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! :-)
thicker at the edges that in the middle
Concave. The opposite- thick in middle, thin at edges- is convex.
thicker, thinner
A slice of pizza.
thicker at the edges that in the middle
They can be either. They will converge if thicker in the middle than edges, and diverge if thinner in the middle than edges.
A convex lens is a curved lens in which the center is thicker than the edges. Convex lenses are thicker in the middle and thinner at the edges, causing light rays passing through it to converge at a focal point.
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.
A lens that is thicker in the middle than at the edges is called a convex lens. It is a converging lens that causes light rays to converge at a focal point.
A spoon that you have put some food into is a concave shape. It is a cavity. A concave lens is such that it is thicker at the edges than in the middle. Convex is the bottom of the spoon. A convex lens is thicker in the centre than around the edges.
No, the center of a concave lens is thinner than its edges. Concave lenses are thinner in the middle and thicker towards the edges, causing light rays passing through them to diverge.
Actually, a lens that is thinner in the middle than the edges is a convex lens, not a concave lens. Concave lenses are thicker in the middle and thinner at the edges, while convex lenses bulge out in the middle.