Abstract The National Aeronautics and Space Administration's Deep Space Quantum Link
mission concept enables a unique set of science experiments by establishing robust …

Analysis of a four-dimensional displacement vector on the fabric of space-time in the special
or general case into two Four-dimensional vectors, according to specific conditions leads to …

Ongoing discussions on the nature of storage in visual working memory have mostly
focused on 2 theoretical accounts: On one hand we have a discrete-state account …

Background Albert Einstein first postulated the notion of gravitational time dilation in 1907
using the principle of equivalence. 5 He showed that the local time, τ, as measured by a …

We created an introductory physics activity for undergraduate students, consisting of
measuring the same physical quantity by different methods. This allows us to confront …

Special relativity, general relativity, and de Broglie-Bohm (pilot wave) theory are
explanations of fundamental aspects of nature. For the most part, special and general …

The global positioning system (GPS) must be familiar to every user of a smartphone as a
way to locate one's position on Earth to within several meters. The constellation of orbiting …

We created an introductory physics activity for undergrad students consisting in measuring
by different methods the same physical quantity. It allows to confront students with questions …

Abstract The United States' Global Positioning System (GPS), and similar geolocation
systems such as Galileo, GLONASS, and Beidou are used by people all over the globe …

M.Cattani (mcattani@if.usp.br) Institute of Physics, University of São Paulo, Brasil (I) Special
and General Relativity Page 1 1 TIME DILATION AND CONTRACTION IN GENERAL …