Single.Epsilon Field: Represents the smallest positive Single value that is greater than zero.

  

using System;

public class Example
{
   public static void Main()
   {
      Console.WriteLine(Single.Epsilon);
   }
}

1.	Format a float number in ToString method
2.	Int and float value
3.	Using Floats
4.	Format float as decimal
5.	Output float number as currency
6.	Format float number as scientific notation
7.	Format float point value as fixed point
8.	Use general format to output a float point value
9.	Output float point as Hexadecimal
10.	Round trip float point value
11.	Format float as percent value
12.	Format float point value as number
13.	Tests whether two float/double values are equal, within an acceptable margin of difference.

Single.Epsilon Field: Represents the smallest positive Single value that is greater than zero. : float « Data Types « C# / C Sharp