Inertial and Accelerated Motion in Spacetime Physics

2021 ◽  
pp. 17-26
Author(s):  
Vesselin Petkov
Keyword(s):  
Accelerated Motion

On the motion of bodies based on changes in the kinetic moment

2019 ◽  
Vol 20 (4) ◽  
pp. 267-275
Author(s):  
Yury N. Razoumny ◽  
Sergei A. Kupreev
Keyword(s):  
Center Of Mass ◽  
Stellar Dynamics ◽  
Elementary Particles ◽  
The Body ◽  
Accelerated Motion ◽  
Indirect Confirmation ◽  
Physical Principles ◽  
Two Bodies ◽  
Central Gravitational Field ◽  
Kinetic Moment

The controlled motion of a body in a central gravitational field without mass flow is considered. The possibility of moving the body in the radial direction from the center of attraction due to changes in the kinetic moment relative to the center of mass of the body is shown. A scheme for moving the body using a system of flywheels located in the same plane in near-circular orbits with different heights is proposed. The use of the spin of elementary particles is considered as flywheels. It is proved that using the spin of elementary particles with a Compton wavelength exceeding the distance to the attracting center is energetically more profitable than using the momentum of these particles to move the body. The calculation of motion using hypothetical particles (gravitons) is presented. A hypothesis has been put forward about the radiation of bodies during accelerated motion, which finds indirect confirmation in stellar dynamics and in an experiment with the fall of two bodies in a vacuum. The results can be used in experiments to search for elementary particles with low energy, explain cosmic phenomena and to develop transport objects on new physical principles.

Continuous Extension and Indivisibles in Galileo

2020 ◽  
pp. 82-103
Author(s):  
Samuel Levey
Keyword(s):  
Continuous Extension ◽  
Accelerated Motion

This chapter studies Galileo’s account of continuous extension and his pioneering use of indivisibles in the analysis of paradoxes of infinity and continuity. Galileo’s treatment presents continuous magnitudes as composed of finite ever-divisible parts as well as infinitely many indivisible elements he calls partes non quanti. Special scrutiny is given to Galileo’s analysis of the paradox of Aristotle’s wheel as well as to Galileo’s account of continuous uniform and accelerated motion as it occurs in the Dialogo (1632) and the Discorsi (1638). Galileo’s discussion is illuminated by comparison with the techniques of Cavalieri and Huygens.

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