Astronomy

Eclipse - lunar/solar

tide

phase of moon

location of moon

angle of sunrise

Solstice / equinox

Analemma

Wright Brothers

 1. "the Wrights calculated they needed an engine that produced at least 8 horsepower and weighed no more than 200 pounds (91 kilograms)."

            No such engine was available in the market, so they designed/and made one

            They choose aluminum... They painted black - so people did not know the metal (avoid copy)

2. Propeller: Navy's propeller designs were "cut and try". 

They used the wind tunnel. 

"propeller was a wing traveling in a spiral course".

"90 pounds of thrust to sustain the Flyer in flight at 24 mph" - "combined thrust of between 120 and 130 pounds at 330 rpm"

3. wind tunnel

4. "a highly unstable but controllable machine" (Like Bicycle, flights too...)

No Patent

Few reasons

1. Altruism and the Public Good
2. Encouraging Innovation
3. Financial Constraints
4. Open-Source Movements

Examples:

1. Wilhelm Conrad Roentgen (X-rays)
2. Nikola Tesla (Alternating Current)
3. Charles Babbage (Difference Engine)
4. Sir Tim Berners-Lee (World Wide Web)
5. Linus Torvalds (Linux)
6. Richard Stallman (Free Software Movement)
7. The Raspberry Pi Foundation (Educational Devices)
8. The Wright Brothers (Airplane)
9. Thomas Edison (Phonograph)
10. Open Source

Marie Curie - "There were no patents. We were working in the interests of science. Radium was not to enrich anyone. Radium... belongs to all people."

Apollo-11

The Virtual AGC Project Gemini — Apollo — Shuttle

Apollo 11 guidance computer Github

Virtual Apollo Guidance Computer Github

DSKY - display/keyboard

AGC - Apollo Guidance Computer

CM - Command Module (Colossus) software

LM - Lunar Module (Luminary) Software

https://www.youtube.com/@CuriousMarc