✓Microscopy and magnification: Cell level systems: Biology: GCSE (9:1)

Light microscope

Equipment which uses visible light to detect and magnify small objects

Electron microscope

Equipment which uses electron beams to produce images with higher magnification and resolution

Transmission electron microscope (TEM)

A microscope that uses an electron beam to study the internal structure of thinly sectioned specimens, significantly higher resolution than a light microscope

Scanning electron microscope (SEM)

A microscope that uses an electron beam to study the surface architecture of a cell or other specimen

Magnification

How much an image appears to have increased in size by

Resolution

The degree of detail visible in an image

Magnification equation

Magnification = size of image/size of real object

Standard form

A system where numbers are expressed as decimals between 1 and 10 and multiplied by a power of 10

Centi

A prefix meaning one hundredth of a unit

Milli

A prefix meaning one thousandth of a unit

Micro

A prefix meaning one millionth of a unit

Nano

A prefix meaning one thousand-millionth of a unit

Image size

The size of an object on an image after magnification

Actual size

The actual or real size of an object before magnification

Sub-cellular structures

Structures or organelles that are found in the cell