10: The Earth

Equinox

English - April 22, 2020 21:53 - 59 minutes - 41.8 MB
Earth Sciences Science Life Sciences astronomy biology discoveries experiments historical innovation practical science research science technology Homepage Download Google Podcasts Overcast Castro Pocket Casts RSS feed

Previous Episode: 9: Christianity and the Environment: A Review of the Riot and the Dance

Next Episode: 11: Who is Dr. Rob Carter? Part I

In honor of the 50th Earth Day, Joe and Rob talk about...the earth! That is, the rock we call planet earth. They discuss some amazing experiments, done in the 1700s, that told us the mass of the earth and that calculated the gravitational constant. This is a big deal for us today, because there would be no space travel without these foundational experiments.

Kenyan top-bar hives, Warre beehives, Layens beehives (Rob’s choice)

What’s inside the earth? Solid rock. Not lava. 80% melt temperature. The core might be solid

The Oklo ‘natural reactor’, deep under Gabon, Africa

Mass of the earth: 5.972 × 10^24 kg

Density of granite

Schiehallion experiment, 1774

Nautical miles

Minutes and seconds of arc

Mass vs weight

Newton’s Second Law of Motion, F = ma

The law of gravity

Satellite laser range finding