Wisdom Builder
Quick Hits
MODE:
~
4 minutes
Classical Physics.
Quick Hits
10 random key ideas.
1.
Sound does not change pitch when it moves to a new medium. Frequency remains constant while speed and wavelength adjust, revealing the quiet coherence of nature.
2.
Quote:
- Heraclitus.
- 500 BCE.
Meaning:
Change is the only form of permanence that exists—first glimpsed by ancient thinkers, and now woven into the fabric of modern science.
3.
From History: 1842
In 1842, Christian Doppler wrote about the doppler effect in stars. It was first confirmed with sound in 1845, then with light in 1848. The big moment came in 1868 when, for the first time, we could tell which stars were coming and going.
4.
Multiple sound waves including both harmonic and overtone waves, as well as the attack and decay which is the shape of the waves individually and in aggregate.
5.
Quote:
- Carl Sagan.
- circa 1980.
Meaning:
Wisdom begins with perspective. We are are expressions of the universe. The particles making up your body are ancient, borrowed for a time from a universe much older than you.
6.
From History: 1848
In 1842, the Doppler effect was proposed by Christian Doppler. First confirmed for sound in 1845, then for light in 1848.
7.
With the motion of life, cause and effect feel certain. We see stable patterns. But Hume reminds you, correlation does not guarantee causation.
8.
Analog is the wave. Digital describes the wave. Analog mirrors the continuous shape, digital samples the shape. Most people do not hear a difference.
9.
Water doesn’t weaken a permanent magnet, but time eventually does.
10.
None. Both describe the same process of atoms or molecules gaining or losing electrons.
Done. Refresh for another set.