SB1a - Microscopes Flashcards
Give the multiplication required to convert units from meter to millimeter
10 to the power of 3
Give the multiplication required to convert units from meter to micrometer
10 to the power of -6
Give the multiplication required to convert units from meter to nanometer
10 to the power of -9
Give the multiplication required to convert units from meter to picometer
10 to the power of -12
What level of magnification do light microscopes have?
Light microscopes allow for magnification of 1500x
How much more powerful are electron microscopes than light microscopes?
They are 1000x more powerful than light microscopes
Name all 6 parts of a light microscope.
Eyepiece
objective lenses
stage
diaphragm
illuminator / light
fine focus wheel
Compare and contrast the features of the light and electron microscope
The light microscope creates images using light whilst the electron microscope creates an image using electron beams.
Light microscope has a maximum magnification of 1500x whilst the electron microscope has a maximum magnification of 2000000x.
Light microscope has a Finest resolution of 0.1 micrometers whilst the electron microscope has a Finest resolution of 0.2 nanometers.
Light microscope can magnify both living and dead organisms whilst the electron microscope can magnify only dead organisms
Light microscope has a very low cost whist the electron microscope has a very expensive cost
What is Magnification?
Magnification is how many times bigger an object appears
What makes up the magnification of a microscope?
The magnification of the microscope depends on the magnifications of the
objective lens and the eyepiece lens.
State the formula for magnification
Magnification = Image size / Actual size
What is resolution
Resolution is the smallest distance between two points that can be separately
observed as two points.
