1 Minimum size for 2 parakeets = 30â³ long x 18â³ deep x 18â³ high (Volume = 9,720â³ cubic inches) We offer this size to our budgie parakeet adopters â please see our bird supplies page for details.2  Minimum size for 3 parakeets = 32â³ long x 18â³ deep x 20â³ high (Volume = 11,520â³ cubic inches). Minimum size for 2 parakeets = 30â³ long x 18â³ deep x 18â³ high (Volume = 9,720â³ cubic inches) We offer this size to our budgie parakeet adopters â please see our bird supplies page for details.
Definitions of optic flow. Optic flow is defined as the change of structured light in the image, e.g. on the retina or the cameraâs sensor, due to a relative motion between the eyeball or camera and the scene. Further definitions from the literature highlight different properties of optic flow.igure 1: shows the production and detection of optic flow. a) Optic flow is generated on the retina by changes in the patterns of light. The example shows the shift of two visual features (star and hexagon) on a plane and their angular displacements on the surface of the eyeball.
Vortex flow meter is based on Carmen vortex principle, which adopts piezoelectric crystal as testing components. It is a new kind of stress detecting vortex flow meter. It has the advantages of wide range rate, high accuracy, low pressure loss, good medium generality, pulse signal output proportional to flow, convenient to connect with computer etc.