Evangelista Torricelli,  Italian physicist and mathematician who invented the barometer.He did this in in 1643.

The value of tulips during the Dutch Golden Age in the 17th century increased so much that people began using them as a currency themselves. There are records of entire homes being sold for not yet bloomed tulip bulbs.

Scurvy is the name for a vitamin C deficiency. It can lead to anemia, debility, exhaustion, spontaneous bleeding, pain in the limbs, and especially the legs, swelling in some parts of the body, and sometimes ulceration of the gums and loss of teeth.