Fourth year of secondary education
Optics
C.Palacios
J.L. San Emeterio
Optics
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4.1 The telescope: How does it work?

 

 



ELEMENTS OF A TELESCOPE


It is said that Nero used a ruby as a magnifying glass. During the Middle Ages it was quite usual for short-sighted scholars to use spectacles for reading. In about 1600, a Dutchman called Liepperhey built the first telescope worthy of the name. Later, Galileo built others for himself and pointed them at the sky. The era of modern Science had begun.


EYEPIECE

 LENS


 

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