We started this series discussing the basic ingredients of the Universe: events, spacetime, causality. In the last chapter, we introduced massive objects (and thus, matter), which appear as a generalization of the so-called photon box.
As it moves, any […]
In the previous chapter of this series, we went over the subjective, relative separation of the network of events known as Spacetime into space and time. The speed of light played a major role in the discussion.
In particular, we […]
Author: Jaume Navarro is an Ikerbasque Research Professor at the University of the Basque Country
On April 10th 2019, the Event Horizon Telescope project released the first image ever of a black hole. Five simultaneous press conferences, […]
The division of past and future
In Part 1 of this series, we presented the empirical fact that under extreme circumstances, a certain observer’s past can be in another observer’s future. To explain this, we introduced the network of […]
Observations vs intuitions
Einstein’s Theory of Relativity introduced us to the concept of Spacetime, as a unified entity. This stands in contrast with the intuition that we develop since birth, which leads to naturally separate space and time.
Human intuition […]
As I mentioned in passing in my last entry, many, if not most, of the oldest stories about Christian martyrs and saints are nothing but legendary fabrications, something that scholars knew perfectly well since at least the time of […]
One book that has caused much stir in the past months is Catherine Nixey’s The Darkening Age: The Christian Destruction of the Classical World. I confess I approached the book with some skepticism, for ‘the classical world’, I thought, […]
In the two previous entries (1, 2) of this series I described the different diagnoses that Marina Garcés and Steven Pinker make of humanity’s current predicament, without concealing my sympathies for the latter’s: with up […]
We usually think of nature as existing completely independently of us and possessing a definite reality and behaviour even when we are not observing it. For instance, you assume that the world outside of the place where you are now […]
Are we in the best of the times, as Steven Pinker asserts? Or do we live in a ‘posthumous’ society, to say it with the favourite image of Marina Garcés? As I told in the previous entry, it is […]