Virtual Human Reality

How The Cavendish Experiment Worked 🤔

In 1798, a scientist effectively “weighed” the Earth — without leaving his laboratory. The English scientist Henry Cavendish designed an incredibly sensitive experiment. Inside a quiet wooden shed, he hung a horizontal rod from a very thin wire. Two small lead spheres were attached to the ends of the rod. Nearby, he placed two much larger lead balls. Because of gravity, the large spheres slightly pulled the smaller ones. The force was extremely tiny — so small that the rod twisted by only a minute fraction of a degree. Yet that tiny twist held a big secret. By carefully measuring this small movement, Cavendish determined the strength of the gravitational attraction between objects. From this, scientists could calculate the mass of the entire Earth. His estimate was remarkably close. Cavendish calculated Earth’s mass to be about 6 × 10²⁴ kilograms, while modern measurements give 5.97 × 10²⁴ kilograms. Sometimes the biggest discoveries come from measuring the smallest forces.

INCREDIBLE: American Nathan Martin comes out of NOWHERE to beat Kenyan by 00.01 seconds in the LA Marathon — closest finish ever. “I could see the leader and with 800 meters to go, I was thinking, ‘I’m catching him.’” He finished 2h 11m 16.50s PATRIOT🇺🇸

🔥🚨BREAKING: A petri dish filled with human brain cells just learned to how to play DOOM Scientists at Cortical Labs have successfully trained a cluster of approximately 200,000 living human neurons, grown on a microelectrode array chip, to play the classic 3D video game DOOM.

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🧵 Farming robots are no longer experimental. They're deployed, profitable, and reshaping agriculture. In orchards, vineyards, vegetable fields, and beyond, they're tackling labor shortages, precision spraying, and chemical reduction at scale. This is how robotics is quietly becoming the backbone of next-gen agriculture [Save this thread for later 📌]

A declared regime change war of choice for "freedom" of the Iranian people. A regional war in a matter of hours. American lives at risk. A massive depletion of military stockpiles on behalf of Israel Most importantly: The most profound campaign betrayal in modern US history

Outside Anthropic's office in SF... intense moment!

🎂 Happy 1st birthday to Claude Code Thanks everyone for coming out and celebrating with us!!

Glyphosate’s worst nightmare.