What Causes Day Length to Change from Summer to Winter?


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Why is the Apple Calendar so broken?


UPDATE: I’m hearing reports of calendar apps crashing quite severely. Please only experiment on non-vital apps as you could hypothetically lose data stored in them! But apparently if the app crashes and restarts don’t fix it: a forced restart will.

Proceed with caution, at your own risk, and report any findings!

Buy a physical book from Waterstones! bit.ly/humblepi_waterstones

ebook on Amazon: www.amazon.com/s?k=humble pi
Audiobook on Audible: www.audible.co.uk/pd/Humble-Pi-Audiobook/0241375509

Huge thanks to Nick Day and Ken Taylor who emailed me about this bug. If you find anything out, or know someone who might know, email me: matt@standupmaths.com

If you want to read the part of my book about this, here it is. (Dont tell anyone I let you have it for free.)
www.dropbox.com/s/ccloc2ql091l1v5/HumblePi-calenduh.pdf?dl=0

This is the video of me talking about the Boeing 787 Dreamliner and the Los Angeles Air Traffic Control Route Center problems.
www.youtube.com/watch?v=HYgqvapH7ak

2^52 microseconds before 1 January 2001
www.wolframalpha.com/input/?i=2^52 microseconds before 1 January 2001
(yes, yes, it is technically off by a microsecond)

CFAbsoluteTime
Type used to represent a specific point in time relative to the absolute reference date of 1 Jan 2001 00:00:00 GMT
developer.apple.com/documentation/corefoundation/cfabsolutetime

Double-precision floating-point format on wikipedia.
en.wikipedia.org/wiki/Double-precision_floating-point_format

CORRECTIONS
— Nothing yet. Let me know if you spot anything!

Thanks to my Patreon supports who do support these videos and make them possible. Here is a random subset:

Toby ONeil
Nate Brown
Jordan Scales
Matthew Holland
Philippe von Bergen
Glenn Watson
Kevin Mannon
David Lake
Lucas Werkmeister
Jan Strohbeck

Support my channel and I can make more videos:
www.patreon.com/standupmaths

Filming and editing by Matt Parker
Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com/
US book: www.penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker/
UK book: mathsgear.co.uk/products/5b9fa76f230ffa140094dc43
Nerdy maths toys: mathsgear.co.uk/

The Mathematics of Winning Monopoly


I talk to Hannah Fry and compare our mathematical investigations into playing Monopoly. I’ve put all my probabilities below.

You can buy a signed copy of Hannahs book on Maths Gear:
mathsgear.co.uk/collections/books/products/signed-copy-of-the-indisputable-existence-of-santa-claus

In the UK you can also get it from Waterstones:
www.waterstones.com/book/the-indisputable-existence-of-santa-claus/dr-hannah-fry/dr-hannah-fry/9780857524607

There is a Kindle edition on Amazon:
www.amazon.com/Indisputable-Existence-Santa-Claus-ebook/dp/B01G96DPWS?_encoding=UTF8

Why was Bidens win calculated to be ONE IN A QUADRILLION?


This is Part III out of one with a quadrillion zeros parts.

Give the gift of Stand-up Maths this Christmas:
www.patreon.com/standupmaths
mathsgear.co.uk/

Part I: «Why do Bidens votes not follow Benfords Law?»
www.youtube.com/watch?v=etx0k1nLn78

Part II: «Do these scatter plots reveal fraudulent vote-switching in Michigan?»
www.youtube.com/watch?v=aokNwKx7gM8

Here is the Supreme Court filing from the State of Texas:
www.supremecourt.gov/DocketPDF/22/22O155/162953/20201207234611533_TX-v-State-Motion-2020-12-07 FINAL.pdf

Declaration of Charles J. Cicchetti, Ph.D. is in the appendix of this document, starting on page 20.
www.supremecourt.gov/DocketPDF/22/22O155/163048/20201208132827887_TX-v-State-ExpedMot 2020-12-07 FINAL.pdf

Behold my declaration.
www.dropbox.com/s/337h06gx5t6tjte/Declaration of Matthew T. Parker, B.Sc. Dip. Ed. (2020).pdf?dl=0

Here is the spreadsheet where I checked the combinations of states won by Democrats.
www.dropbox.com/s/d1sat2bjb1ts9n3/combinations-of-states-won.xlsx?dl=0

CORRECTIONS
— At 01:51 I accidentally said “Senate” when I meant “Congress”. But on-screen it says “House Republicans” so I think it still makes sense despite my mis-speak.
— Let me know if you spot any more mistakes!

Thanks to my Patreons who mean I can keep throwing time and effort at videos about this election. And dont worry, I am a prudent spender of your money: that judges robe was hired not purchased outright. But I do now own the wig.
www.patreon.com/standupmaths

As always: thanks to Jane Street who support my channel. Theyre amazing.
www.janestreet.com/

Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com/
US book: www.penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker/
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The Ballad of Mad Capn Tom, Part 2


Tom tells the tale of the time Mad Capn Tom ran for parliament. Yes, seriously.

