In this video we are going to do a scientific experiment in my kitchen involving a pint glass, some sandy gravel I collected from the river and digital scales. The results from these measurements will be used to calculate the porosity (n), specific yield (Sy) and specific retention (Sr) of the sandy gravel.

00:00 Introduction
00:16 Definition of porosity
01:54 Definition of specific yield
03:28 Definition of specific retention
05:18 What specific retention looks like
05:27 Porosity = Specific Yield + Specific Retention

This is the second of two videos about a sandy gravel.
You can see the first one is here:    • Hydrogeology 101: Density & Porosity ...  

#Porosity #SpecificYield #SpecificRetention