Summary
In the podcast episode of "Things You Thought You Knew," hosts discuss various intriguing and complex scientific concepts in an engaging and enlightening manner. With guest Neil deGrasse Tyson, the episode covers topics such as the difficulty in measuring gaseous objects, determining the edge of the atmosphere, dimensions of the Sun, differences between an astrophysicist and a photographer, the transition from incandescent bulbs to LEDs, and the science behind airplanes' banking turns.
The episode begins by discussing the challenge of measuring gaseous objects as opposed to solid ones, due to the lack of definite boundaries. As the conversation progresses, the hosts delve into the concept of the atmosphere and its thinning nature the higher one goes. The Carbon line, situated between 85 and 100 kilometers, serves as the transition into space. However, the atmosphere continues for thousands of miles out. The dimensions of the Sun also vary depending on the wavelength of light in which it's viewed (ultraviolet, visible, infrared, and x-rays).
The differences between being an astrophysicist and a photographer are highlighted concerning glowing objects and the temperature-dependent energy emitted. The hosts then discuss the benefits of transitioning from incandescent bulbs to LEDs, noting their efficiency, cost-effectiveness, and ability to emit only visible light.
A fascinating segment of the episode revolves around airplanes and banking turns. Computer-flying airplanes are capable of maintaining passengers' balance during turns, requiring precise calculations and execution. This intricate process is likened to the banked turns used in NASCAR.
The podcast also delves into the forces that act on different vehicles during turns: cars are turned by the road, airplanes bank on a cushion of air, and spacecraft require firing rockets to change direction. A lively discussion ensues on the inaccuracies observed in Star Wars and Millennium Falcon maneuvers as they don't accurately represent movements in space.
Comparing the scientific accuracy of Star Wars and Star Trek, the hosts note that Star Trek often considers scientific concepts like shuttle bays with tractor beams. In contrast, Star Wars leans more towards theatrics over scientific accuracy.
The hosts and Neil deGrasse Tyson emphasize the importance of learning and challenging oneself with new information. They appreciate the knowledge sharing and understanding that comes from such engaging discussions, ultimately showcasing the significance of gaining knowledge as an essential part of one's purpose in life.
