This question already has an answer here:
Can you survive being sliced by an object if it is thin enough?
The following properties hold for this object:
- It is composed of a non-toxic, body-temperature material, equivalent in weight to carbon
- Its cross-section is as small as can possibly be, only 1x1 atom thick
- It is longer than the height of any human
- It is completely rigid
- It cannot be broken by any means
And for the circumstances to consider:
- Is it possible for this object to pass through a human without harming them?
- And if this statement holds, at what speeds does this statement hold true?
- Is there a minimum and maximum speed, which when crossed, the property no longer holds?
- Could it be a problem that the object has enough momentum to displace a human and kill it, rather than passing through it?
My thoughts are that, because human cells are much larger than an atom, and many individual cells can be damaged before a human is actually harmed, that it's possible to survive being hit by an object of this description.