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| viXra.org > Classical Physics > 2602 |
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[7] viXra:2602.0153 [pdf] submitted on 2026-02-26 14:08:13
Authors: Mikhail Basov
Comments: 17 Pages.
Temperature characteristics are one of the key parameters determining the performance of MEMS pressure sensor under specific operating conditions. This research demonstrates a new microassembly design for differential pressure sensor with adjustable ranges of 10u202660 kPa. A distinguishing feature of this microassembly is its use of stops for pressure sensor chip with sensitivity of S = 0.61 ± 0.15 mV/V/kPa. Developed pressure sensor enables to withstand proof pressure of 1.5 MPa. The proposed base geometry of the microassembly significantly reduces the impact of residual mechanical stresses (RMS) by all mechanical connections of pressure sensor chip, which is subjected to thermocycling and barocycling. It has been proven that it is possible to achieve errors in the temperature hysteresis of the zero signal (THZ) of less than 0.25%/FS in a wide temperature range from -65u2070С to +85u2070С, despite the requirement of top mechanical stop (as an additional source of RMS), which is only necessary to increase the overload capacity of pressure sensor.
Category: Classical Physics
[6] viXra:2602.0137 [pdf] submitted on 2026-02-23 13:21:31
Authors: Bojidar Djordjev
Comments: 20 Pages.
A new method for determining the direction of the gyroscopic torque is proposed based on the inertial potential of the changed direction of the orbital velocity in the plane of precession. It is shown that it is a theoretical prerequisite for the application of the Laws of Nonlinear Dynamics to the gyroscope. The Nonlinear Dynamics and the New Method for Calculating the Gyroscopic Torque are discussed. Theses and comments.
Category: Classical Physics
[5] viXra:2602.0134 [pdf] replaced on 2026-04-08 21:06:27
Authors: Alvydas Jakeliunas
Comments: 9 Pages. final update
In Lorentz Ether Theory, FitzGerald-Lorentz contraction affects all matter — containers, molecules, and the electromagnetic interactions between them. In a static gas, the anisotropic collision cross-sections of contracted molecules drive the density distribution toward the same anisotropy as in a solid, restoring the SR/LET equivalence. However, this equilibration proceeds at the diffusion timescale τ_diff ~ L²/D — hundreds to thousands of seconds for a laboratory gas cell. In a continuously rotating experiment with period T_rot ~ 5—60 s, the anisotropy cannot keep pace with the changing contraction direction: the gas density remains isotropic while the solid tracks the contraction instantaneously. This timescale separation creates a measurable difference: the directional density of a gas (molecules per unit length) is isotropic, while that of a solid is anisotropic. The resulting fringe shift on rotation is ΔN = k(L/2λ)(n−1)(v/c)², where k is the number of passes. The signal scales linearly with gas pressure — providing a built-in calibration. We predict null results for solid-dielectric interferometers regardless of refractive index.
Category: Classical Physics
[4] viXra:2602.0118 [pdf] submitted on 2026-02-21 20:20:56
Authors: Marco De Lorenzo
Comments: 43 Pages. (Note by viXra Admin: An abstract in the article is required and please cite and list scientific references)
This work presents a geometric re-foundation of physics, starting from a single postulate: the representation space is Euclidean, rigid, with fixed points and invariant distances. Time is not a coordinate, but an external parameter.From this postulate and the coherence condition (constant vector velocity of the representation system), we deduce the existence of a complex velocity, where is a geometric constant and a real phase.
Category: Classical Physics
[3] viXra:2602.0104 [pdf] submitted on 2026-02-20 20:01:55
Authors: Russell P. Patera
Comments: 8 Pages.
Pivot Vectors are used to derive the orthonormal triad that forms the basis vectors of rotational quaternions. Pivot Vectors are also used to derive Hamilton’s rules for quaternion algebra, which forms the foundation of quaternion parameterization of attitude. The concepts of simultaneous rotations and sequential rotations are used with Hamilton’s rules to derive the quaternion composition rule for rotations. The quaternion derivation of the rotation composition rule is compared to the Pivot Vector derivation to clarify the respective attitude parameterizations.
Category: Classical Physics
[2] viXra:2602.0075 [pdf] submitted on 2026-02-12 04:40:13
Authors: Andrew T. Hamilton
Comments: 3 Pages.
The Röntgen interaction between a point electric dipole and the electromagnetic field does not carry over to a continuous medium that is polarized. Consequently, the kinetic momentum density of light in a medium is not, as Barnett contends in his ‘Resolution of the Abraham—Minkowski Dilemma’, the Abraham form (although the canonical momentum density is the Minkowski form). As a result, the resolution is flawed, albeit not fatally.
Category: Classical Physics
[1] viXra:2602.0025 [pdf] submitted on 2026-02-04 23:24:50
Authors: Stefano Giardinelli
Comments: 34 Pages. In Italian (Note by viXra Admin: Author name, an abstract and scientific references are required in the article - Please conform!)
How is the trajectory of a space probe designed? What are the invisible laws that govern the flight of satellites and their encounters with distant worlds? In this treatise, The author guides the reader through a logical and mathematical journey that reveals the secrets of space navigation. Starting from Newton's fundamental principles and Kepler's laws, the work explores with clarity and rigor the pillars of orbital dynamics: u2022 The basics of motion: From circular orbits to the energy analysis of bound systems. u2022 Flight technology: The operation of rocket engines, the Tsiolkovsky equation, and propellant management. u2022 Interplanetary maneuvers: The Hohmann transfer, the study of spheres of influence, and the complex geometry of Lagrange points. u2022 The Mars mission: A detailed, step-by-step analysis for planning a trip to the Red Planet. u2022 The slingshot effect: How to use the gravity of planets (Gravity Assist) to navigate the Solar System without consuming propellant. Richly illustrated and accompanied by a precise mathematical framework, Orbital Motions is an essential work for physics students, space enthusiasts, and anyone who wishes to understand orbital mechanics.
Category: Classical Physics
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