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.
An ion is a charged particle, such as Na+, the sodium ion. It has a positive charge, because it is missing one electron. Other ions, of course, are negatively charged. Cells have membranes that are made of lipid molecules (fats), and they prevent most things from entering or leaving the cell. But all over a cell membrane are proteins that stick out on both sides of the cell membrane. Some of these are ion channels.