How to tell if the loaf of bread in your oven is cooked? You can see the outside is nicely browned, but you can’t see the middle – is it doughy still? Give it a tap and listen. If it sounds hollow then it’s ready. The sound of the tap passes through cooked bread differently than through… Continue reading The Constitution of the Interior of Earth, as Revealed by Earthquakes
Category: history of science
Quintessence: echoes across science
I’ve been reading up on the story about cometary material found in Libya (odd pebble is cometary material fallen to earth). My plan to write about it myself has run into the desert sands – I have nothing new to add. However reading the source paper has taken me off on a tangent, inspired by the… Continue reading Quintessence: echoes across science