INTRODUCTION

• The telescope appeared in 1608 and was credited to Hans Lippershey
• Among many others who claimed to have made the discovery
• In 1611,Johannes Kepler described how the telescope could be made.

Telescopes gave rise to the first high-speed telecommunications network
1. Spyglasses that were used to relay semaphore signals from miles away
2.lines between cities were composed by a series of towers 10-15km apart.

The Hubble telescope sends 120gigabytes of data to earth each week and is powered by energy from the sun
1.Hubbles discoveries have transformed the way scientists look at the universe
2.hubble completes a spin around earth ,moving at the speed of about five miles per second

Refractor telescopes was the first type of telescope used by ancient astronomers
1.The worlds largest refractor telescope is found in yerkes observatory in Williams bay,Wisconsin and measurer 40 in lens diameter
2.refractor telescope have a high degree error, and can pull or twist images more easily.

Galileo was the first to turn the telescope skyward,leading to the discovery of jupiters satellites and creaters on the moon
1.in 1609 an Italian physicist and astronomer named Galileo became the first person to point a telescope skyward
2.Galileo was able to make out mountains and creaters on the moon.

Telescopes this pick up radio waves,not visible light,got their start in 1932 when engineer Karl jansky noticed that the static plaguing his equipment
1.Radio waves have the longest wavelength in the electromagnetic spectrum.
2.Radio interferometers consist of two or more widely separated antennas connected by transmission lines.

Catadioptric telescopes use a combination of lenses and mirrors in order to obtain some of the advantages of both.
1.optical telescopes that combine specifically shaped mirrors and lenses to form an image.
2.Their designs can have simple all spherical surfaces and can take advantage of a folded optical path that reduces mass of the telescope.

In conclusion,
-The telescope gave us rise to telecommunication network.Since Galileo changed the view of the entire world with his first telescope.He was the first person to turn the telescope skyward.