The ruler is thin by the edges so that the markings can be easily compared with whatever is being measured. It is thick in the centre so that it does not snap too easily.
the centimetre ruler
thicker at the edges that in the middle
thicker, thinner
thicker at the edges that in the middle
arteries.
A slice of pizza.
Concave lens. Concave lenses are thinner in the middle and thicker at the edges, causing light rays to diverge. Convex lenses are thicker in the middle and thinner at the edges, causing light rays to converge.
Concave. The opposite- thick in middle, thin at edges- is convex.
it is a convex lens .
Because when you pour batter into the pan, the batter diffuses, or spreads out. While cooking, it thins and the edges are thinnest because diffusion isn't done finding a balance. The middle is still thicker because of the process of diffusion isn't done, so it will be thicker in middle naturally. Hope this helps! :-)
A convex lens is thicker in the center. This type of lens bulges outward in the center and is thicker at the middle than at the edges. Concave lenses, on the other hand, are thinner in the center.
They are convex lenses.