This could be trace evidence
Gold dust
Gemmaes.
Chain of custody log
You call the bits of soil sediment.
Substances in solution do not have solid bits unless the solution is already saturated.
8 Bits is one Byte. Half of a byte (4 bits) is a nibble.
asteroids belt
What do YOU call "no evidence?" If there is no evidence they can't charge you.
16 bits is a byte, for the record half a byte is called a "nibble". I kid you not...
chicken mic bites
Smaller rocks.
Datum