What is the science ibn al haytham was famuos for

In geometry, Ibn al-Haytham developed analytical geometry by establishing the linkage between algebra and geometry. Ibn al-Haytham also discovered a formula for adding the first 100 natural numbers. His contributions to number theory include his work on perfect numbers.

Works written: Book of Optics, Treatise on Light, ...

Place of death: Cairo, Egypt

Inventions: Pinhole camera

Profession: Scholar, Author

in 1948, swiss engineer/amateur mountaineer george de mestral went hiking in the woods with his dog. when they arrived back home, george found burrs stuck to his dog’s fur. this inspired him to create velcro.

explanation:

answer; round wood logs, building materials like (plywood),also pulp and paper products;