Telescopes Flashcards
What are the 2 main types of telescopes?
Radio telescope
Optical telescope
Who invented the first refracting telescope?
Hans Lippershey
When was the first refracting telescope invented?
1608
Who later improved Hans Lippershey’s invention?
Galileo Galilei
How do refracting telescopes work?
They have two glass lenses that bend light to make an image
Who was believed to be the first person to invent the basic reflecting telescope?
Nicolo Zucchi
Who later improved the Niccolo Zucchi’s invention?
Sir Isaac Newton
How are reflecting telescopes different to refracting telescopes?
Reflecting telescopes use mirrors instead of lenses, which reflect the light to form a much clearer image
What did William Herschel build?
He built a giant reflector telescope based on Newtons that was 12 meters tall
When did William Herschel build what he built?
In 1789
What are some differences between optical and radio telescopes?
Optical VS Radio
.Look through them VS use radio waves emitted from bodies in space
.Use different rays of light VS collect radio waves
.Used mainly at night to see bodies in space VS scientists make pictures of the “sound images”
.Used best in areas with less light from nearby cities or towns VS need to be far from cellphone and radio networks so there is no interference
.
Radio telescopes use an array of telescopes. What is an “Array”?
Arrays are a group of radio telescopes that all point toward the same object or area
