Tootfinder

What does it mean if an aircraft has a radar cross-section of 20 dB? #stealth #aviation

What does it mean if an aircraft has a radar cross-section of 20 dB?
In the Aviation Week issue of 15 February 1999, David A. Fulghum wrote the following in the article “JSF Reflection Is Golf Ball-Sized” on page 27: The overall goal of the JSF program is to produc...

from my link log —
Rubik's cube perfect scramble.
https://www.solutionslookingforproblems.com/post/the-rubik-s-cube-perfect-scramble
saved 2025-08-02

The Rubik's Cube Perfect Scramble
The ChallengeI was playing with my son’s Rubik’s Cubes and tried to scramble a cube randomly so that no two squares with the same color were side by side. Here’s one way to do it: But I wanted a scramble that looked like a random scramble. No matter how many different moves I made, I couldn’t do it. Every time I separated two squares with the same color, two other squares of the same color would touch somewhere else.Looking for an easy answer, I went to puzzling.stackexchange.com and fo…

@… is a large amount of inactive memory necessarily a problem?
https://wiki.freebsd.org/Memory