Why is TV 29.97 frames per second?


I look at the historical quirks which gave us TV at 29.97 frames per second. In North America at least. Its a comfortable 25 fps in Europe.

More on that thing I mentioned at the end of the video here:
www.patreon.com/standupmaths

Here is the spherical video I was making with Henry Segerman which made me research NTSC frame rates in the first place:
www.youtube.com/watch?v=Yp12c3-IL-I

Yes, technically, if you divide 4,500,000 by 286 you get a horizontal frequency of 15,734.26573 lines per second. That matches a frame rate of 29.97002997002997… and so old TVs used 30/1.001 = 29.97002997002997…

CORRECTIONS:
— A lot of people pointing out that increasing the number of horizontal lines without increasing the bandwidth would be a loss of resolution. Which is a good point.

Music by Howard Carter
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: standupmaths.com/
Patreon: www.patreon.com/standupmaths
Nerdy maths toys: mathsgear.co.uk/

Stand-up comedy about Equations That Correspond to Vortex Motions (aka "smoke rings”).


From our Festival of the Spoken Nerd show “Full Frontal Nerdy”. Available here: festivalofthespokennerd.com/dvd/

And these places.
ITUNES: itunes.apple.com/gb/movie/festival-spoken-nerd-full/id1144174820
GOOGLE PLAY: play.google.com/store/movies/details/Festival_of_the_Spoken_Nerd_Full_Frontal_Nerdity?id=H5k3yeJESu8
AMAZON VIDEO: amzn.to/2cqDrmN

Our show in London at the Soho Theatre will be the 11 to 21 January 2017. Full details and tickets: www.sohotheatre.com/whats-on/festival-of-the-spoken-nerd

Our complete listing of up-and-coming shows: festivalofthespokennerd.com/buy-tickets/

CORRECTIONS:
— This is a re-upload with the «Slightly Safer For Schools Soundtrack» audio track from the DVD for class use (the censoring is deliberately blatant/badly done). It takes out one naughty word!

Support my videos on Patreon:
www.patreon.com/standupmaths

Music by Howard Carter
Design by Simon Wright

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

How thick is a three-sided coin?


Go check out the puzzles over on Brilliant!
brilliant.org/standupmaths

Use the URL above to help support this video and get 20% off the paid premium versions.

Once you’ve done that: help us calculate the thickness of a three-sided coin!

The bonus video explains how you can get involved. We expanded the audience participation aspect loads after we filmed the main video; which is why a whole second video was required.
youtu.be/xN5_VO7Nbu8

All the links for the various resources are over here.
think-maths.co.uk/threesidedcoin

Here is the form to sign-up and ask nicely to borrow Hugh’s coins.
bit.ly/coinrequest

Buy or print your own cylindrical coins.
www.shapeways.com/shops/mathgrrl?section=Education

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…

Thomas Trueblood and the Ridiculous Marathon: Citation Needed 2x01


techdif.co.uk — Were back! We start with the tale of Thomas Trueblood, rapidly steer off into the 1904 Olympic marathon — perhaps the most ridiculous Olympic race ever — and then have a quick discussion about a man called Jam Handy. Get your mystery biscuits ready.

BONUS MATERIAL — Gary Spots an Ice Cream Van: youtu.be/a5Q04hmXmjY
THE FULL PLAYLIST: www.youtube.com/playlist?list=PL96C35uN7xGIo2odDuuPeYtb7BtQ1kBhp

TOM is @tomscott and at tomscott.com
GARY is @garybrannan
MATT is @unnamedculprit and at mattg.co.uk
CHRIS doesnt do this social media nonsense.

Стробоскопический эффект.


Наблюдение вращающихся тел и измерение частоты вращения с помощью стробоскопа.

Гервидс Валериан Иванович — доцент кафедры общей физики МИФИ, кандидат физико-математических наук.

Космос, ты нас слышишь?


Мой плейлист дня: ya.cc/5X0Zg

Канал «Космос Просто»:
www.youtube.com/c/КосмосПросто

Лайв канал с бэками и стримами:
www.youtube.com/user/MrTopatella

Патреон:
www.patreon.com/utopiashow

Группа ВК vk.com/utopia_show
Поддержи наш проект:
vk.com/app5727453_-96007970
ВК vk.com/topatella
Инстаграм
www.instagram.com/topatella
www.instagram.com/arristarkhova
www.instagram.com/aleksey_popadinets

Материалы:
goo.gl/UqVNWf

Production Music courtesy of Epidemic Sound!

Беседа Стивена Кольбе́ра и Нила Деграсса Тайсона в Академии Монклер Кимберли [Vert Dider]


В этом интервью 2010 года за полтора часа Стивен Кольбе́р и Нил Деграсс Тайсон успели обсудить множество тем: последние громкие открытия в науке и вопросы научной этики, что такое «красота в науке», и как правильно воспитывать детей, чего терпеть не может Нил Деграсс Тайсон, и что не так с фильмом «Титаник». И многое, многое другое.

Перевод: Алевтина Поминова, Юлия Яковлева
Редактура: Юлия Яковлева, Алевтина Поминова
Озвучка: Дмитрий Чепусов, Александр Качкин, Александр Штанг, Маргарита Корш
Монтаж звука: Александр Штанг
Монтаж видео: Александр Штанг
Обложка: Андрей Гавриков

Переведено и озвучено: vertdider.com

Сайт студии: vertdider.com

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/

Источник: goo.gl/TlGuEy