How to pronounce “radius of curvature” in English

And now we have the radius of curvature, and that then tells us the focal length.

And now we can use those formulas and adjust the radius of curvature, the bulginess to de-warp the image by different amounts

Here, from my Scientific American article is a way to visualize the difference in the radius of curvature and, hence, the focal lengths of the purported projection

So this is a tool that we built that allows us to compress these devices and measure the radius of curvature of the electrodes.