GCSE Biology- Microscopy

Parts of a light microscope are that they have a coarse focus, fine focus, light, slide, stage, eye piece and an objective lens.

Electron Microscopes

Magnification is the ability to have a microscope produce an image of a smaller/larger scale

Light Microscopes

Living samples

Fixed samples

Light microscope uses light and mirrors.

Smaller wavelength becomes blurred.

Magnify incredible detail

Study cell interior

Resolving Power

Find Bacteria arrays

Cheaper than electron

Commonly used in schools and other common places

Resolution is the ability of a microscope to specify/ recognise detail.

They include concave and convex lenses.

Conversions Sums

Nano (n) divided by 1000 into Micro (h) divided by 1000 in Milli (m) and divided by 1000 into base unit (cm)

Base unit (cm) x 1000 milli (m) x 1000 Micro (h) x 1000 nano (n)

actual= image x magnification

magnification= image/ actual

light microscope

electron microscope