The force of gravity doesn’t exist?!

Remember the story about Isaac Newton seeing an apple falling from a tree and discovering gravity? Of course, and ever since, it has seemed clear that there a force called gravity which pulls objects down towards the earth – the apple falls to the ground or when you jump you land back down. But it turns out there is no such thing as this force of gravity.

Continue reading “The force of gravity doesn’t exist?!”

The sentence with most information

The supremely entertaining and smart physicist, Richard Feynman, was once tasked to giving introductory physics lectures to Caltech students. Feynman being Feynman started by posing this question:

“If, in some cataclysm, all of scientific knowledge were to be destroyed, and only one sentence passed on to the next generations of creatures, what statement would contain the most information in the fewest words?”

Continue reading “The sentence with most information”