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. Virus classification is the process of naming viruses and placing them in a 'family tree' in relation to other viruses.This process is different from the one used to classify plants or animals. Thanks to the fossil record, there are clear connections between most animals or plants.Viruses do not leave such a record, so it is more difficult to determine relationships between them.here are other classification systems that are based on the morphology of the virus or the disease caused. These systems are inadequate due to the fact that some diseases are caused by different viruses, the cold or flu are the most common example of this and some viruses look very similar to one another.