Rudolph Kippenhahn (1926–2020)

This was an average take on cryptography and code breaking that breaks up events into tiny snippets of text. It wasn't amazing or life changing, but it was originally in German, so the translators and author had to do some overtime for it to make sense in another language like English.

It covers most of the cryptographic achievements that I have heard of, with a thing on the Enigma Machine, a tiny section on Alan Turing, a bit of coverage on using codes to keep your online banking safe and show more other random Miscellanies. It organizes it by subject rather than time, but this is also fine. show less

This book smells. No, really. There is something wrong with the glue in the binding or something that makes the potential reader nauseous before any information can be conveyed. I have wondered before whether or not it is a useful book, but I have never managed to look at its insides for more than a minute at a time. Pee-yew!

Non-technical treatise on life and death of stars. Some of the information is out of date with current research but the basic information is still valid.

Un libro sobre astrofísica estelar que cuenta todo sobre la vida de las estrellas: formación, evolución y muerte, dependiendo de su masa. Nos hablan de quásares y púlsares, del diagrama H-R, de todos os conceptos básicos. Está muy bien explicado y es muy completo. Muy bueno.