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
Any disease or infection that is naturally transmissible from vertebrate animals to humans and vice-versa is classified as a zoonosis according to the PAHO publication Zoonoses and communicable diseases common to man and animals. Zoonoses have been recognized for many centuries, and over 200 have been described.