Who came up with the names of the seven notes?
The notes in music graphically represent distinct sounds, and a musical composition right combines sounds. Notes are very...
Why do we need starch?
Patented in the U.S. in 1841, this product quickly took its place in our kitchens. Any stay-at-home parent...
What is tin and what does it do?
Tin, a soft white metal, was one of the first metals that humans learned to work with. Scientists...
What is nitrogen and what is it used for?
Nitrogen is a chemical element with atomic number 7. It is an odorless, tasteless, and colorless gas. Therefore,...
What is lead and where is it used?
Lead (Latin for plumbum) is a chemical element, a metal with atomic number 82. In its pure form,...
The treadmill was invented to punish criminals in England
Most people involved in fitness are familiar with the concept of the treadmill. In modern parlance, a treadmill...