Welcome to Dr. Kate Brilakis' Learning Portal
The Microscope
cocci bacilli spririla
your cheek cells
bacterial cell shapes and orientations
the optical oil forms an interface between the slide and the objective,
reducing extraneous light and sharpening image
pond water
as magnification increases, the area of the field of view decreases
very cool electron scope images
diplo = two
strepto = chain
staphlo = cluster
when viewing a living specimen, keep your light low...
light = heat
and a strong light will will fry the little guy ;(
using oil immersion lens
at 1000X total magnification
total magnification =
ocular magnification
X
objective magnification
always start to focus using the lowest magnification
preparing a
wet mount slide
plant cells
--->
as magnification increases, your light intensity decreases so you should open your iris to add light