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.
The stick barometer was the first made as a scientific instrument. As the popularity of the barometer grew so did their decoration and attractiveness and were considered prize pieces of furniture as well as being useful. The wheel barometer was devised around 1663 but gained popularity in the 1770âs.