'It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you.'

- when asked about his 1909 experiment, E. Rutherford explained how he demonstrated that alpha particles could be scattered backwards when directed at a thin…

Marie and Pierre Curie in their laboratory edition of Le Petit Parisien newspaper, January 1904 ✍️

Impeccable water sketches by Leonardo Da Vinci ✍️

The soul of man is divided into three parts: 💭

• intelligence,
• reason, and
• passion.

Intelligence and passion are possessed by other animals, but reason by man alone.

Some important symbols in calculus ✍️

In your opinion, what is the strangest thing about the universe? ✍️

Our situation on this earth seems strange. Every one of us appears here involuntarily and uninvited for a short stay, without knowing the whys and the wherefore. In our daily lives we only feel that man is here for the sake of others, for those whom we love and for many other…

The Story of the Sun, Moon, and Stars by Agnes Giberne (1898) ✍️

Wolfgang Pauli writing on blackboard at the time of his induction as a foreign member of the Royal Society, April 1953.

Can you guess what he is writing on the chalkboard? ✍️

📷 Keystone Photopress

Niels Bohr lecturing in Iowa, 1950. Photographed by Des Moines Register.

Mention one opinion about tech that you’d defend like this ✍️

'Any fool can know. The point is to understand.'

-- A. Einstein (1879 - 1955)

Although penicillin was discovered in 1928, it wasn't until World War II that its production was significantly ramped up. The war necessitated large-scale production of antibiotics, leading to advances in fermentation technologies.

Karl Popper on misery and happiness 💭

During World War I, both the Allies and the Central Powers used wireless telegraphy extensively. This was one of the first major uses of wireless communication in warfare, leading to significant advancements in radio technology and also in cryptographic techniques for securing…

The genuine rationalist does not think that he or anyone else is in possession of the truth; nor does he think that mere criticism as such helpsus achieve new ideas. But he does think that, in the sphere of ideas, only critical discussion can help us sort the wheat from the…