The first type of telescope to be built was the refractor. It uses a lens to bend, or refract, light rays to a focus. Glasswork matured in Europe in the 16th Century and by the end of the century artisans had learned how to grind convex lenses that could magnify an image.
Please choose PRINT from your browser menu. Close Window. Lumps and Bumps on the Outside of the Foot. Written By: Dr. Kirk A. Koepsel, D.P.M. Description. There are a few causes of lumps, bumps or prominence on the outside of the foot. Some of these are just normal anatomy; others are due to abnormal processes. Starting from the fifth toe and working back to the heel: A common prominence on the fifth toe is due to the formation of a hammertoe.
Little itchy foot bumps. I have weird bumps on the bottom of my feet. They aren't there all the time and not usually more than 3 or 4 at a time. It feels like it is a little tiny BB deep inside and it gradually works it's way out to the skin. While it's inside it hurts when walking but if I push on it with my fingers it itches like crazy.