science

On the Theory of Scales of Measurement

Transmission Lines, Antennas and Wave Guides. Ronold W. P. King, Harry Rowe Mimno, and Alexander H. Wing. New York: McGraw-Hill, 1945. Pp. xv + 347. $3.50.
Science

Hearing the shape of an arena with spectral swarm robotics

Robot swarms classify arena shapes by estimating a global spectral signature from information exchanged between robots.

A 29-year-old who gave up income from nearly 50 courses. A 12-week blueprint for selling educational materials while working a job with 0 yen in advertising costs | Ha…

I want to start a side business using AI. But I can't decide what to sell, and even when I post, no one gathers. How can I ...

Earning $2,500–$4,000 a month selling courses. The story of a 29-year-old who walked away from it | Hackers Note #34

He had nearly 50,000 students worldwide and was earning $2,500–$4,000 (375,000–600,000 yen at 150 yen to the dollar) per month. Even so, he stopped managing the courses. The income from the courses gr ...