The signature of the quadratic generalized uncertainty principle on the newtonian gravity and galaxy mass profile

In this study, we discuss the corrections implies by the presence of the general uncertainty principle (GUP) on Newton’s law of gravity by virtue of Verlinde’s proposal. We argue here that GUP leads to twofold modification, namely on the equipartition theorem and the holographic relation (Bekenstein-Hawking formula). Hence, following Verlinde’s proposal, we obtain quantum corrections term to the Newtonian gravity. In addition, we also report the quantum corrected mass profile of the galaxy. We restricted our derivation to first order in the GUP’s free parameter and compared it analytically with the other relevant works.

A development of quantum gravity with Hamilton's tensor equation

This author further develops the theory of quantum gravity with Hamilton's tensor equation so as to achieve the compatibility between quantum and space-time. He also reveals the underlying new geometric structure behind it, which is the geometry of energy-time or matter-space that can be regarded as the further development of Einstein's space-time geometry. On this basis, this author probes into such topics that include CPT symmetry, new transistor, new superconductor, antigravity, and new law of gravity creating something out of nothing in the universe.

Gravity revealed as electromagnetic force

The earth is fundamentally protons, electrons, and neutrons. The force of gravity on earth could simply be a phenomenon of those elements. Lacking is any analysis demonstrating how electric charge forces of protons and electrons, both repulsive and attractive, can give rise to a gravitational force so much weaker and only attractive. Here application of Coulomb's law of electric charges shows the force of gravity derives from the basic proton-electron charge force. Separation of electrons from protons within any atom results in infinitesimal force imbalances, either repulsive or attractive, with every external proton-electron pair. When such force imbalances are accumulated using a Monte Carlo probability simulation for all charge pair in a large mass like the earth, repulsive forces are shown to never entirely cancel attractive forces and a weak net attractive force always remains. Coulomb's law yields the same force between earth and an object at its surface as Newton's law of gravity, confirming that gravity is an electromagnetic force and not a unique force of its own. This research is a mathematical analysis, an application of basic scientific principles much like the computer modeling of a complex engineered system. It has been done with no need for new theories, new speculation, abstract reasoning, nor abstract mathematics.

Constraining unparticle-inspired model parameters using dwarf stars

The unparticle-inspired model of gravity suggested by Georgi is based on that the standard model (SM) may contain a massive but scale invariant particles, which can be exchanged between SM massive particles, leading to a new force called ungravity. This would add a perturbed term to the Newtonian law of gravity at low energy. We use the minimum mass of hydrogen burning (MMHB) to constrain the relevant parameters of unparticle inspired model of gravity, on scales [Formula: see text] and [Formula: see text].

The Effect of Diboracy (Digital Book Containing Scientific Literacy) in Reducing Misconceptions on Newton’s Law of Gravity

The low utilization of technology and scientific literacy skills lacking in the classroomsremaina major problem in the learning and teaching process, specifically in influencing students' conceptual understanding. This research aims to analyze the effect of Diboracy (Digital Book Contained Scientific Literacy) in reducing misconceptions in Newton's law of gravity. This research uses experimentalresearch design with one group pre-test-post-test conductedon research subjects which were selected through random sampling technique. The sum of the research subjects include 38 students. The data instruments include tests and non-tests instruments. The test distributed is in the form of multiple choice questions equipped with CRI to measure the misconceptions, while the non-test assessmenttakes form of questionnaires to determine students’ responses to Diboracy. Data analysis was performed through t-test on student learning outcomes and the students’ questionnaire responseswhich resulted in the average percentages. Based on the analysis, it can be concluded that: (1) there is an effect in reducing students’ misconceptions when Diboracy is implemented, specifically regarding Newton's law of gravity; (2) students give better responses to Diboracy than textbooks.

