Results 261 to 270 of about 5,412 (286)

Flying Along a Logarithmic Spiral

Science, 2000
ORGANISMAL BIOLOGY Peregrine falcons use two high performance skills—flight speed and visual acuity—to attack their prey. In a trio of papers, Tucker and his colleagues model the quantitative aspects of aerodynamic drag, assess the optimal integration of speed and sight, and present field observations of falcon flight.
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Stability of Slopes by Logarithmic-Spiral Method

Journal of the Geotechnical Engineering Division, 1976
A logarithmic-spiral method programmed for a computer is presented for determining the factor of safety of a simple slope. The method differs from Taylor's in that the friction angle of the logarithmic spiral is not a constant but varies with the factor of safety.
Yang H. Huang, Craig M. Avery
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Logarithmic Spirals and Computer Art

1989
Interesting geometric patterns are obtained by mapping a rectangular region in one coordinate system onto an annular region in another coordinate system. The mapping involves logarithmic spirals and several examples are presented which involve interlocking spirals, cubes and dragon patterns.
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Brachiopod outline and the importance of the logarithmic spiral

Paleobiology, 1998
Abstract To a first approximation, the logarithmic spiral is a close fit to the biconvex lateral outline of three terebratellid genera from Australasia. Investigation of spiral parameters confirms the value of the biconvex morphospace of McGhee (1980), but not the method for estimating the spiral itself.
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Infinity as a Fractal Logarithmic Spiral

Classical mathematics treats innity as a direction: the number line extends without end. Cantor's cardinal arithmetic reveals that some innities are larger than others but preserves the linear structure. Fractal Uncertainty Theory (FUT) and Coherent Mathematics (CoMath) propose a fundamentally dierent geometry: innity is a fractal logarith-mic spiral ...
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Logarithmic-spiral magneto-electric dipole antenna for 5G communication

AEU - International Journal of Electronics and Communications, 2023
Rishabh Kumar Baudh, V Dinesh Kumar
exaly  

Reflectarray with logarithmic spiral lattice of elementary antennas on its aperture

AEU - International Journal of Electronics and Communications, 2016
Muhammad Wasif Niaz, Zubair Ahmed
exaly  

Accurate modeling of logarithmic spiral bevel gear based on the tooth flank formation and Boolean addition operation

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2016
Lizhi Gu
exaly  

Design of high return loss logarithmic spiral antenna

Microwave and Optical Technology Letters, 2017
Leonardo Morbidel, Pablo A Costanzo Caso   +1 more
exaly  

RETRACTED: Properties of Logarithmic Spirals and Logarithmic Spiral Sectors

1987
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