My Science & Epistemology Researches
Post relating to personal considerations or studies.
A short essay on Time in classical science.
A personal perspective, not just an epistemological one.
It’s part of a work developed on the epistemology of time, and it’s written in italian.
Brussi 2024_Panoramica sul tempo nella scienza classica
My introductory study of galactic dynamics, particularly on the so-called “disk heating”, with a review of the underlying theories.
Brussi 2024_An overview on disk heating
We derive the II Jeans equation (the Jeans equations are a set of partial differential equations that describe the motion of a collection of stars in a gravitational field) from the collisionless Boltzman equation (CBE) in cylindrical coordinates.
Brussi 2024_Jeans equation in cylindrical coordinates
An in-depth analysis that derives the photon distribution function, known as Planck’s distribution or black body law, in two different ways.
Written in italian
Brussi 2023_Funzione di distribuzione dei fotoni
An easy introduction for laymen on what redshift is, written in italian.
Brussi 2023_Note for laymen – Redshift
This work is a further study of Albert Einstein’s article, “Emission and Absorption of Radiation in the Quantum Theory” (Strahlungs Emission und Absorption nach der Quantentheorie). A brilliant work published in 1916.
This work of mine is written in Italian.
Brussi 2023_Einstein 1916 Emissione e assorbimento di radiazione
ABSTRACT
Albert Einstein’s study, “Emission and Absorption of Radiation According to Quantum Theory,” [Einstein, 1916], proposed an original interpretation for the probabilities of exchanges between atomic energy levels, predicting spontaneous emissions, as well as absorption and radiation-stimulated emissions, from molecules in thermodynamic equilibrium. This study made the coefficient associated with spontaneous emissions Aji, the absorption coefficient Bij, and the coefficient associated with stimulated emissions Bji famous; it also laid the theoretical foundation for the development of lasers.
In-depth analysis: a paraphrase of the conjectures in Einstein’s original publication, an in-depth analysis of the parameter associated with the coefficients called the oscillator strength (derived with different procedures for both spontaneous emission and absorption of radiation), and some examples of the use of Einstein’s coefficient Aji in astronomical spectroscopy.
A brief look at the conjecture on the unreality of time of Kurt Gödel (1906-1978).
It’s a work developed to complement another on the epistemology of time, and it’s written in italian.
Brussi 2023_Congettura di Gödel sull’irrealtà del tempo
An in-depth analysis of the relativistic and mathematical consequences of a modified special theory of relativity, without taking Einstein’s postulate about the constancy of the speed of light in a round trip for granted.
It’s a work developed to complement another on the epistemology of time and it’s written in italian.
Brussi 2023_Sul postulato della velocità unidirezionale della luce
A short essay on Epistemology of scientific research, a personal elaboration.
It’s part of a work developed on the epistemology of time, and it’s written in italian.
Brussi 2022_Epistemologia della ricerca scientifica
It’s a work developed to complement another on the epistemology of time, and it’s written in italian.
Brussi 2022_Presentismo ed eternalismo
