This means that Eratosthenes estimated the circumference of the Earth to be about 40,000 km. He also knew that the circumference of a circle was equal to 2 times Ï (3.1415...) times the radius of the circle. (C = 2Ïr) With this information, Eratosthenes inferred that the Earth's radius was 6366 km.
Ankylosing spondylitis is a form of chronic inflammation of the spine and the sacroiliac joints. The sacroiliac joints are located at the base of the low back where the sacrum (the bone directly above the tailbone) meets the iliac bones (bones on either side of the upper buttocks) of the pelvis.
Ankylosing Spondylitis. Ankylosing Spondylitis. Ankylosing Spondylitis is a progressive autoimmune disease, which causes inflammation of and arthritic reactions to the spine and large joints.We believe that natural supplements combined with gentle exercise and a good diet are the best possible treatment method.nkylosing Spondylitis. Ankylosing Spondylitis. Ankylosing Spondylitis is a progressive autoimmune disease, which causes inflammation of and arthritic reactions to the spine and large joints.