17 Tonnes of Spinning Glass: Making the World's Largest Telescope - Tom Scott

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Go Inside a Telescope Mirror Factory | To a Billionth of a Meter 03:28
Go Inside a Telescope Mirror Factory | To a Billionth of a Meter
Play National Geographic 193,366
Beneath the University of Arizona football stadium sits the Steward Observatory Mirror Lab. There, giant mirrors are meticulously shaped and polished, to be used in...
Casting a $20 Million Mirror for the World’s Largest Telescope 02:26
Casting a $20 Million Mirror for the World’s Largest Telescope
Play IEEE Spectrum 449,838
Building a mirror for any giant telescope is no simple feat. The sheer size of the glass, the nanometer precision of its curves, its carefully...
If You Detonated a Nuclear Bomb In The Marianas Trench 07:04
If You Detonated a Nuclear Bomb In The Marianas Trench
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Thank's Armando Sepulveda, Fernando Arroyo, CGSOS LLC & Twize films for "The Big Wave" project (04:03 - 04:08) in this video. Original footage: https://vimeo.com/222702871 links...
Really the most intriguing puzzle on the planet!? - The Revomaze Blue 20:53
Really the most intriguing puzzle on the planet!? - The Revomaze Blue
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Thanks to Brilliant for sponsoring this episode and supporting Mr.Puzzle! Visit https://brilliant.org/MrPuzzle/ to improve your analytical and problem-solving skills! The Revomaze is advertised to be the...
How tough is the new Gorilla Glass 5? 01:43
How tough is the new Gorilla Glass 5?
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We got a closer look at all the torture tests involved in creating Corning's most resistant Gorilla Glass to date. Subscribe to CNET: http://bit.ly/17qqqCs Watch more CNET...
Dragon-stem Goblet 12:35
Dragon-stem Goblet
Play Corning Museum of Glass 1,090,504
A dragon-stem goblet has many parts, including a bowl, a foot, and a dragon. Dip molding is used to create the dragon, and the parts...
World's Largest Amateur Telescope 02:24
World's Largest Amateur Telescope
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A monstrous 70" Dobsonian Reflector made from a relic of the cold war.
FAST: The World's Largest Telescope | A China Icons Video 14:54
FAST: The World's Largest Telescope | A China Icons Video
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What's really out there? In September 2016, China unveiled the world’s largest telescope – an instrument engineered so finely it is 3 times more sensitive...
How To Visit Svalbard 08:48
How To Visit Svalbard
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http://tomscott.com - http://twitter.com/tomscott - I had an enormous amount of B-roll footage of Svalbard that I couldn't use, and the internet had a lot of...
Why California's Musical Road Sounds Terrible 03:29
Why California's Musical Road Sounds Terrible
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In Lancaster, California, there's a musical road. When you drive over it, it plays the William Tell Overture. Unfortunately, it's out of tune. Here's why. Thanks...
What is Water Hammer? 07:40
What is Water Hammer?
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First 100 people to sign up will get $30 off their first Blue Apron order here: http://cook.ba/2hkRvlY. This video is sponsored by Blue Apron. Hydraulic transients...
Building the Giant Magellan Telescope 56:01
Building the Giant Magellan Telescope
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Dr. James Fanson, the project manager at Giant Magellan Telescope Organization, presented his talk "Building the Giant Magellan Telescope" at the Keck Institute for Space...
Why do medieval buildings overhang their lower floors? 18:27
Why do medieval buildings overhang their lower floors?
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Why do medieval buildings such as cottages and castles overhang their lower floors? The Machicolations shirt: https://teespring.com/castle-machicolations Music: Folk Round by Kevin MacLeod is licensed under a...
Optical Glass Sculptures by fine art glass artist Jack Storms - The Glass Sculptor 08:50
Optical Glass Sculptures by fine art glass artist Jack Storms - The Glass Sculptor
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This video will tell you all about the cold glass process I use to make my work. I hope you enjoy it and please share...
Origami In Space 01:51
Origami In Space
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http://tomscott.com - @tomscott - I'm joined by tef (@tef - http://programmingisterrible.com) who explains the Miura fold, a fancy origami fold that has uses both up...
This Video Is 2D And 3D Simultaneously: the Pulfrich Effect 03:31
This Video Is 2D And 3D Simultaneously: the Pulfrich Effect
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Hold on tight, because with a stabilised camera shot and a pair of sunglasses, you're about to see a video that works in both 2D...
The European City Centre With No Street Names 02:27
The European City Centre With No Street Names
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In the Quadratestadt of Mannheim, Germany, the streets aren't named: instead, the blocks are. It's an exception to a rule that most people don't even...
GMT Casting to Cleanout 04:53
GMT Casting to Cleanout
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This Video from the University of Arizona summarizes the processes from Casting to Cleanout of the 8.4 meter mirrors of the Giant Magellan Telescope with...
Which telescope to buy? 07:42
Which telescope to buy?
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Below are some of the telescopes I've used in recent years, ranging from ~30 -3000 dollars. (shortened for YTs character limits) Price $35 76mm reflector dobsonian mounted...
Why Is Blue So Rare In Nature? 08:27
Why Is Blue So Rare In Nature?
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Duh, except for the sky… and the ocean… Don't miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Among living...
Creatures That Evolved To Defend Against Humans 12:30
Creatures That Evolved To Defend Against Humans
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amazing animals with incredible defensive powers and abilities in the wild Subscribe to our channel: http://goo.gl/9CwQhg For copyright matters please contact us at: [email protected] We’ve all heard...
How NOT to Store Passwords! - Computerphile 09:24
How NOT to Store Passwords! - Computerphile
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Security of users' passwords should be at the forefront of every web developer's mind. Tom takes us through the insecure ways in which some websites...
Talking Tom Shorts – Ultra Marathon (All Episodes) 20:42
Talking Tom Shorts – Ultra Marathon (All Episodes)
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Grab some popcorn and get comfortable - it’s time to binge watch all 23 Talking Tom Shorts! Subscribe to my YouTube channel: https://www.youtube.com/user/TalkingTomCat?sub_confirmation=1 I’m Talking...
10 Signs  You’re Way More Intelligent Than You Realize 10:47
10 Signs You’re Way More Intelligent Than You Realize
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Here is a list of signs that actually indicate a super bright mind. They are all scientifically proved, so if you feel like a few...
Making Artificial Earthquakes with a Four-Tonne Steel Ball 03:34
Making Artificial Earthquakes with a Four-Tonne Steel Ball
Play Tom Scott 377,452
In Göttingen, Germany, there's a four-tonne steel ball that can be raised up a 14-metre tower -- and then dropped in less than two seconds,...
This week's guest video comes from Active Galactic Videos: go subscribe! https://www.youtube.com/ActiveGalacticVideos/ They got to walk on the dish of a telescope: https://www.youtube.com/watch?v=1lfXsN45088

At the Richard F. Caris Mirror Lab, under the football stadium of the University of Arizona, there's an enormous rotating furnace, keeping tonnes of glass heated as it forms the mirrors for the Giant Magellan Telescope. Here's a look inside!
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Tom Scott
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Hi, I'm Tom Scott. These are some of the things I've made and done. They'll probably come back to haunt me in a few years' time. (Want to get in touch about anything? Use the "contact me" link below, not YouTube messages!)


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