The interplay between science and religion has gone through difficult times, with violent episodes and scientists risking their lives when their theories collided with the religious beliefs of the time. We only need to remember […]
In this post we will talk about boundaries: open and closed; fixed, free and mobile. What is a boundary? According to the Cambridge Dictionary, a boundary is a real or imagined line that marks the […]
Let us revisit the Navier-Stokes equations and the millennium problem (discussed in a previous post). The equations and additional conditions are $$ \left\{ \begin{array}{l} \displaystyle \rho_0 \left( \mathbf{u}_t + (\mathbf{u} \cdot \nabla)\mathbf{u} \right) – \mu […]
In this short entry we will revisit the issue of infection rates in the third wave of covid-19 (see previous post). In that entry we proposed a method to estimate the infection rate using the […]
Those who have read Bertrand Russell will be familiar with the ironic, very British touch that often appears in his texts. A very varied irony, ranging from the coldest to the most acidic (and on […]
In the mid-17th century, Europe experienced the last epidemics of bubonic plague. In Seville the main crisis occurred in 1649 (and which is so well recreated in the TV series by Alberto Rodríguez and Rafael […]
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