Last Updated on July 31, 2021 by Neil Mackengie
The first telescope was invented in 1608 by a Dutch optician called Hans Lippershey. Before that, even as far back as the 13th century, scientists had been experimenting with magnifying lenses. Poor Lippershey was refused a patent for his invention, and the famous Italian astronomer, Galileo, hearing about this new idea, built his first telescope in 1609 and took all the credit for the wonderful new invention. It was a crude instrument; in fact, his most powerful telescope only magnified objects thirty-three times, and one could only see a small area (less than a quarter of the moon) at a time. Nevertheless, made some outstanding discoveries—he was the first to see the rings of Saturn, four of the satellites of Jupiter, and the mountains and craters of the moon. Today, the principle Galileo’s telescope is used for opera glasses, because it does not matter about their restricted vision and small magnification.
But telescopes have advanced beyond recognition since the time of Galileo and, with the coming of electronics, the radio telescope was invented. The radio telescope was developed after the Second World War—it is a sort of giant “eye” that sees by radio waves sent out from the stars, in just the same way as we see their light waves. The “mirror” of the telescope is a huge saucer-shaped radio reflector many feet in diameter, and it has enormous advantages over an ordinary telescope ’because it can tune in on stars and galaxies that give no light at all, or such a faint light that it is not visible to an optical telescope. The radio telescope can also penetrate clouds of cosmic dust and gas that fill vast regions of space and the great thing is that scientists can use it in all weathers because radio waves have no difficulty in traveling through the cloud of the earth’s atmosphere.
The largest radio telescope that can be pointed anywhere in the sky is at Jodrell Bank in Cheshire. The bowl is 76 meters across, and you can get a good view of it from the London/Manchester train.
What Is The Use Of Radio Telescope?
We use radio telescopes to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects.
Radio telescopes are a type of radio telescope. They bounce radio waves off the sky, then use the radio waves to observe the sky. By using radio waves, astronomers are able to look at areas of the sky that are very far away from us. Radio telescopes can detect the faint radio waves emitted by distant galaxies in the Universe. Radio telescopes are also used to observe the Sun.
The short answer is that radio waves, which are electromagnetic signals generated by atomic clocks, mobile devices, radio transmitters, and other devices that can create waves, last as long as the physical objects that radiate the signals, or as long as the technology of which the devices are a part can be used.
Who built the first radio telescope?
Karl Guthe Jansky
Radio telescopes are commonly used for scientific research, but they are also used for many other purposes. Radio telescopes are especially useful because they can receive radio signals from many different locations around the globe. An example of this is the Very Large Array (VLA), a radio telescope located in New Mexico. VLA is able to receive radio signals from all of the corners of the Earth.