Thames & Kosmos Kids First: Big & Fun Microscope handleiding

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MICROSCOPE

Scientists use microscopes primarily in biology and medicine.

These instruments help them to see things that cannot be seen with the naked eye. Most people are

familiar with an optical microscope, which uses light for viewing the object. But there are also electron

microscopes, which work differently from optical microscopes.

PREPARING SPECIMENS

With many scientific microscopes, specimens first have to be prepared

for viewing. If they are going to be translucent, they have to be very

thin. That means that experts have to prepare precise slices of the

specimen using a sharp blade. This part of microscopy is very time-

consuming and must be performed correctly if the specimen is to be

recognizable under the microscope.

Learning to use a microscope

helps children learn many

important skills:

Microscopy

Perception skills, concentration, patience,

logic, and the ability to solve problems

Fine motor skills and the ability

to perform precise movements

The ability to abstract

Hand-eye coordination

An understanding of nature

Promoting children’s

abilities

RESOLUTION AND MAGNIFICATION

Many people believe that the quality of a microscope can be determined by its

highest degree of magnification. But that is not really true. Much more important is

the resolution, or how sharp the image is, which is determined by the quality of the

individual lenses and their refractive power. In the example on the left, with a bad

lens you might only see a single dot with slightly blurry edges. If the same object is

viewed under a higher-quality lens, however, you will see two dots close together

with a noticeably sharper border.

Low resolution

High resolution

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