At the Edge of Infinity and Beyond
Aleph-null is the cardinality, or size, of the set of natural numbers, and is a ‘countably infinite cardinal’. Remarkably, whereas 1 + 1 = 2, 1 + aleph-null = aleph-null. The authors of this advanced maths explainer utilize plain English in an attempt to convey difficult mathematical concepts, including large numbers, higher dimensions, computation and primes, fusing historical, philosophical and anecdotal aspects of each concept with the decidedly technical. Slightly off-mint.
How Everything Moves, from Atoms and Galaxies to Blizzards and Bees
Why does it take so long for thick ice to form? How slowly do stalactites grow? How much lower is a bee's buzz than a mosquito's? Why can we see the flicker in old silent movies? The answers to such questions are revealed as astronomer Bob Berman explains the myriad movements that shape the universe, from the Sombrero Galaxy, which speeds away from us at 562 miles per second, to the oscillations of water molecules. Off-mint.