Sb1a Microscopes Flashcards
Most common number of lens in microscopes today
2x lenses ( objective lens and eyepiece lens )
Who used a microscope to discover cells
Robert Hooke in 1665
Equation for magnification of a microscope
Objective lens x eyepiece lens
What does the detail obtained by a microscope depend on
Detail obtained by a microscope also depends on its resolution
Resolution definition
The smallest distance between two points that can still be seen as two points
Electron vs light microscope differences
Electron microscope uses a beam of electron to formulate an imagine whereas light micro spices use light .
Electron microscopes have higher magnification and resolution however cannot be used to view living cells .
Measurements of microscopes
Millimetres 10^(-3) - mm
Micrometers 10^(-6) - μm
Nanometers 10^(-9) - nm
Picometer 19^(-12) - pm
Formula for magnification
M= i / A ( I = image / A = actual size of cell / M = magnification)
