How long can you sit in front of a connected laptop camera?
Until the laptop gives up the ghost
Is not it unhealthy because of the rays?
She has no rays
But I always gets very hot and dizzy when I turn it on!
That is not because of the camera
That's probably more psychic then.
A camera has no rays. It does not "send" (like a microwave or X-ray machine) but "receives".
In your case, until you fall over.