C.1.1 - window to a new world

• aristotle paved the way with using observation
• First microscope by Hans and Jensen

  • had 2 lens: eyepiece + objective lens
• Hooke developed 3 piece microscope which included light illumination
• Hooke saw empty chambers in a cork and called them cells
• Leeuwenhoek named cells animalcules
• Cells can be seen at 250x magnification
• total magnification = eyepiece x objective lens