![3 Generations of Telephones at the 100” Telescope, Mount Wilson Observatory (2 Photos) via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/06/mount-wilson-phones-1.jpg)
3 Generations of Telephones at the 100” Telescope, Mount Wilson Observatory (2 Photos) via Instagram [Photography]
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Tag: science
![Climbing the stairs to the 100” Telescope, Mount Wilson Observatory via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/06/mount-wilson-stairs.jpg)
Climbing the stairs to the 100” Telescope, Mount Wilson Observatory via Instagram [Photography]
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![100” Telescope at Sunset, Mount Wilson Observatory via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/06/mount-wilson-dome-2.jpg)
100” Telescope at Sunset, Mount Wilson Observatory via Instagram [Photography]
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![100” Telescope at Sunset, Mount Wilson Observatory via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/06/mount-wilson-dome.jpg)
100” Telescope at Sunset, Mount Wilson Observatory via Instagram [Photography]
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![Where do math symbols come from? via John David Walters on YouTube [Video] [Shared]](http://welchwrite.com/blog/wp-content/uploads/2022/05/Where_do_math_symbols_come_from__John_David_Walters.gif)
Where do math symbols come from? via John David Walters on YouTube [Video] [Shared]
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![Mount Wilson Observatory, California via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/05/mount-wilson-fog.jpg)
Mount Wilson Observatory, California via Instagram [Photography]
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![100” Telescope, Mount Wilson Observatory, California via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/05/100-inch-telescope.jpg)
100” Telescope, Mount Wilson Observatory, California via Instagram [Photography]
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![Diorama, Mount Wilson Observatory, California via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/05/diorama-mount-wilson.jpg)
Diorama, Mount Wilson Observatory, California via Instagram [Photography]
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![Dome of 100” Hooker Telescope, Mount Wilson Observatory, California via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/04/mount-wilson-dome.jpg)
Dome of 100” Hooker Telescope, Mount Wilson Observatory, California via Instagram [Photography]
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![My Los Angeles 97: 150’ Solar Tower, Mount Wilson, CA via Instagram [Photography]](http://welchwrite.com/blog/wp-content/uploads/2022/04/my-la-097-mount-wilson.jpg)
My Los Angeles 97: 150’ Solar Tower, Mount Wilson, CA via Instagram [Photography]
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![The curious history of the clothespeg via The Economist [Shared]](http://welchwrite.com/blog/wp-content/uploads/2022/04/1_XWHsCgZ-rLdDOyYykTKAdg-1.jpg)
The curious history of the clothespeg via The Economist [Shared]
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![Air Gyro via TikTok [Science] [Video] [Shared]](http://welchwrite.com/blog/wp-content/uploads/2022/03/air-gyro.png)
Air Gyro via TikTok [Science] [Video] [Shared]
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![A chart of imperial and customary units! via dexter.mp4 on TikTok [Shared] [Video]](http://welchwrite.com/blog/wp-content/uploads/2022/02/measurements.png)
A chart of imperial and customary units! via dexter.mp4 on TikTok [Shared] [Video]
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![UK farmer went for a walk, stumbled on remains of rare Roman mosaic and villa via Ars Technica [Shared]](http://welchwrite.com/blog/wp-content/uploads/2022/01/mosaic2-CROP-640x427-1.jpg)
UK farmer went for a walk, stumbled on remains of rare Roman mosaic and villa via Ars Technica [Shared]
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Citizen Science Opportunity: NASA GLOBE Cloud Challenge 2022: Clouds in a Changing Climate
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