It has been said time and again, that an observer who falls into a black hole will not notice anything special. Is this really true?
There is of course the problem with the tidal forces, but I assume that these can be lowered beyond any limit by making the black hole big enough, right?
But what if I take a cigar-shaped spaceship and let it free-fall into a black hole? There will be a moment, where the head is already inside, but the tail is still outside. This of course requires some increase in gravity along the axis of the spaceship, but this increase can be so small, that an observer won't have to worry about it, but still the event horizon will be inside the spaceship.
Now the obeserver could send a light beam from the head to the tail of his spaceship and have it reflected there. Since the observer is in free fall and tidal forces are minimal, I would expect that the beam would just bounce back. This would be in line with the statement, that he does not observe anything special.
However that cannot be true, because he has just sent a beam of light across the event horizon.