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yes!
A synonym for apart is "Separate".
It is the perpendicular bisector of AB, the line joining the two points.
It depends on the scale of the map.
apart disconnect away divide split detach
yes!
distinguish, separate, discriminate, contrast, tell apart
Yes
According to Wikipedia (see link), a human eye with excellent acuity can distinguish between lines that are 0.35 mm apart, held at a distance of 1 meter. That is 350 micrometres or 350,000 nm - somewhat larger than the 250 nm in the question!
differentiate, determine, separate, discriminate, judge, ascertain, tell the difference, characterize, mark, single out, set apart
If the numerical apertures of the condenser and low power objective lenses are 1.25 and 0.205 respectively and you are supplied with a filter that selects a wavelength of 521 nm then the answer is YES! 520/(1.25 + 0.25) = 347 nm and your two points in question are shorter in distance as they are only 330 nm apart.
Sometimes it is very hard to distinguish between a species where there is a lot of variation between that of a variation that is actually two separate species. Many times scientist disagree on how to tell these two things apart.
A synonym for apart is "Separate".
This is because their boiling points are close. Distillation is used to separate mixtures in which their constituents have boiling points that are relatively far apart. A better method would be fractional distillation which can be used to separate mixtures in which their constituents have relatively close boiling points.
separate
The correct spelling of the verb is distinguish(determine, tell apart).
The correct spelling is separate (apart, or to move apart).