In an experiment on a mixture of water, surfactant (soap) and an organic salt, two researchers from the Pritchard Fluid Mechanics Laboratory at Penn State show that a rigid object
like a knife passes through the mixture at slow speeds as if it were a liquid, but rips it up as if it were a rubbery solid when the knife moves rapidly.
They cover physics and measurement, motion and its laws, vectors, circular motion and other notions from Newton, the energy of a system conservation of energy, linear momentum and collisions, rotation of a rigid object
about a fixed axis, angular momentum, static equilibrium and elasticity, universal gravitation, fluid mechanics, oscillatory motion, wave motion, sound waves, superposition and standing waves, temperature, the first and second laws of thermodynamics, the kinetic theory of gases, heat engines, and entropy.
In this protocol, the reference frame is shifted and the MMB brings a rigid object
into a stationary vehicle.
While existing frame-by-frame techniques can produce relatively realistic movement of rigid objects
, they remain unable to recreate the elegant and fluid movements of a non-rigid object
, such as a Sumo wrestler falling to the floor, a sea lion playing on a beach, or a bowl of Jello salad being set on a picnic table.
It can detect and recognize whether a particular rigid object
, such as a product, logo or building, is in a scene and identify its specific location in that scene.
with sharp edges like dropped tools; heavy equipment; winds which blow branches and debris onto roofs; and frequent foot traffic for general maintenance and repair can cause punctures at any time, explained Todd Kuykendall, director of Marketing and Product Management, Georgia-Pacific Gypsum.
They are more appropriate for representing simple rigid objects
2011, Tracking rigid objects
using integration of model-based and model-free cues.
, articulated bodies, meshes with fixed topology), utilizing the computational power of GPUs [1, 22-24], and introducing efficient culling methods .
The robot will start out with one arm picking up and using rigid objects
"just to get the teams' feet wet" and then graduate to two arms and more difficult to manipulate objects such as cloth, he said.
The real size of rigid objects
and of the artificial fish was unknown to the observers throughout the measurement experiment.
The tracked objects in the examples are almost rigid objects