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An eyelash (also called lash) (Neo-Latin: cilium, plural cilia) is one of the hairs that grows at the edges of the top and bottom eyelids, spanning outwards and away from the eyes. The lashes grow in up to six layers on each of the upper and lower eyelids. [1] Eyelashes serve to protect the eye from debris, dust, and small particles, and are ...
Aeroelasticity. Aeroelasticity is the branch of physics and engineering studying the interactions between the inertial, elastic, and aerodynamic forces occurring while an elastic body is exposed to a fluid flow. The study of aeroelasticity may be broadly classified into two fields: static aeroelasticity dealing with the static or steady state ...
Conductor gallop is the high-amplitude, low-frequency oscillation of overhead power lines due to wind. [1] The movement of the wires occurs most commonly in the vertical plane, although horizontal or rotational motion is also possible. The natural frequency mode tends to be around 1 Hz, leading the often graceful periodic motion to also be ...
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Flutter (software) Flutter is an open-source UI software development kit created by Google. It can be used to develop cross platform applications from a single codebase for the web, [4] Fuchsia, Android, iOS, Linux, macOS, and Windows. [5] First described in 2015, [6][7] Flutter was released in May 2017. Flutter is used internally by Google in ...
This vibration was caused by aeroelastic fluttering. Full-scale, two-way Fluid Structure Interaction (FSI) model of the Tacoma Narrows Bridge exhibiting aeroelastic flutter. Fluttering is a physical phenomenon in which several degrees of freedom of a structure become coupled in an unstable oscillation driven by the wind. Here, unstable means ...
Flutter valve. In respiratory medicine, a flutter valve (also Pneumostat valve, and Heimlich valve) is a one-way check valve used to prevent airflow back into a chest tube, and usually is applied to drain air from a pneumothorax. [1] The design of the flutter valve features a rubber sleeve in a plastic case, where the rubber sleeve is arranged ...
The terms "wow and flutter" are often referred to together, flutter being a higher-rate version of wow. Scrape flutter—a high-frequency flutter of above 1000 Hz—can sometimes occur from the tape vibrating as it passes over a head, as a result of rapidly interacting stretch in the tape and stiction at the head. It adds a roughness to the ...