The force of attraction increases as an electron and a proton approach each other. And it varies inversely as the square of the distance between the particles. The electron and the proton have a negative electrostatic charge and a positive electrostatic charge respectively. Each charge-and the force associated with that unit of charge-is constant-and equal.
There are pools/baths dating as far back as the Ancient Greeks and Ancient Egypt however I believe there would have been something far more prehistoric than this (albeit far less advanced). The first heated swimming pool was built by Gaius Maecenas of Rome in the first century BC. Gaius Maecenas was a rich Roman lord. The great bath at the site of Mohenjo-Daro was most likely dug during the 3rd millennium BC. This pool is 12 by 7 meters, is lined with bricks and was covered with a tar-based sealant.
Swimming has been around since the caveman days concluded by evidence of pictures drawn on cave walls. Competitive swimming appeared at the first modern Olympics in 1896 in Athens but started in the earlier 1800's.here is evidence that swimming was also a very popular sport in Gr â¦ eece and Italy in the original Olympic Games. In 1538, Nicolas Wynman, German professor of languages, wrote the first swimming book.