The development of the telescope

Question 1 - 10

Write ONE WORD ONLY for each answer.

THE DEVELOPMENT OF THE TELESCOPE

Roger Bacon (1200s)
- His invention assisted ﻿ with sight problems when they were reading.
Lipperhey
- 1608: he put concave and convex lenses together to create the telescope.
- The small telescope was first used in the ﻿.
Galileo
- 1609: he tried out different lenses to improve the telescope.
- He started ﻿ of the lenses he needed.
- The venetian government hoped to use this instrument for the ﻿.
Galileo’s astronomical discoveries
- The Moon:
He discovered its surface was mountainous.
He worked out the height of the mountains by identifying spots that were ﻿.
He created ﻿ of the moon’s surface.
- Jupiter:
He realized that the bodies orbiting Jupiter were not ﻿ but moons.
Further development
- Scientists discovered that increasing the telescope’s ﻿ improved its power.
- 1670: Hevelius built a telescope 43 meters long.
Poor results: the telescope will move with the ﻿.
The problem was solved by attaching it to a ﻿.

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