An abyssal hole, void of any values. In Binary it is 0, in Hexadecimal it is 0x0, in words it is " ", and in life, it's me.
I code, so that's why there are Computer Science terms in there. binary is 0s and 1s, while hexadecimal is 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 etc etc. both are numbering systems. Null is a piece of data that can be applied to some or most variables, try to figure out what NULL's value is, its in the name per-se.