Analisis Kebutuhan Media Pembelajaran Bermuatan Nilai-Nilai Karakter Islami Pada Materi Fisika

<p><strong>Abstract:</strong>. This research was conducted because of the challenges of 21st century education which requires students to be proficient in learning, digital literate, and have a strong character. The purpose of this study was to conduct a needs analysis for designing physics learning media. Needs analysis is carried out through literature studies and field studies. Study literature by collecting information about instructional media, the importance of character building, and the study of physics material that needs strengthening. Field studies were conducted to determine learning in class. The results of the literature study show that the eXe-Learning application has advantages that can be used in making learning media, character planting is needed according to the curriculum and conditions in the field and it is also known that the material that needs strengthening is Newton's Law of Gravity and Kepler's Law. The results of the analysis of the needs of 22 students of class X IPA obtained that 86.4% did not have handbooks, 68.2% had difficulty learning physics. In fact, 86.4% enjoyed learning with the media. However, based on teacher information shows that the use of media in learning is still rare. And also as many as 90.9% want alternative teaching materials for learning physics and 95.5% agree if there is an electronic module of physics material that contains Islamic character values in it as a learning resource. This was also agreed by the teacher because of the madrasah-based school background. These results indicate that it is necessary to develop instructional media that contains Islamic character values in physics material.</p><p><strong>Abstrak:</strong> Penelitian ini dilakukan karena adanya tantangan pendidikan abad 21 yang menuntut siswa mahir dalam pembelajaran, melek digital, dan memiliki karakter yang kuat. Tujuan penelitian ini adalah melakukan analisis kebutuhan perancangan media pembelajaran fisika. Analisis kebutuhan dilakukan melalui studi literatur dan studi lapangan. Studi literatur dengan mengumpulkan informasi tentang media pembelajaran, pentingnya pembentukan karakter, dan pembelajaran materi fisika yang perlu diperkuat. Studi lapangan dilakukan dengan menganalisis pembelajaran di kelas. Hasil studi pustaka menunjukkan bahwa aplikasi eXe-Learning memiliki kelebihan yaitu dapat digunakan dalam pembuatan media pembelajaran, penanaman karakter dibutuhkan sesuai dengan kurikulum dan kondisi di lapangan serta diketahui juga bahwa materi yang perlu diperkuat adalah Hukum Newton tentang Gravitasi dan Hukum Kepler. Hasil analisis kebutuhan 22 siswa kelas X IPA diperoleh 86,4% tidak memiliki buku pegangan, 68,2% kesulitan belajar fisika, dan 86,4% menikmati pembelajaran dengan media. Namun berdasarkan informasi guru, penggunaan media masih jarang dilakukan. Sebanyak 90,9% menginginkan bahan ajar alternatif untuk pembelajaran fisika dan 95,5% setuju jika terdapat modul elektronik materi fisika yang memuat nilai karakter islami di dalamnya sebagai sumber belajar. Hal ini juga disetujui oleh guru karena latar belakang sekolah berbasis madrasah. Hasil tersebut menunjukkan bahwa perlu dikembangkan media pembelajaran yang mengandung nilai-nilai karakter islami dalam materi fisika.</p>

Prospects for testing the inverse-square law and gravitomagnetism using quantum interference

We examine a simple tabletop experimental setup for probing the inverse-square law of gravity and detecting eventual deviations therefrom. The nature of the setup allows indeed to effectively reach for shorter distances compared to what is allowed by other methods. Furthermore, we show that the same setup could also in principle be used to probe the interaction between gravitomagnetism and the intrinsic angular spin of quantum particles. Moreover, we show that the setup allows to have a gravitationally induced harmonic oscillator, introducing thus the possibility of studying in a novel way the interaction between gravity and quantum particles.

Torsion-induced gravitational $$\theta $$ term and gravitoelectromagnetism

Motivated by the analogy between a weak field expansion of general relativity and Maxwell’s laws of electrodynamics, we explore physical consequences of a parity violating $$\theta $$ θ term in gravitoelectromagnetism. This is distinct from the common gravitational $$\theta $$ θ term formed as a square of the Riemann tensor. Instead it appears as a product of the gravitoelectric and gravitomagnetic fields in the Lagrangian, similar to the Maxwellian $$\theta $$ θ term. We show that this sector can arise from a quadratic torsion term in nonlinear gravity. In analogy to the physics of topological insulators, the torsion-induced $$\theta $$ θ parameter can lead to excess mass density at the interface of regions where $$\theta $$ θ varies and consequently it generates a correction to Newton’s law of gravity. We discuss also an analogue of the Witten effect for gravitational dyons.