Matt Gallagher

32 Followers
404 Following
39 Posts
Lawyer; Dad; Chair, Offshore & Technology Division US Sailing; photographer; licensed pt 107 drone pilot; Chicago
websitehttps://teamgallagher.net

And finally, this fun little bit from his book “Gravitation and Cosmology.”

A great book, but a common complaint is that it is maybe not the best place to learn GR.

On the other hand, does your favorite GR textbook tackle the really big questions like “Is Middle Earth flat?”

I’ve been thinking about trusses a lot lately.
@drdrang Great photo BTW!
@drdrang No doubt! The bridge history museum (https://www.bridgehousemuseum.org/) is a cool stop downtown sometime. My favorite though is the railroad bridge still used by Amtrak on the south side (originally part of the old Penn RR) - https://media.gettyimages.com/photos/amtrak-pennsylvania-railroad-lift-bridge-over-the-south-branch-of-the-picture-id508435896. Feels steampunk every time I see it move!
McCormick Bridgehouse & Chicago River Museum

Plan a visit to the unique McCormick Bridgehouse & Chicago River Museum. Learn Chicago River and bridges history and see the bridge gears at work.

McCormick Bridgehouse & Chicago River Museum
@drdrang A friend of mine literally wrote the book on Chicago bridges - http://pmcbriarty.com/chicago-history/chicago-river-bridges/.
It's #TravellerMayday! Perhaps the greatest resource for the #TravellerRPG, or possibly ANY science fiction RPG, is the @TravellerMap
at https://travellermap.com/
The Traveller Map

An interactive map of the universe of the Traveller role playing game, incorporating official data and fan submissions. The site also provides services for generating custom maps and APIs for incorporating maps into other sites.

The Traveller Map

Hear the Earliest Recorded Customer Complaint Letter: From Ancient Sumeria 1750 BC

https://www.openculture.com/2021/05/hear-the-earliest-recorded-customer-complaint-letter-from-ancient-sumeria-1750-bc.html

Hear the Earliest Recorded Customer Complaint Letter: From Ancient Sumeria 1750 BC

Three-thousand, seven-hundred, and seventy-one years ago, in the city of Dilmun, near Ur in Mesopotamia, there was a merchant named Ea-nasir. His business was in selling metal ingots that he purchased in the Persian Gulf. Was he a good merchant? Not according to one of his customers, Nanni.

Open Culture
@brentsimmons Done. Thanks to the teams at both companies that did such an amazing job over the years!

If you’ve used Twitterrific and/or Tweetbot and have a subscription — then this is your chance to be awesome and support awesome indie developers.

Here’s what to do: get the latest versions from the App Store, launch the app, and then tap the “I Don’t Need a Refund” button.

What is only a few dollars to you ends up, in aggregate, meaning a ton to these folks who work so hard and bring so much to our computing lives.

I found this taped to the door of the geography department at GWU today and it brought me so much joy. A guide to figuring out when a map was made based on features. Zoom in. It’s amazing.