Air Track
Air Track - Related Videos
05:55
Multiple Object Tracking
0 Views •
2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University In a staggeringly complex and engaging world, it is crucial to selectively process some stimuli at the expense of others. Experimental psychologists call this ability attention. Specifically, visual attention refers to the ability to selectively process aspects of a visual scene. Many paradigms used to study visual attention involve brief, punctuated, and repeated trials. However, everyday situations often place sustained demands...
01:27
Air-entraining Agents
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2024
Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
06:19
Eye Tracking in Cognitive Experiments
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2023
Eye tracking as the name suggests involves tracking of eye-movements. It is a non-invasive, sensitive tool that quantifies and measures eye-movements to describe an individuals' cognitive state. An eye-movement between two fixation points is called a saccade, which is one of the fastest motor movements in our body. By observing the profiles of these eye movements, scientists can better understand neural deficits in patients with cognitive impairments. In this video, we will first look at an...
09:03
Eye Tracking Young Children with Autism
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Cited by 93 •
2012
Eye tracking has long been used to study gaze patterns in typically-developing individuals, but recent technological advancements have made its use with clinical populations, including autism, more feasible. While eye-tracking young children with autism can offer insight into early symptom manifestations, it involves methodological challenges. Suggestions for best practices are provided.
07:36
C. elegans Tracking and Behavioral Measurement
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Cited by 14 •
2012
We have developed a video-rate tracking microscope system that can record and quantify C. elegans behavior at high resolution and high speeds. We have also developed computational methods to reduce the dimensionality of the worm images to a fundamental set of measurements that completely describe the shape of the worm.
FAQs
Air flowing through the small holes lifts the glider slightly above the track surface, creating a cushion that greatly reduces contact resistance. This allows the glider’s motion to respond mainly to applied forces rather than surface friction. The reduced resistance makes changes in motion easier to measure and compare with mechanical predictions.
Lower resistance helps isolate the relationship between applied force and resulting motion. Because fewer unwanted forces affect the glider, observed acceleration can be interpreted more directly in terms of the applied force. This controlled condition supports quantitative tests of Newton’s laws and helps connect theoretical descriptions of motion with laboratory measurements.
Collision experiments can compare the motion of gliders before and after they interact. In elastic interactions, the measurements can be evaluated for conservation of both momentum and kinetic energy, whereas inelastic interactions are assessed differently because kinetic energy is not treated as conserved in the same way. These comparisons clarify how collision type affects outcomes.
Position, velocity, and time provide quantitative descriptions of how a glider moves during an experiment. Examining these measurements allows researchers and students to determine changes in motion, evaluate acceleration, and compare observations with predictions based on force and Newton’s laws. The data also support tests of momentum and kinetic-energy conservation during collisions.
A basic investigation establishes motion on the track, introduces an applied force or a glider interaction, and records position, velocity, and time. The resulting measurements are then compared with the relevant mechanical prediction, such as acceleration from force or conservation during a collision. This sequence turns controlled motion into evidence for physical principles.
An Air Track is useful when the goal is to examine one-dimensional motion with minimal resistance and controlled interactions. It supports laboratory studies of acceleration, Newton’s laws, and collisions while making position, velocity, and time measurable. In physics education and research, it provides a practical way to connect mechanics theory with quantitative observations.