Galileo Galilei-Galileo (1564-1642) was the most successful scientist of the Scientific Revolution, save only Isaac Newton. He studied physics, specifically the laws of gravity and motion, and invented the telescope and microscope.
1 Stools that are black, tarry, or bloody.  You recognize symptoms of chemical or toxin food poisoning, such as vomiting, diarrhea, sweating, dizziness, tearing in the eyes, excessive salivation, mental confusion, and stomach pain, beginning about 30 minutes after eating contaminated food.
Typically, food poisoning symptoms will occur several hours after eating contaminated food, but in some instances they can develop up to a week later or more. While most cases of food poisoning resolve in two to four days, some instances can last for weeks or even months.