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.
How long does food poisoning last Symptoms may progress rapidly, within a few hours or slowly over days to weeks. In most cases food poisoning is not serious, and has a self limiting course (runs its course in 24-48 hours). Noroviruses a common cause of food poisoning causes mild illness (often termed stomach flu) with nausea, vomiting, diarrhoea, abdominal pain, headache, and low-grade fever.