Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS Science (paper #6).

A telescope is an important tool for astronomy that gathers light and directs it to a single point. Some do this with curved mirrors, some with curved lenses, and some with both. Telescopes make faraway things look bigger, brighter and closer. Galileo was the first person to use a telescope for astronomy, but he did not invent them. The first telescope was invented in the Netherlands in 1608. Some telescopes, not mainly used for astronomy, are binoculars, camera lenses, or spyglasses.

The word “telescope” is usually used for light your eyes can see, but there are telescopes for “invisible” light. Infrared telescopes look like normal telescopes, but have to be kept cold since all warm things give off infrared light. Radio telescopes are like radio antennas, usually shaped like large dishes.

X-ray and Gamma ray telescopes have a problem because the rays go through most metals and glasses. To solve this problem, the mirrors are shaped like a bunch of rings inside each other so the rays strike them at a shallow angle and are reflected. These telescopes are space telescopes because not enough of this radiation reaches the Earth. Other space telescopes are put in orbit so the Earth’s atmosphere does not interfere.

Value Addition UKPCS Mains : Uttarakhand Special (Click Here)

UKPCS Mains Study Material subject wise

The notes are strictly as per UKPCS syllabus (topic wise):

• UKPCS Polity sample notes click here

Individual Polity Cost: Rs. 1500/- (including shipping)

• UKPCS Science sample notes click here

Individual S&T Cost: Rs. 1500/- (including shipping)

• UKPCS Geography sample notes click here

Individual Geography Cost: Rs. 1500/- (including shipping)

• UKPCS Economics Sample notes click here

Individual Economics Cost: Rs. 1000/- (including shipping)

• UKPCS Ethics Sample Notes click here

Individual Ethics Cost: Rs. 1000/- (including shipping)

• UKPCS History Sample Notes click here

Individual History Cost: Rs. 1500/- (including shipping)

• • • • • • • • • UKPCS Study Material (Click Here)

                  UKPCS Answer Writing Program (Click Here)

                  UKPCS Mains Test Series (Click Here)

                  UKPCS Best Copies and Tips (Click Here)

                • Call/WhatsApp –> 9997453844

• Author
• Recent Posts

Hemant Bhatt

Chief Mentor at Oracle IAS

Hemant Bhatt is a B. Tech from Pantnagar University and has studied Social Sciences at SciencesPo, Paris. He teaches at Oracle IAS, Dehradun. He has given 5 UPSC mains back to back along with 2 interviews.
He is a bibliophile,accomplished writer and a fitness enthusiast.

Latest posts by Hemant Bhatt (see all)

• UKPCS Upper Mains 2024 Study Material : Prepared by Experts Topic wise - April 6, 2024
• UKPSC Mains 2024:New Syllabus Pattern - April 6, 2024
• Oracle IAS’s Mentorship Program for UKPCS 2024 Pre Exam - March 21, 2024