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How was the BONE NEEDLE invented?
Sharpened bone
John Napier invented the Napier's Bone
The needle-like threads of spongy bone are called trabeculae. These structures help provide support and strength to the bone while also allowing for the passage of blood vessels and bone marrow. Trabeculae help distribute forces and maintain the structural integrity of the bone.
Benjamin rubin
bob wormanhiemer
Marlene Miller
900,000 b.C
The astatic needle was invented by John Leslie in 1804. It improved the accuracy and sensitivity of early galvanometers used in scientific experiments.
They were used for weaving and sewing.
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The syringe needle was invented in the United States by Charles Pravaz and Alexander Wood in the mid-19th century. They developed the concept of a hollow needle attached to a syringe for medical injections.