Results 11 to 20 of about 12,984 (332)
On the nonlinearity of a tuning fork [PDF]
American Journal of Physics, 2022 Tuning fork experiments at the undergraduate level usually only demonstrate a tuning fork's linear resonance. In this paper, we introduce an experiment that can be used to measure the nonlinear frequency response curve of a regular tuning fork. Using double-grating Doppler interferometry, we achieve measurement precision of the oscillation amplitude ...
Lintao Xiao +6 more
core +4 more sources
The Tuning Fork Revisited [PDF]
Diabetic Medicine, 1990 The performance of the Rydel‐Seiffer graduated tuning fork was examined in healthy subjects and in various groups of diabetic patients in order to evaluate its efficacy for identifying patients whose loss of vibration sensation may expose them to the risk of foot injury. Vibration perception score measured with the tuning fork declined with age (p <
Liniger C, Albeanu A, Bloise D, Assal JP
exaly +5 more sources
Sensors, 2019 A quartz tuning fork and its qPlus configuration show different characteristics in their dynamic features, including peak amplitude, resonance frequency, and quality factor.
Manhee Lee +3 more
doaj +4 more sources
A Frequency-Adjustable Tuning Fork Electromagnetic Energy Harvester [PDF]
Materials, 2022 In this paper, a frequency-adjustable tuning fork electromagnetic energy harvester is introduced. The electromagnetic vibration energy harvester can adjust its natural frequency according to a change in the environmental excitation frequency without any ...
Shiqiao Gao +2 more
exaly +3 more sources
Additively Manufactured Detection Module with Integrated Tuning Fork for Enhanced Photo-Acoustic Spectroscopy [PDF]
Sensors, 2022 Starting from Quartz-Enhanced Photo-Acoustic Spectroscopy (QEPAS), we have explored the potential of a tightly linked method of gas/vapor sensing, from now on referred to as Tuning-Fork-Enhanced Photo-Acoustic Spectroscopy (TFEPAS). TFEPAS utilizes a non-
Roberto Viola +2 more
doaj +2 more sources
A Tuning Fork Frequency Up-Conversion Energy Harvester [PDF]
Sensors, 2021 In this paper, a novel tuning fork structure for self-frequency up-conversion is proposed. The structure has an in-phase vibration mode and an anti-phase vibration mode. The in-phase vibration mode is used to sense the environment vibration, and the anti-
Qinghe Wu +5 more
doaj +2 more sources
Applications of the quartz tuning fork in classical and superfluid hydrodynamics [PDF]
EPJ Web of Conferences, 2012 We present a short review of the multitude of applications of the commercially produced quartz tuning fork in cryogenic fluid dynamics, using cold gaseous, normal liquid and superfluid 4He as working fluids with extraordinary, but well-known and tunable ...
La Mantia Marco +2 more
doaj +2 more sources
The Effect of Displacement Constraints on the Failure of MEMS Tuning Fork Gyroscopes under Shock Impact [PDF]
Micromachines, 2019 Displacement constraints such as stops are widely used in engineering to improve the shock resistance of microelectromechanical system (MEMS) tuning fork gyroscopes. However, in practical applications, it has been found that unexpected breakage can occur
Jiangkai Lian, Jianhua Li, Lixin Xu
doaj +2 more sources
History and Evolution of the Tuning Fork. [PDF]
CureusThis paper is a summary of the evolution of the tuning fork, a crucial part of the cranial nerves and auditory examination. The tuning fork is a two-pronged fork that resonates at a specific pitch when struck against a surface and has been proven to be incredibly useful in diagnosing and detecting hearing disorders.
Eraniyan K, Ganti L.
europepmc +3 more sources
Mid-infrared intracavity quartz-enhanced photoacoustic spectroscopy with pptv – Level sensitivity using a T-shaped custom tuning fork [PDF]
Photoacoustics, 2022 Resonant optical power buildup inside a high finesse cavity is exploited to boost the sensitivity in quartz-enhanced photoacoustic spectroscopy (QEPAS) for CO, N2O and H2O detection, operating at a wavelength of 4.59 µm.
Jakob Hayden +4 more
doaj +2 more sources