What are the two most important designs for telescopes based on mirrors?

What are the two most important designs for telescopes based on mirrors?

If you were looking to buy a telescope for yourself, you would learn that there are two basic designs:

• refracting telescopes, also known as refractors.
• reflecting telescopes, also known as reflectors.

Who was the first person to use a reflecting telescope?

Isaac Newton has been generally credited with building the first reflecting telescope in 1668. It used a spherically ground metal primary mirror and a small diagonal mirror in an optical configuration that has come to be known as the Newtonian telescope.

What is the longest running TV show still on air?

The Simpsons

What is the world’s longest running TV show?

Guiding Light is the longest-running TV show in the world, with 72 years on the air. The American daytime soap was created in 1937, debuting on the radio – and was finally taken off CBS in 2009.

Is The Simpsons ending in 2020?

The thirty-first season of the animated television series The Simpsons premiered on Fox in the United States on September 29, 2019, and ended on May 17, 2020.

What are the top 10 longest running TV series?

Today we are ranking the ten longest-running TV shows in history….Each of these shows had that special chemistry which allowed them to connect with viewers, and maintain their attention for the long haul!

1. 1 The Simpsons.
2. 2 South Park.
3. 3 Law & Order: Special Victims Unit.
4. 4 Gunsmoke.
5. 5 E.R.
6. 6 NCIS.

What are the 5 longest running TV shows?

The 5 Longest-Running TV Shows of All Time

• The Simpsons. The Simpsons | Fox.
• 2 (tie). Gunsmoke.
• 2 (tie). Law & Order.
• South Park. South Park | Comedy Central.
• Law & Order: SVU. Law & Order: SVU | NBC.

What is the #1 TV show in America?

The answer is “Jeopardy!” The question is, “What is America’s favorite TV show of all time?” In YouGov polling, the game show was the unanimous No. 1 pick of millennials, Generation Xers and baby boomers.

What show has the most seasons in the world?

What is the longest running weekly episodic television show in history?

Monday Night RAW

What is the shortest running TV show?

Six Very Short-Lived TV Shows

• Emily’s Reasons Why Not (2006), ABC.
• Lone Star (2010), FOX.
• Ironside (2013), NBC.
• Cavemen (2007), ABC.
• Work It (2012), ABC.
• The Paul Reiser Show (2011), NBC.

What is the longest TV series on Netflix?

15 Longest-Running Netflix Originals, Ranked

1. 1 Chelsea: 120 Episodes, 2 Seasons.
2. 2 Orange Is The New Black: 91 Episodes, 7 Seasons.
3. 3 The Ranch: 80 Episodes, 8 Seasons.
4. 4 Grace And Frankie: 78 Episodes, 6 Seasons.
5. 5 BoJack Horseman: 77 Episodes, 6 Seasons.
6. 6 Fuller House: 75 Episodes, 5 Seasons.
7. 7 House Of Cards: 73 Episodes, 6 Seasons.

Which TV series has the most episodes?

“Gunsmoke” Inspired by the classic radio drama, “Gunsmoke,” the highly-acclaimed TV series depicting the settlement of the American West, aired on CBS from 1955 to 1975. During those 20 seasons, it racked up an astounding 635 episodes, the most of any scripted primetime series ever.