Fourth year of secondary education
Optics
C.Palacios
J.L. San Emeterio
Optics
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4.2.1 The telescope: What type should I buy?

Is it better to have a long telescope or a short one? Is a wide telecope better than a narrow one?. The following visual may help you to answer these questions.

                                                                                                                                                                             

 

Light as a wave
What type of wave is light?
Colour and luminous intensity
Reflection
What is reflection?
Concave mirrors
Convex mirrors
Refraction
What is refraction?
Refraction depending on colour
Converging lenses
Diverging lenses
An optical instrument: the telescope
How does it work?
What type should I buy?
Light as a particle
The photoelectric cell
What can we deduce from the way it works?
Evaluation