Happy (Belated) Winter Solstice!
The day the sun stands still, as the etymology says. Some ancients thought — sensibly enough in context of the knowledge and methods humans had …
Astronomy
Conic Sections and Projectile Motion
A diagram that shows how a projectile around the earth would go from a semi-parabola to a circle around the earth to an ellipse, and …
Trundholm Sun Chariot
“The Trundholm sun chariot pulled by a horse is a sculpture believed to be illustrating an important part of Nordic Bronze Age mythology. The sculpture …
Galileo Quote on Aristotle and Epistemology
“I should even think that in making the celestial material alterable, I contradict the doctrine of Aristotle much less than do those people who still …
Logic For Future Scientists
In this course, focused on scientists and future scientists but also for engineers or anyone who wants to know science, we will learn logic and …
Inquiring-mind Science: How Did Kepler Discover Elliptical Orbits?
In this class, we will learn how Kepler figured out that the planets moved in elliptical orbits about the sun. Enroll on Outschool, or contact …
Inquiring-mind Science: How Far Is the Sun? How Far Are the Planets?
In this class we will learn how to reason out and calculate how far the sun is from the earth and how far planets are …
Inquiring-mind Science: How Far Is the Moon?
Enroll on Outschool, or contact me to set up a course for you, a small group, or your school. We will do the calculations to …
Inquiring-mind Science: How Big Is the Earth?
We will learn how science works by seeing how to figure out the size of the earth. Enroll on Outschool, or contact me to set …
Happy Winter Solstice! (Approximately.)
The day the sun stands still. The etymology is here: https://www.etymonline.com/word/solstice Some ancients thought — sensibly enough in context of the knowledge and methods humans …