The holographic principleOver the last few decades physicists have been developing a curious idea. Perhaps the world we inhabit is a hologram, lacking a crucial feature of the world as we perceive it: the third dimension.
e for exponentialAt the beginning of an epidemic the number of infected people grows exponentially. But why does the number e appear in descriptions of this growth?
The doubling time of a diseaseThe doubling time of a disease is the time it takes for the number of cases of the disease to double. How do you calculate it?
R and herd immunityWhat is herd immunity and what does it have to do with a number called R?
Maths in a minute: AlgorithmsThe word "algorithm" has probably got more usage over the last few years than it has in its entire history. But what exactly is an algorithm?
