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.
Symptoms and signs of food poisoning show up earlier (2 hours up to a couple of days) in comparison to the stomach flu in which symptoms may take 4 hours up to 48 hours (2 days) before symptoms begin. Medical treatment for the stomach flu and food poisoning generally is not necessary.