Manifesto video: www.youtube.com/watch?v=ARjHBukWON8
Obituary: www.yarr.org.uk

MATT: YouTube.com/unnamedculprit — TOM: YouTube.com/TomScottGo

Sailors Lament by Audionautix is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/)
Artist: audionautix.com/

Toms Zero G Flailing


Tom flew on a Zero-G flight with the European Space Agency for this week’s video on his channel. This is the behind the scenes.
MATT: YouTube.com/unnamedculprit | TOM: YouTube.com/TomScottGo

(And if youre from a space agency, do get in touch! www.tomscott.com/contact/ )

How Zero-G Planes Work
www.youtube.com/watch?v=FO_Ox_dH0M8

If youre a masters or PhD student from an ESA member state, and zero-g sounds like your thing, have a look at the Fly Your Thesis program: www.esa.int/Education/Fly_Your_Thesis — the 2017-18 submissions are closed, but that just gives you time to start planning for next year…

Параллельные миры, квантовая механика и кот [Veritasium]


Помощь проекту: vertdider.tv/to-support-us/

Сколько раз вы пытались понять квантовую механику? А сколько раз получилось? Наконец за объяснение взялся Дерек Маллер. Из видео узнаем, что там с параллельными мирами, сколько их может быть и еще раз попробуем вникнуть в то, что такое суперпозиция и квантовая запутанность.

Перевод: Алексей Малов
Редактор: Елена Смотрова
Научный редактор: Кирилл Циберкин
Озвучка: Вадим Казанцев, Сергей Васильев
Монтаж звука: Андрей Фокин
Монтаж видео: Джон Исмаилов
Обложка: Глеб Брайко

Сайт студии: vertdider.com

Спасибо за поддержку на www.patreon.com/VertDider.
Озвучки Vert Dider выходят с вашей помощью:

Nikolay Verhovsky, Nick Denizhenko, Oleksii, Mikhail Stolpovskiy, Ігор Дорохов, Кирилл Басалык, Boris Bendikov, Dina vysotskaya, Sergei W, Михаил Панькин, Hackee, Felix, Pavel Parpura, Yevhen, Kosoy, Anton Bolotov, Максим Sheridan Горлов, Anton Makiievskyi, Vladimir Grachev, Denis Titusov, Spartak Kagramanyan, Dmitriy Omelyansky, Konstantin Pesyakov, Olga Shistareva, Alex Katkov, Dmitrii Tretiakov, Serj Kravchuk, Alexander Zimin, Евгений Миф, Alexey Kukushkin, Пугачёв Пётр, Viktoria, Kamerton_440, Pandaben, Oleg Streltsov, Alexandr Globov, space monkey, Vladimir Goshev, Vladyslav Sokolenko, Елизавета, Pavel D, Ivan Iakimov, Иван Дьяченко, Karl Soveren, Claudia Barzaeva, sepeca, Olga Podolskaya, Антон Шатаев, Dushes, Aleksei Masliukov, Valeria Volodina, Vladimir Gavriushov, Maria Burtseva, Aleksey Sazonov, Irina Shakhverdova, Evgeny Vrublevsky, Виталий Пастушенко, Katya Prokopchuk, Lirin Alex, Alterien

Мы в социальных сетях:

vk.com/studio_vd

www.facebook.com/StudioVertDider

twitter.com/Vert_Dider

geektimes.ru/company/vertdider/

ok.ru/group/53365179089010

instagram.com/vert_dider

coub.com/vertdider

vert-dider.livejournal.com/

t.me/vertdider

Разрешение на публикацию: goo.gl/6n4dT7
© www.youtube.com/user/1veritasium
Источник: youtu.be/kTXTPe3wahc

Как выглядит поезд будущего


Тоже интересно!
Беспилотный поезд в России: youtu.be/Be5Ji2eAerE

Специальный репортаж от команды «Чуда техники»: обзор и тест лучших и самых быстрых скоростных поездов в мире, а также рассказ о том, какими будут поезда в будущем. Обзор технологии Hyperloop и других изобретений

Подписка на канал: bit.ly/2A3yjQp

Обзоры новых моделей смартфонов и планшетов 2017 и 2018 года, сравнения, Android и iOS, ноутбуки и дроны, китайские гаджеты и техника с Aliexpress, тест-драйвы электромобилей, а также все выпуски передачи Чудо техники — на сайте chudo.tech

В поисках жизни за пределами Земли - есть ли кто-нибудь там? - Космический документальный фильм


Марс — четвёртая по удалённости от Солнца и седьмая по размерам планета Солнечной системы; масса планеты составляет 10,7 % массы Земли. Названа в честь Марса — древнеримского бога войны, соответствующего древнегреческому Аресу.