Physics students learn the speed of light, c, is the same for all inertial observers but no one has ever actually measured it in one direction. Thanks to Kiwico for sponsoring this video. For 50% off your first month of any crate, go to kiwico.com/veritasium50

Huge thanks to Destin from Smarter Every Day for always being open and willing to engage in new ideas. If you havent subscribed already, what are you waiting for: ve42.co/SED

For an overview of the one-way speed of light check out the wiki page: ve42.co/wiki1way

The script was written in consultation with subject matter experts:
Prof. Geraint Lewis, University of Sydney ve42.co/gfl
Prof. Emeritus Allen Janis, University of Pittsburgh
Prof. Clifford M. Will, University of Florida ve42.co/cmw
The stuff thats correct is theirs. Any errors are mine.

References:
Einstein, A. (1905). On the electrodynamics of moving bodies. Annalen der physik, 17(10), 891-921.
(English) ve42.co/E1905 (German) ve42.co/G1905

Greaves, E. D., Rodríguez, A. M.,

For Pi Day 2016 I tried to calculate π by hand, using an infinite series. It goes ok.

Before you even start:
— Yes, I know π Day requites writing the date MM/DD. By objective measures: the wrong way. I dont care. My love of π is stronger.
— My opinion of Tau is a matter of public record: youtu.be/ZPv1UV0rD8U

CORRECTIONS:
— At 17:23 it should be π/4 not 1/π. That was contamination from the next graphic. (First spotted by Najeeb Sheikh and Jake Trookman.)

Check out y-cruncher:
www.numberworld.org/y-cruncher/internals/formulas.html

Calculating pi by weighing a circle:
www.youtube.com/watch?v=Ngj0a57Rlb0

Calculating pi with a pendulum:
www.youtube.com/watch?v=qYAdXm69l8g

Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com/
New book: makeanddo4D.com/
Nerdy maths toys: mathsgear.co.uk/

Most of the time, the maths in our everyday lives works quietly behind the scenes, until someone forgets to carry a 1 and a bridge collapses or a plane drops out of the sky.
Subscribe for regular science videos: bit.ly/RiSubscRibe

Matts book «Humble Pi» available now: geni.us/9nPhpn3

Matt Parker is a stand-up comedian and mathematician. He appears regularly on TV and online: as well as being a presenter on the Discovery Channel. His YouTube videos have been viewed over 37 million times. Previously a high-school mathematics teacher, Matt visits schools to talk to students about maths as part of Think Maths and he is involved in the Maths Inspiration shows. In his remaining free time, Matt wrote the books Things To Make and Do in the Fourth Dimension and Humble Pi: A Comedy of Maths Errors. He is also the Public Engagement in Mathematics Fellow at Queen Mary University of London.

This talk was filmed in the Ri on 1 March 2019.

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Урок физики в Ришельевском лицее

Вечером заценим новые сверхновые от разработчиков, Teslaу Roadcaster и пятую планету лично от меня! Выпуск опять получился в 20 минут, надеюсь, вам это не много!)
Группа канала vk.com/lgch_group

Практикуй английский с носителями языка на Cambly bit.ly/2Ms0oI6
Промокод COSMOS на бесплатные 15 минут и скидку 10%.

Хаумеа — одно из самых необычных тел Солнечной системы. Сильно сплюснутая планета. Но откуда мы это знаем, если на прямых снимках не видно ее формы?

По вопросам рекламы и сотрудничества prostokosmos@avtormedia.ru

Поддержать проект “Космос просто”:
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Видео содержит платную рекламу.

Источники:
Оригинальные научные статьи:
arxiv.org/ftp/astro-ph/papers/0509/0509401.pdf
arxiv.org/pdf/0811.3732.pdf
www.nature.com/articles/nature24051
arxiv.org/pdf/0801.4124.pdf

Данные о Хаумеа:
www.space.com/23091-haumea.html
solarsystem.nasa.gov/planets/dwarf-planets/haumea/in-depth/
earthsky.org/space/dwarf-planet-haumea-enigmatic-ring-new-insights
www.universetoday.com/121759/10-years-of-haumea/
www.universetoday.com/121851/the-dwarf-planet-haumea/
www.universetoday.com/40370/spot-discovered-on-haumea-rich-with-organics-and-minerals/

Статьи о скандале с открытием
www.newscientist.com/article/dn8033-astronomer-denies-improper-use-of-web-data/
www.newscientist.com/article/dn14759-controversial-dwarf-planet-finally-named-haumea/

Страница Хаумеа на сайте Центра Малых Планет:
www.minorplanetcenter.net/db_search/show_object?object_id=136108

Параметры спутников:
www.johnstonsarchive.net/astro/astmoons/am-136108.html

О сферической форме астрономических объектов:
www.astronomy.com/magazine/ask-astro/2017/08/the-diameter-of-spherical-bodies

Данные о радиусе Земли:
nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html

Снимки Хаумеа 2003 года:
www.infoastro.com/200809/26ataecina-haumea.html

Информация по Япету:
solarsystem.nasa.gov/moons/saturn-moons/iapetus/in-depth/

Кривая блеска Япета:
sci-hub.se/https://www.sciencedirect.com/science/article/abs/pii/0019103574900529?via=ihub

Как измерить массу планеты:
curious.astro.cornell.edu/our-solar-system/57-our-solar-system/planets-and-dwarf-planets/orbits/245-how-do-you-measure-a-planet-s-mass-beginner

Join me on a thought-provoking adventure in my new animated mini-series, Principles for Success. Ive taken my book Principles, and distilled it into a 30 minute ultra mini series that focuses on the life principles that have helped me the most.

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Download his free app: principles.app.link/PFS

ОЧЕНЬ СИЛЬНАЯ ФУТБОЛЬНАЯ ДРАМА! Околофутбола. Драма, преступление
♛Подпишись на Мелодрама Queen www.youtube.com/channel/UC-7YAe1YYXVS_ZxLRwLVblA?disable_polymer=true и смотри лучшие Мелодрамы в отличном качестве!

Фильм о самой закрытой части футбольных болельщиков — околофутбольных хулиганах. Они — самые агрессивные и жестокие представители мира футбольных фанатов. Они — элита околофутбола. Кем бы они ни были в обычной жизни — студентами или банкирами, музыкантами или автомеханиками, на самом деле все они — одна «фирма». Попасть в «фирму» очень сложно, но если ты в ней оказался — это на всю жизнь. И обратного пути нет.

Жанр: драма, преступление
Страна: Россия
Режиссёр: Антон Борматов
Музыка: Ант, Кирилл Горохов
Длительность: 100 мин.

ТАКОЙ фильм никому не найти! ТАЙНА ЛУВРА Фильмы, сериалы HD

www.youtube.com/starmedia Лучшие русские и зарубежные фильмы, сериалы всех жанров.
www.youtube.com/user/starmedia/playlists?shelf_id=43