Jon Geist
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View article: Reanalysis of Everett's relative-state formulation of quantum mechanics
Reanalysis of Everett's relative-state formulation of quantum mechanics Open
Everett's "Relative State Formulation of Quantum Mechanics" (RSQM), which appeared in Reviews of Modern Physics, is based on his thesis "The Theory of the Universal Wavefunction". The most noteworthy property of these works is the claim by…
View article: Experimental tests of alternate postulates to describe excited-state decay in DeWitt-like and Everett-like versions of quantum mechanics
Experimental tests of alternate postulates to describe excited-state decay in DeWitt-like and Everett-like versions of quantum mechanics Open
Simulations of the observed transition rate (decay rate) versus time for excited-state decay in Everett's relative-state formulation of quantum mechanics and DeWitt-like extension of Everett's formulation are described. It is shown that Ev…
View article: Reduction of calibration uncertainty due to mounting of three-axis accelerometers using the intrinsic properties model
Reduction of calibration uncertainty due to mounting of three-axis accelerometers using the intrinsic properties model Open
We show that the calibration of tri-axis accelerometers based on the device’s intrinsic properties alleviates the uncertainty due to mounting misalignment in comparison to the use of the sensitivity matrix. The intrinsic properties of a tr…
View article: Type B Uncertainty Analysis of Gravity-Based Determinations of Triaxial-Accelerometer Properties by Simulation of Measurement Errors
Type B Uncertainty Analysis of Gravity-Based Determinations of Triaxial-Accelerometer Properties by Simulation of Measurement Errors Open
We simulated the effects of gimbal-alignment errors and rotational step-size errors on measurements of the sensitivity matrix and intrinsic properties of a triaxial accelerometer. We restricted the study to measurements carried out on a tw…
View article: Characterization of laser Doppler vibrometers using acousto-optic modulators
Characterization of laser Doppler vibrometers using acousto-optic modulators Open
We report on a new approach to characterize the performance of a laser Doppler vibrometer (LDV). The method uses two acousto-optic modulators (AOMs) to frequency shift the light from an LDV by a known quantity to create a synthetic velocit…
View article: Accurate Localization Microscopy in Six Degrees of Freedom by Intrinsic Aberration Calibration
Accurate Localization Microscopy in Six Degrees of Freedom by Intrinsic Aberration Calibration Open
A standard paradigm of localization microscopy involves extension from two to three dimensions by engineering information into emitter images, and approximation of errors resulting from field dependence of optical aberrations. We invert th…
View article: Shock Measurements Based on Pendulum Excitation and Laser Doppler Velocimetry: Primary Calibration by SI-Traceable Distance Measurements
Shock Measurements Based on Pendulum Excitation and Laser Doppler Velocimetry: Primary Calibration by SI-Traceable Distance Measurements Open
A new method is described to provide a primary calibration of shock measurements produced by a shock measurement system consisting of pendulum excitation and laser Doppler velocimetry. The method uses the laser Doppler velocimeter to deter…
View article: Particle Tracking of Microelectromechanical System Performance and Reliability
Particle Tracking of Microelectromechanical System Performance and Reliability Open
Microelectromechanical systems (MEMS) that require contact of moving parts to implement complex functions exhibit limits to their performance and reliability. Here, we advance our particle tracking method to measure MEMS motion in operando…
View article: Gravity-Based Characterization of Three-Axis Accelerometers in Terms of Intrinsic Accelerometer Parameters
Gravity-Based Characterization of Three-Axis Accelerometers in Terms of Intrinsic Accelerometer Parameters Open
Cross-sensitivity matrices are used to translate the response of three-axis accelerometers into components of acceleration along the axes of a specified coordinate system. For inertial three-axis accelerometers, this coordinate system is o…
View article: Centroid precision and orientation precision of planar localization microscopy
Centroid precision and orientation precision of planar localization microscopy Open
Summary The concept of localization precision, which is essential to localization microscopy, is formally extended from optical point sources to microscopic rigid bodies. Measurement functions are presented to calculate the planar pose and…