Cultures all over the world incorporate cumin into their cuisine, and it's often mixed with other spices for curry and taco seasoning. These recipes show how cumin's earthy flavor enriches everything from guacamole to vegetables to meat.
As with the shutter speed, the aperture also affects the sharpness of your picture, but in a different way. Changing the aperture changes the depth of field, the depth in a scene from foreground to background that will be sharp in a photograph.
The size of a change in aperture correlates with the exposure: the larger the aperture, the more exposed the photo will be. The best way to demonstrate this is by taking a series of photos, keeping everything constant, with the exception of the aperture.