Summary
Summary Types of Microscopes
- Module
- Module 2 Chapter 2
- Institution
- OCR
Summary of types of microscopes
[Show more]
Seller
Follow
Content preview
Types of microscopesFirst review @September 12, 2023
Practise Q's Done
Transmission Electron Microscope (TEM)
a beam of electrons is transmitted through a specimen
the beams are focused to produce an image of the specimen
TEM’s have a magnification of x5,000,000 and a resolution of 0.1nm
microscope has very good quality
TEM’s can only view dead organisms
this is because electron microscopes rely on staining to create a contrast so that the
specimen can be viewed in more detail and so that organelles and cells can be
distinguished and identified
Scanning Electron Microscope (SEM)
a beam of electrons are sent across the surface of a specimen, rather than being
transmitted through them
this is called topography
only an image of the outside of the cell is produced
SEM’s have a magnification of x5000 and a resolution of 10nm
SEM’s can also only view dead organisms because they are a type of electron microscope
Laser Scanning Confocal Microscope
a single spot of light is moved across a specimen
the parts of the specimen that are stained with a dye will emit fluorescent light which will
be detected
this reflected light from the microscope is focused onto the detector by a confocal
pinhole
only the light radiated from the distance that gives the sharpest focus is detected
Types of microscopes 1
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller estherokoruwa3009. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £3.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
48041 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 15 years now