My personal revision guide for my GCSE's
contains:
- Maths
-Science (bio, chem and physics)
- English Language and Literature
It's important to make learning fun and that's what I want to do!
there will be mini stories (like the anime 'cells at wor...
I struggle with microscope stuff really bad, so this will be really basic until I can find a way to get better! Also remember these chapters aren't set in stone, they might be updated with new knowledge!
(I find some of this information from other sources, not always my head lmao)
But I do know, now, that the smallest thing humans can see is 0.04mm. However, we need a microscope to see the details of the thing we wanna see.
Most animal and plant cells are 0.01–0.10 mm in size
The unit we use to measure most cells is the micrometre, symbolμm
For some sub-cellular structures or organisms such as viruses, it is best to use a smaller unit: the nanometre, symbol nm.
To work out magnification:
Magnification= size of image/size of real object
/= divide btw
To work out total magnification :p
Total magnification = magnification of eyepiece × magnification of objective lens
So if an eyepiece had a magnification of x 10 and the objective lens has a magnification of, idk, x 20, then the total magnification would be x 200
Tip: Don't confuse magnification with resolving power, as resolving power is how detailed an image is, and magnification is how big the image appears y'all
SEM AND TEM MICROSCOPES!
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The Tems fire a beam of electrons at the cell to produce an image of the insides, however, is mostly 2D based. But the Sem, the cell has to be covered in a heavy metal, mostly GOLD and a beam of electrons is fired at the surface to create an image of its surface, which appears 3D! great stuff mang.
