Gravitational Energy; Aerospace’s Future Technology

2021 ◽  
pp. 3-27
Author(s):  
Hussam Elbehiery ◽  
Khaled Elbehiery
Keyword(s):  
Gravitational Energy ◽  
Future Technology

Incompleteness of General Relativity, Einstein's Errors, and Related Experiments-- American Physical Society March meeting, Z23 5, 2015 --

2015 ◽  
Vol 8 (2) ◽  
pp. 2135-2147 ◽  
Author(s):  
C. Y. Lo
Keyword(s):  
General Relativity ◽  
Einstein Equation ◽  
Reaction Force ◽  
Radiation Reaction ◽  
Gravitational Energy ◽  
Energy Conditions ◽  
Experimental Investigations ◽  
Positive Mass Theorem ◽  
Wave Source ◽  
Photonic Energy

General relativity is incomplete since it does not include the gravitational radiation reaction force and the interaction of gravitation with charged particles. General relativity is confusing because Einstein's covariance principle is invalid in physics. Moreover, there is no bounded dynamic solution for the Einstein equation. Thus, Gullstrand is right and the 1993 Nobel Prize for Physics press release is incorrect. Moreover, awards to Christodoulou reflect the blind faith toward Einstein and accumulated errors in mathematics. Note that the Einstein equation with an electromagnetic wave source has no valid solution unless a photonic energy-stress tensor with an anti-gravitational coupling is added. Thus, the photonic energy includes gravitational energy. The existence of anti-gravity coupling implies that the energy conditions in space-time singularity theorems of Hawking and Penrose cannot be satisfied, and thus are irrelevant. Also, the positive mass theorem of Yau and Schoen is misleading, though considered as an achievement by the Fields Medal. E = mc2 is invalid for the electromagnetic energy alone. The discovery of the charge-mass interaction establishes the need for unification of electromagnetism and gravitation and would explain many puzzles. Experimental investigations for further results are important.

The Weight Reduction of Charged Capacitors, Charge-Mass Interaction, and Einstein's Unification

2015 ◽  
Vol 7 (3) ◽  
pp. 1959-1969 ◽  
Author(s):  
C. Y. Lo
Keyword(s):  
General Relativity ◽  
Weight Reduction ◽  
Gravitational Force ◽  
Gravitational Energy ◽  
Repulsive Force ◽  
Mass Force ◽  
Charge Mass ◽  
Energy Stress ◽  
Current Mass ◽  
Photonic Energy

The Biefeld-Brown (B-B) effect consists of two parts: 1) the initial thrust is due to the electric potential that moves the electrons to the positive post; and 2) the subsequent lift is due to the separate concentration of the positive and the negative charges. The weight reduction of a charged capacitor is due to a repulsive charge-mass interaction, which is normally cancelled by the attractive current-mass interaction. In a charged capacitor, some electrons initially moving in the orbits become statically concentrated and thus a net repulsive force is exhibited. Based on observations, it is concluded that a repulsive charge-mass interaction is proportional to the charge density square and diminishes faster than the attractive gravitational force, and that the current-mass force is perpendicular to the current. This charge-mass interaction is crucial to establish the unification of electromagnetism and gravitation. To confirm general relativity further, experimental verification of the details of this mass-charge repulsive force is recommended. Moreover, general relativity implies that the photons must include gravitational energy and this explains that experiments show that the photonic energy is equivalent to mass although the electromagnetic energy-stress tensor is traceless. In general relativity,it is crucial to understandnon-linear mathematics and that the Einstein equation has no bounded dynamic solutions. However, due to following Einstein's errors, theorists failed in understanding these and ignored experimental facts on repulsive gravitation. Since the charge-mass interaction occurs in many areas of physics, Einstein's unification is potentially another revolution in physics. Moreover, the existence of a repulsive gravitation implies the necessity of re-justifying anew the speculation of black holes.

Understanding Teens’ Perceptions and Aspirations towards Relationship with Personal Technology: Survey Study (Preprint)

2020 ◽  
Author(s):  
Muhammad Jee ◽  
Alsa Khan
Keyword(s):  
Online Survey ◽  
Design Thinking ◽  
Survey Study ◽  
User Experience Design ◽  
Personal Connection ◽  
New Associations ◽  
Future Technology ◽  
Use Of Technology ◽  
Personal Technology ◽  
Age Range

BACKGROUND Understanding teens' relationship with technology is a pressing topic in this digital era. There seem to be both benefit and harmful implications that originate from use of technology by teens. Approximately 95% of teenagers have access to a smartphone, and several studies show a positive correlation between screen addiction and trends of Anxiety and Depression. While, at the same time, research shows that two-thirds of teenagers believe that technology is a necessity for connecting and making new friends. OBJECTIVE The aim of this research is to understand teens’ perceptions of their own and others’ relationship with personal technology and what future relationships do teens aspire to have with their technology. This will be fundamental in helping designers, healthcare practitioners and youth counselors inform design in technology accordingly. METHODS This research paper explores teens and technology relationship via three lenses. Lens-1 is teens' perception of their current relationship with their personal technology as users. Lens-2 is teens' perception of others' (parents, siblings or friends) relationship with personal technology as bystanders. Lens-3 is teens’ aspiration of how they wish to relate to their personal technology. We conducted an online survey with 619 teens in the 13-19 years age range. RESULTS We found that teens selected 'Essential,' 'Distractive,' and 'Addictive' most commonly to describe their own and others' relationship with personal technology. Whereas teens selected 'Provides an escape' more to describe their own relationship with technology. In contrast, they selected 'It's just a tool' and 'Creates Barrier' more to describe others' relationship with technology. These trends are consistent across ages and genders. Additionally, we found that 13-15 year-olds, particularly the majority of females in this age range, wish to see their future technology as their 'best friend.' However, 16-17 year-olds’ top choice was 'I don't believe in personal connection with mobile technology,’ and 18-19 year-olds’ top choice was 'My personal assistant.’ CONCLUSIONS Our three lenses approach is holistic as it allowed comparison of how teens perceive their relationship with personal technology as users vs. bystanders and from current vs. aspirational perspectives. This research not just confirms what is already known, but uncovers critical new associations more exclusive to teens' own relationship with technology. This paper presents related design implications to inform personal tech design thinking, including our guideline to shift 'user experience design' process to 'user relationship design.'

General Relativity

2019 ◽  
Author(s):  
Steven Carlip
Keyword(s):  
General Relativity ◽  
High Energy Physics ◽  
Hamiltonian Formulation ◽  
Experimental Tests ◽  
High Energy ◽  
Gravitational Energy ◽  
Field Equations ◽  
Physics First ◽  
Condensed Matter Theory ◽  
Introductory Textbooks

This work is a short textbook on general relativity and gravitation, aimed at readers with a broad range of interests in physics, from cosmology to gravitational radiation to high energy physics to condensed matter theory. It is an introductory text, but it has also been written as a jumping-off point for readers who plan to study more specialized topics. As a textbook, it is designed to be usable in a one-quarter course (about 25 hours of instruction), and should be suitable for both graduate students and advanced undergraduates. The pedagogical approach is “physics first”: readers move very quickly to the calculation of observational predictions, and only return to the mathematical foundations after the physics is established. The book is mathematically correct—even nonspecialists need to know some differential geometry to be able to read papers—but informal. In addition to the “standard” topics covered by most introductory textbooks, it contains short introductions to more advanced topics: for instance, why field equations are second order, how to treat gravitational energy, what is required for a Hamiltonian formulation of general relativity. A concluding chapter discusses directions for further study, from mathematical relativity to experimental tests to quantum gravity.

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