Results 91 to 100 of about 337,652 (345)

The Doppler Effect

open access: yesEthnologia Europaea, 2005
At the last page of the first book Laura Ingalls Wilder wrote on her childhood Little house in the big woods she is lying in bed, while her father plays “Shall Auld Acquaintance be Forgot” on his violin. When the fiddle had stopped singing Laura called out softly, ‘What are days of auld lang syne, Pa?’‘They are the days of a long time ago, Laura’ Pa ...
openaire   +2 more sources

Displacement and Vibration Measurements with Interferometers: Benchmark Configurations, Performance, and R&D Opportunities

open access: yesAdvanced Photonics Research, EarlyView.
Self‐mixing interferometry is a powerful technique that brings together the exceptional sensitivity of phase measurements with the unequalled simplicity of the self‐mix configuration based on modulation of the cavity field induced by the return from the target. According to the selected measurand, displacement or vibration, and to the analog of digital
Silvano Donati
wiley   +1 more source

Integration of Soft‐Robotics and Deep Learning to Assess the Coordinated Biosonar Emission and Reception Dynamics in Hipposiderid Bats

open access: yesAdvanced Robotics Research, EarlyView.
Combining a biomimetic soft‐robot with deep‐learning data analytics sheds light on a unique peripheral dynamics seen in the biosonar system of bats: Bats modulate their ultrasonic biosonar signals upon emission as well as reception with variable, yet highly coordinated motion patterns of their noseleaves and pinnae.
Shuxin Zhang   +4 more
wiley   +1 more source

Magnetic field orientation effect on specific heat in a p-wave superconductor

open access: yes, 2006
The effect of magnetic field on specific heat of a p-wave spin triplet superconductor has been analyzed. To describe superconductivity we used a single band model with various realizations of p-wave order parameter and analyzed the effect of a Doppler ...
Annett   +21 more
core   +1 more source

A Quadruped Piezoelectric Ultrasonic Actuating Robot with Foot‐Leg‐Trunk‐Integrated Structure

open access: yesAdvanced Robotics Research, EarlyView.
This study proposes a novel foot‐leg‐trunk‐integrated quadruped piezoelectric ultrasonic actuating robot with small size and lightweight. A hybrid vibration mode combining the first‐order out‐of‐plane bending vibration of the trunk and the first‐order horizontal bending vibration of driving legs is designed to generate elliptical trajectories at foot ...
Jie Deng   +5 more
wiley   +1 more source

Why should we correct reported pulsation frequencies for stellar line-of-sight Doppler velocity shifts?

open access: yes, 2014
In the age of Kepler and Corot, extended observations have provided estimates of stellar pulsation frequencies that have achieved new levels of precision, regularly exceeding fractional levels of a few parts in $10^{4}$.
Campante, T. L.   +5 more
core   +1 more source

Modulus‐Switchable Miniature Robots for Biomedical Applications: A Review

open access: yesAdvanced Robotics Research, EarlyView.
Materials, robot designs, proof‐of‐concept functions, and biomedical applications of modulus‐switchable miniature robots. Miniature soft robots have shown great potential in biomedical applications due to their excellent controllability and suitable mechanical properties in biological environments.
Chunyun Wei, Yibin Wang, Jiangfan Yu
wiley   +1 more source

Reverse Doppler effect in backward spin waves scattered on acoustic waves

open access: yes, 2009
We report on the observation of reverse Doppler effect in backward spin waves reflected off of surface acoustic waves. The spin waves are excited in a yttrium iron garnet (YIG) film. Simultaneously, acoustic waves are also generated.
A. A. Serga   +12 more
core   +1 more source

Hard‐Magnetic Soft Millirobots in Underactuated Systems

open access: yesAdvanced Robotics Research, EarlyView.
This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang   +4 more
wiley   +1 more source

Christian andreas doppler

open access: yesJournal of the Practice of Cardiovascular Sciences, 2019
CA Doppler described the doppler effect which was a shift in the frequency of light. This theory was later used for multiple applications in electromagnetics, astronomy, physics, aviation and health sciences.
Shivani Vashistha, Soumi Das
doaj   +1 more source

Home - About - Disclaimer - Privacy