CBE 30355 - Lecture Notes - Aug. 20, 2020
Announcements
Class notes
Read through pages 38-50 of the notes and view the online narration below. Don't forget to complete the quiz in Sakai!
The main points of the lecture were
- Hydrostatics
- Lagrangian and Eulerian Descriptions
Goals:
After this class you should be able to:
- Calculate pressure distributions in fluids at rest.
- Distinguish Eulerian and Lagrangian descriptions of fluid motion.
Reading
- The class notes.
- BS&L chapter 1
Additional Readings:
In class we talked about the fraction of an iceberg which was below the waterline. Since the part above the waterline collects dirt, debris, and snow you get the usual "white" iceberg. Every so often, one flips over. To see what the underside looks like, go here.
Demonstration:
In class today we demonstrated how you can use Archimedes Law to measure the density of an object using a scale, a thread, and a beaker of water. Although it isn't clear -exactly- what happened way back when, the legend is that Archimedes developed the idea to determine whether a goldsmith was honest in making a crown for the king, or whether he substituted in a base metal for a fraction of the gold (pocketing the rest).
David.T.Leighton.1@nd.edu