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An early link to my new video about the Raising of Chicago which will go live in a few hours. If you spot any mistakes let me know before it is too late!

There are some hidden frames towards the end of the video. I was thinking about posting them directly to patreon. Should I spoiler things like that here or does it ruin the fun? Vote now!

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The Raising of Chicago: the windy city

I had a great time in Chicago. Thanks to everyone who made it such a fantastic trip. Here’s the page on my website for speaking at conferences etc: http://standupmaths.com/speaking/ Rising Chicago timeline: 1830: Population below 100 1850s: Population around 100,000 1856: Sewer built above street level 1858: First building raised 1860: Half a block of buildings raised at once 1861: Tremont House hotel raised with guests inside 1871: Great Chicago Fire I did enjoy my trip to the Chicago History Museum and the staff were very helpful. https://www.chicagohistory.org/ This was the best online guide to the raising of Chicago which I found. http://users.ox.ac.uk/~sedm1912/lch.html This is also a good read. https://chicagology.com/prefire/raising/ The quote from David Macrae is from the second volume of The Americans at Home on pages 190 and 191. https://books.google.com/books/about/THE_AMERICANS_AT_HOME_PEN_AND_INK_SKETCH.html?id=Lbx6L4epEDUC See the Edison video (actually filmed by William Heise and James H White) at the Library of Congress. “Corner Madison and State Streets, Chicago” https://www.loc.gov/item/00694183/ Photo of screw jack taken by Johnalden. https://commons.wikimedia.org/wiki/File:House_Jack_2.5_tons.jpg Thanks to my many Patreon supports! Here is a subset: Doug Jones Andrew Mohlmann Clément Brisset Michael Tindall Joshua Support my videos on Patreon: https://www.patreon.com/standupmaths Music by Howard Carter Design by Simon Wright MATT PARKER: Stand-up Mathematician Website: http://standupmaths.com/ Maths book: http://makeanddo4D.com/ Nerdy maths toys: http://mathsgear.co.uk/

Comments

Marius Hauck

Those hidden frames are awesome! You shouldn't spoil them, it's much more fun to track them down yourself :D.

Rémy GRANDIN

I've never thought about screws as "compact inclined plane" but it is a valid view of our 3D world ! ^^ (P.S.: And Matt, don't mess with edison ghost, I'm sure he is right behind you !)

Nathan Rae

Yes leave the Edison bit to be the reward for anyone dedicated enough to work out what it is to get the joke... (Or is it a bit tricky for non video professionals?)

Ian McLaughlin

Ok, I'm now late for work. All because you told me there was a few hidden frames at the end. Of course I noticed them flick by. So I had to see what they were. Down the rabbit hole of trying to find out how to single-frame-step through a Youtube video, only to find out that the feature used to be there (and plenty of pages describing how to use it), but Youtube took it away. So I eventually find a third-party site letting me do it. Curiosity satisfied, I now have to come up with a plausible reason for why I'm late, because my co-workers don't need to know the real reason I'm late.

Talya

Tried to pause on the single-framers. Failed. Noticed it said something about Edison. Now I'm curious.

Christopher Mayfield

I really like the play of words of razing and raising of Chicago. The raising is not able to been seen cause of the fire razing the city.

Mark van Renswoude

Used that one too. It seems like it doesn't actually do frames but small time increments to emulate them, so if you can't find the frames because it skipped over them, change the rightmost dropdown to "60 FPS".

David Garrison

I found a few of the frames. I'd recommend giving people a chance to find them if they want to and then putting them up here after a few days or so.

Keawe Leong

It's fun to find them. I vote no spoilers.

Ludvig Eriksson

Metric conversions would have been nice :)

Ian McLaughlin

I thought this too, but then I realized that it's probably because Matt has been in the US for too long. He needs to get back to a metric country stat.

Matt Parker

I always found it odd as a kid at school that the screw and the inclined plane were separate simple machines. but I guess the screw does have some advantages (rotating is easier than sliding).

Matt Parker

It seems to be a mixed-bag of difficulty. I'll do a survey of the youtube comments after and see how people went.

Matt Parker

Yeah, I decided that was one laboured pun too many. I went all out on the _windy_ city.

Matt Parker

I know it goes against my normal standards but I was describing a historical engineering feat which was all done in feet. I should add metric subtitles.

Matt Parker

I think a few people have put them on twitter now anyway!

Matt Parker

In hindsight I should have put subtitles with the conversions.

Nathan Rae

You can't step forward frame by frame on youtube (or at least I don't know the keyboard shortcut if there is one) so people will have to get really lucky with their space bars.

Ian McLaughlin

Rotating is easier than sliding? Is that just because of the mechanical advantage of a lever? Two simple machines in one!