pool of argon gas impedes the diffusion of ambient air in the second compartment.
摘要:
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.
摘要:
An exhibit to assist in teaching mathematical properties to individuals may include a tricycle with square wheels. The tricycle may be mounted on a circular track with arcuate segments that effectively smooth out the motion imparted by the square wheels.
摘要:
Disclosed herein is a test apparatus for early landslide detection fully-connected with pore water pressure, surface displacement and shear surface. The test apparatus calculates a factor of safety of a slope based on variation in pore water pressure, surface displacement and shear surface of a soil mass, and predicts a change in factor of safety, thus making early landslide detection possible. In the test apparatus, while a container of a slider is moved with a soil mass loaded into the container, shear surface and surface displacement environment is provided, and the shear strength and the shear stress of the soil mass can be calculated based on the pore water pressure and the weight of the soil mass. Thereby, the factor of safety of the soil mass can be calculated, and early landslide detection can be realized by using variation of the factor of safety of the slope.
摘要:
The present invention provides a computer-implemented method of problem solving that includes graphically displaying a plurality of concepts, dynamic links between the concepts, and solving a problem based on the displayed concepts and dynamic links. Other embodiments include: a computer-readable medium having instructions thereon for causing a suitably programmed information-processing apparatus to perform a method of the problem solving that includes graphically displaying a plurality of concepts, displaying dynamic links between the concepts, and solving a problem based on the displayed concepts and dynamic links. Still other embodiments include a computerized apparatus that includes a display output unit, a display drive unit that causes a plurality of concepts to be displayed on the display unit, and that causes dynamic links between the concepts to be displayed, and a solution unit that solves a problem based on the displayed concepts and dynamic links, and that displays the solution.