Summary
Summary Calibrating microscopes
- Module
- Unit 2 - Cells
- Institution
- AQA
Year 1 Biology AQA A level notes. Achieved an A* in my final exam using these notes. They are based on the mark scheme requirements.
[Show more]
Seller
Follow
Content preview
Microscopes summary notes29 September 2022 12:52
Graticule
- Graticule is small disc that has an engraved ruler-
on the eyepiece of the microscope
- Does not move when you move specimen
- Size does not change when you change the
objective lens
- One division of the eyepiece represents a
different length depending on magnification
Stage Micrometre
- Slide with a scale marked on it
- Placed on stage of a microscope
- Usually 1mm long and marked in hundredths
- Used to find out how many micrometres each
graticule unit represents
Calibrating:
- Specimen removed from stage and replaced with
stage micrometre
- Use scales together to work our each graticule
unit
- Graticule then used as a ruler in the field of view
Method:
- Place a stage micrometer on the stage of the
microscope.
- Line up one of the divisions on the eyepiece
graticule with a fixed point on the stage
micrometer.
- Count the number of divisions on the eyepiece
graticule that correspond with a set
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 arabellasherratt. 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)
75759 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now