As you can see from the above, an f stop of f/1.4 is really wide. It is letting a lot more light into the lens and ultimately onto the sensor than, say, f/8. Thus: The lower the f stop number, the wider, or bigger, the aperture. So, if someone tells you to âstop downâ, they are referring to decreasing the size of the aperture, which is achieved by increasing the f stop number.
A traditional method of providing temporary immunity for a person who is suspected of being infected (usually be an animal bite) with rabies is classified as passive artificial immunity Antibodies secreted in breast milk
1 The incubation period -- the period of time between exposure to a disease and the onset of clinical signs -- for rabies can vary greatly.2  The typical incubation period is three to eight weeks, but it can be as little as nine days or as long as several years in some rare cases. The incubation period -- the period of time between exposure to a disease and the onset of clinical signs -- for rabies can vary greatly.