Microscopes Flashcards
(32 cards)
When was the first microscope developed?
final years of 16th century
Where was the first microscope developed?
England
How was the first microscope discovered?
by accidentally inverting a telescope
Who discovered that a combination of two lenses (ocular and objective) enlarges an object that could be seen?
Zaccharias Jansen and his son Han
When was the compound microscope modified and by who?
17th century; Robert Hooke
Who realized that lenses with very short focal lengths were the key to more magnification?
Robert Hooke and Anthony van Leeuwenhoek
Who discovered animalcules, or bacteria?
van Leeuwenhoek
What do you use when making a microscopic drawing?
pencil
Where do you label in a drawing?
Outside the FOV
How do you determine the total magnification?
multiply the power of the objective times ten
total magnification on low power
40x
total magnification on medium power
100x
total magnification on high power
430x
Largest field of view
low power
Smallest field of view
high power
When looking at something through a microscope, it will appear upside down.
True
When looking at something through a microscope, it will appear reversed.
True
Why does something appear upside down and backwards?
because of two sets of mirrors in the microscope
When moving something under the microscope to the right, it will appear to move to the . . .
left
What is magnification?
Magnification is the image getting bigger.
What is resolution?
Resolution is how clear the image is.
What is a simple microscope?
microscope with one lens
What is a compound microscope?
microscope with two sets of lenses
What is an example of a compound microscope?
our microscopes
