Galileo Galilei (1564-1642) â Astronomer and Scientist. Galileo developed a superior telescope and made many significant discoveries in astronomy.He was sentenced to life imprisonment by the inquisition for his support for the Copernican theory that the sun was at the centre of the solar system.alileo Galilei (1564-1642) â Astronomer and Scientist. Galileo developed a superior telescope and made many significant discoveries in astronomy.
Virtually all particles in the air have a positive charge, while negative ions have a negative charge. In which case, negative ions and particles magnetically attract to one another. When there is a high enough concentration of negative ions in the air, they will attract to floating particles in large numbers.
If an atom loses an electron, it has one more proton than electron, giving it a net positive charge. An ion with a net positive charge is called a cation. If an atom gains an electron, then it has one more electron than proton, giving it a net negative charge. An ion with a net negative charge is called an anion. Learn more about Atoms & Molecules