1 Calories Burned For Walking: 4.6 km/h (13 minutes per km). 2  Calories Burned For Walking: 4 km/h (15 minutes per km). 3  Calories Burned For Walking: 3.15 km/h (19 minutes per km).
The first true hypodermic syringe was created by Alexander Wood in 1853. He modified a regular syringe, which at that time was used for treating birthmarks, by adding a needle. He then used this new device for introducing morphine into the skin of patients who suffered from sleeping disorders.
In the fifth century A.D, the tampons were created by Egyptian women from softened papyrus. In the year 1931, the first modern disposable tampons were created by an American, Dr. Earle Haas. The tampon is inserted into a wound or body cavity to absorb blood. It is made from a bulk of rayon or cotton or a mixture of the two.