Before the James Webb Space Telescope, these little red dots had never been seen. Now hundreds of them appear in images from the telescope. They’re a cosmic enigma, one that started to appear roughly 650 million years after the Big Bang. https://t.co/8bu0Wa35kn
Decades ago, Hungarian mathematician Paul Erdős used randomness to illuminate the vast and weird world of networks. Today, mathematicians are making his technique even more powerful.
https://t.co/sccNL8nG1l
“If we have complete freedom to ask whatever question we want, well, what I want to do is find questions with beautiful answers.” Tune into this week’s The Joy of Why: https://t.co/dZOd6dT2on
Math Fun
Step 1:
Pick any three-digit number where all digits are different. For example let’s take: 532
Step 2:
Reverse the digits of 532 → 235
Step 3:
Now subtract the smaller number from the larger one: 532 − 235 = 297
Step 4: Now reverse 297 → 792
Step 5: Now add the original result and its reverse: 297 + 792 = 1089
The magic!
No matter which valid three-digit number you start with (as long as all digits are different), this process will always lead you to 1089.
812 double pendulums, each starting with almost the same tiny angle.
Watch chaos theory in action: tiny differences explode into total madness in seconds.