| viXra.org > Classical Physics > 2101 |
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| viXra.org > Classical Physics > 2101 |
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[2] viXra:2101.0150 [pdf] submitted on 2021-01-25 11:49:58
Authors: Russell P. Patera
Comments: 9 Pages.
Attitude kinematics is shown to be the fundamental cause of the apparent precession of the plane of motion of the Foucault Pendulum. Ishlinskii’s Theorem in attitude kinematics provides a derivation of the angle by which a Foucault pendulum precesses after one complete rotation of the Earth about its axis. A more recent kinematic theorem is used to provide a general derivation of the pendulum precession angle for any Earth rotation angle about its axis. The derivations of these precession equations enhance understanding of the phenomenon by focusing on the essential cause of the precession, while avoiding complicated dynamical analyses and associated mathematical machinery.
Category: Classical Physics
[1] viXra:2101.0055 [pdf] submitted on 2021-01-09 11:47:21
Authors: Neil Wong
Comments: 4 Pages. [Corrections made by viXra Admin to conform with the requirements on the Submission Form]
On 4th November 2019, Chow Tsz-lok fell from the third floor towards the second floor of Sheung Tak car park in Tseung Kwan O. Chow suffered multiple injuries, including a severe brain injury, which led to his death due to a cardiac arrest four days later. It was reported that Chow had a fractured right pelvis from likely a lateral compression, a torn internal iliac artery, a fractured skull base, bleeding in mainly the right half of the brain, and an intra-abdominal hemorrhage. He had no obvious injuries to his hands and feet, nor had he been shot with bullets or was he bruised from a beating. The toxicology results only showed drugs administered after his admission to the hospital. In order for Chow to fall from the third floor, he had to cross a $1.2m$ wall first. Different explanations about the incident have been proposed. These explanations include: 1. Chow approached the wall and fell down accidentally, 2. Chow climbed over the wall on purpose and fell down in a horizontal position by accident and 3. Chow was rendered unconscious and thrown from the third floor by someone else (in other words, Chow was murdered). In this article, I am going to examine the possibility of explanations 1 and 2. Due to lack of evidence, I am not going to discuss about explanation 3.
Category: Classical Physics
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