|
Rotational inertia and multimodal heaviness perception
|
Perceived heaviness of wielded objects has been shown to be a function of the objects' rotational inertia-the objects' resistance to rotational acceleration. Studies have also demonstrated that if virtual objects rotate faster than the actual wielded object (i.e., a rotational gain is applied to virtual object motion), the wielded object is perceived as systematically lighter. The present research determined whether combining those inertial and visual manipulations would influence heaviness p...
Related newspaper, magazine, and journal articles from HighBeam Research
|
Rotational kinematics influence multimodal perception of heaviness
Psychonomic Bulletin & Review
; Perceived heaviness has been shown to be specific to an object's rotational inertia (I), its resistance to rotational acceleration. According to the kinematic specification of dynamics (KSD) principle, we hypothesized that I is optically specified by rotational kinematics. Using virtual depictions
|
|
Toying with tops: taking a spin off physics.(lesson using tops to teach physics concepts)
Science Activities
; If you want your students to get on TOP of some physical science concepts, then try having them take a spin with their own creations! Designing, building, and testing tops provide students with exciting and creative experiences that are more than just fun. Tops can also teach physics concepts
|
|
Metrically measured motions: the expanding range of metric-sized motion-control components eliminates excuses for not designing to metric standards.(Motions)
Machine Design
; The process of designing with metric motion-control components is quite similar to that with their English-dimensioned counterparts. The same design principles and formulas used for English-based measurements apply to metric values. The engineer still needs to know force, lead, and efficiency to
|
|
Circus science: no one can ignore the laws of the physical world, least of all the performers who seem to flout them.
Discover
; Number theory and neuroscience are probably not the first things that come to mind when you contemplate the circus. Yet along with the clowns and the fireeaters, there's a place for science under the big top. Performers and their coaches have to know, either instinctively or consciously, what the
|
|
Nonvisible perception of segments of a hand-held object and the attitude spinor.
Journal of Motor Behavior
; Key words: attention, haptic perception, manipulation, spinors The size of an object held firmly in the hand and wielded, or held between the thumb and fingers and twiddled, can be perceived to a reasonable approximation without looking (Turvey, 1996; Turvey & Carello, 1995). This nonvisible
|
|
The Science of Football; If You Want to Master the Game, Don't Pass or Punt on Physics
The Washington Post
; Whether you're playing football or just watching, much of the fun lies in the game's unpredictability. Who isn't excited by a slippery runner who dodges half of the other team, a desperate pass that turns a potential sack into a long gain or a critical fumble that transforms despair into hope -- or
|
|
|
Accelerometer fits tight spaces. (Instruments and Measurement).
Machine Design
; The SR-220RNP angular accelerometer from Columbia Research Laboratories, Woodlyn, Pa., targets applications where space is at a premium. Powered by a [+ or -] 15-Vdc source, it operates in environments from -50 to 85[degrees]C. Available sensing ranges include [+ or -]100, 500, 1,000, and 5,000
|
|
Launch a Frisbee into Orbit! (The Space Place).
The Technology Teacher
; When Pete Rossoni was a kid he loved to throw Frisbees. Most kids do--it's pure fun. But in Pete's case it was serious business. He didn't know it, but he was practicing for his future career in space exploration. Grown-up Pete Rossoni is now an engineer at NASA's Goddard Space Flight Center. His
|
|
Dancer absorbs tension disturbances.(FOCUS: TENSION CONTROL)
Converting
; Co.'s inertia-compensated dancer is a constant tension device that relies on the laws of physics rather than complex controls for controlling web tension. Tension is established by the dancer and proportional feedback from its travel is used to maintain the dancer within its stroke. The dancer
|
|
Rotating cylinders.(Q&A)
Motion System Design
; Q: When is it necessary to study the inertial characteristics of cylinders? A: They're relevant whenever an apparatus must accelerate and response is crucial. They predict the performance of shafts and other spinning components--motors, clutches, and couplings. Inertial characteristics also affect
|