Hydrogeology 101: Porosity, Specific Yield & Specific Retention of a Sandy Gravel

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 of a ...   #Porosity #SpecificYield #SpecificRetention