EVERYDAY SCIENCE

Detailed explanation-1: -Human bone is as strong as steel but 50 times lighter. Human fingers stretch and bend about 25 million times in a normal lifetime.

Detailed explanation-2: -Nature has been optimizing our bone structures for millennia. Bone typically has an elastic modulus that is like concrete but it’s 10 times stronger in compression. As for the stainless-steel comparison, bone has a similar compressive strength but is three times lighter.

Detailed explanation-3: -Roughly speaking, human bone is about five times stronger than steel if both of them have the same weight. If you take a bar of steel of the same size as a piece of bone then you’ll see that the bar of steel is about three to five times heavier than the bone.

Detailed explanation-4: -Healthy human bone is extraordinarily strong. One cubic inch of bone can, in principle, bear a load of 19, 000 lbs.-roughly the weight of five standard pickup trucks-making it about four times as strong as an equal weight of concrete.

Detailed explanation-5: -Bone is a living, growing tissue. It is made mostly of two materials: collagen (KOL-uh-juhn), a protein that provides a soft framework, and calcium (KAL-see-uhm), a mineral that adds strength and hardness. This combination makes bone strong and flexible enough to hold up under stress.