resolving power
Noun
Meaning
the ability of a microscope or telescope to measure the angular separation of images that are close together
Source: WordNetSynonyms
Antonyms
Hypernyms
Examples
It is an old story in physics that higher resolving power leads to new effects.
Agarose gel has lower resolving power than polyacrylamide gel for DNA but has a greater range of separation, and is therefore used for DNA fragments of usually 50-20,000 bp in size.
Polyacrylamide gels are usually used for proteins, and have very high resolving power for small fragments of DNA (5-500 bp).
This comes at the cost of transmission, for example to distinguish Iron from Argon by take a resolving power of 10,000, which may reduce the Iron transmission by around 99%.