The engineering required to build a very large refracting telescope would be many times more expensive than an equivalent reflector. With the mirror optics of a reflecting telescope, the telescope can be "folded" so that light passes through the barrel of the telescope three or more times, while a refracting telescope is straight.
Another reason even more important, is that in a refracting telescope the light passes THROUGH the glass lenses, while in a reflector the light bounces off a polished mirror. When light passes through a glass lens, some little bit of the light is absorbed and lost; in a reflector, everything bounces off.
To make this even worse, the lenses for a large diameter refracting telescope would have to be quite thick even at the edges to support their own weight, and the amount of light lost depends on the thickness of the lens.
So reflecting telescopes not only handle the light more efficiently, but are easier to build.
Due to the larger weight involved with a larger telescope, a lens in a large refracting telescope will become distorted and no longer project an image to the proper focal point. With a reflecting telescope, this problem is not as prominent and if it does happen it does not have as big of an impact on the image.
The Yerkes Telescope is the worlds largest telescope that's founded by the University of Chicago.
Newton did not invent the telescope. The first practical telescope was made by Hans Lippeshey and Zacharias Janssen in 1608 in the Netherlands. Galileo made significant improvements the following year. All these early refracting telescopes suffered from big problems with chromatic aberation, the separation of colours.The first reflecting telescope is credited to Niccolò Zucchi in 1616. In 1668, Isaac Newton invented a much improved reflecting telescope that still bears his name, the "Newtonian reflector." He added a smaller "diagonal" mirror near the primary mirror's focus to reflect the image at a 90° angle allowing him to look through the side of the telescope and see without blocking the incoming light.Nice answer upstairs! Newton made his first "good" reflecting telescope in 1688. It still exists -- and works!
Arecibo
Arecibo Radio Telescope is in Puerto Rico at 18 degrees 20 minutes north, 66 degrees 45 minutes west. It's plainly visible on Google Earth, for example.
The address of the Worlds Largest Things Incorporated is: Po Box 101, Lucas, KS 67648-0101
The Yerkes Telescope is the worlds largest telescope that's founded by the University of Chicago.
Puerto Rico
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Newton did not invent the telescope. The first practical telescope was made by Hans Lippeshey and Zacharias Janssen in 1608 in the Netherlands. Galileo made significant improvements the following year. All these early refracting telescopes suffered from big problems with chromatic aberation, the separation of colours.The first reflecting telescope is credited to Niccolò Zucchi in 1616. In 1668, Isaac Newton invented a much improved reflecting telescope that still bears his name, the "Newtonian reflector." He added a smaller "diagonal" mirror near the primary mirror's focus to reflect the image at a 90° angle allowing him to look through the side of the telescope and see without blocking the incoming light.Nice answer upstairs! Newton made his first "good" reflecting telescope in 1688. It still exists -- and works!
In 1974 by the worlds largest radio telescope at Arecibo in Puerto Rico.
Arecibo
Worlds largest animal: Blue Whale
the worlds largest swamp is the Sudd thx for asking
USA has the worlds largest rail network.
Arecibo Radio Telescope is in Puerto Rico at 18 degrees 20 minutes north, 66 degrees 45 minutes west. It's plainly visible on Google Earth, for example.
the one that sees the farthest, lol jk idk i think its the hubble telescope
The worlds largest natural magnet is the earth itself.