Триасовый период (рассказывает палеонтолог Ярослав Попов)

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Триасовый период — первый геологический период мезозойской эры. Следует за пермским периодом и предшествует юрскому… Группа палеонтолога Ярослава Попова ВКонтакте: vk.com/popov_yaroslav… Лекции на Радио 1: radio1.news/podcasts/lektsii-na-radio-1-1. В эфире «Радио 1» лекции идут ежедневно в 10.05 и 21.05.
Канал Дарвиновского музея: www.youtube.com/user/darwinmuseumofficial

Supertasks

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The Vsauce Holiday Box is here! Its full of exclusive Vsauce merch, cool science toys, and ALL Vsauce proceeds are donated to Alzheimer’s research!!! ORDER HERE: geekfuel.com/Vsauce

SOURCES AND EXTRAS:

my twitter: www.twitter.com/tweetsauce
my instagram: www.instagram.com/electricpants

Gabriel’s horn:

en.wikipedia.org/wiki/Gabriel's_Horn
blog.plover.com/math/gabriels-horn.html

Gabriel’s wedding cake:

oumathclub.wordpress.com/2015/01/25/gabriels-wedding-cake/
PDF: people.emich.edu/aross15/math121/misc/gabriels-horn-ma044.pdf

Supersolid PDF: people.emich.edu/aross15/math121/misc/love-1989-supersolids.pdf

Zeno’s supertask paradoxes:

en.wikipedia.org/wiki/Zeno's_paradoxes
math.dartmouth.edu/~matc/Readers/HowManyAngels/SpaceTimeMotion/STM.html
www.youtube.com/watch?v=u7Z9UnWOJNY

Staccato Zeno runner with no velocity/acceleration discontinuities: goo.gl/2mYdcT

General supertask reads:

personal.lse.ac.uk/robert49/ebooks/PhilSciAdventures/lecture25.html
plato.stanford.edu/entries/spacetime-supertasks/
mathpages.com/rr/s3-07/3-07.htm
math.dartmouth.edu/~matc/Readers/HowManyAngels/SpaceTimeMotion/STM.html
en.wikipedia.org/wiki/Supertask
www.vordenker.de/gunther_web/achill1.htm

Big book of collected supertask writing: books.google.co.uk/books?id=0AzP9WLLJLcC

The "Mountain Or Valley?" Illusion

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Thanks to Skillshare for supporting this video: skl.sh/MinutePhysics for 2 free months!

This video is about a multistable perceptual illusion, similar to the hollow face illusion, whereby maps or aerial or satellite photos look upside down/inside out, ie, concave (valley) parts look convex and convex (mountainous) parts look concave. Just flip the images around and things will make a lot more sense! Its just because our eyes gauge depth based on the location of shadows, and the sun always casts shadows on the bottoms of things.

Support MinutePhysics on Patreon! www.patreon.com/minutephysics
Link to Patreon Supporters: www.minutephysics.com/supporters/

MinutePhysics is on twitter — @minutephysics
And facebook — facebook.com/minutephysics
And Google (does anyone use this any more?) — bit.ly/qzEwc6

REFERENCES
Twitter posts:
twitter.com/Astro2fish/status/859799730565414912
twitter.com/BadAstronomer/status/859800278358528001

Bad Astronomy Blog post: blogs.discovermagazine.com/badastronomy/2010/05/19/a-lunar-illusion-youll-flip-over/

Multistable perception en.m.wikipedia.org/wiki/Multistable_perception

Top-left Lighting en.m.wikipedia.org/wiki/Top-left_lighting

Minute Physics provides an energetic and entertaining view of old and new problems in physics — all in a minute!

Created by Henry Reich

Rejects from Toms Ideas Board: The Early Years

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Tom has come up with many ideas over the years, but its time to let some of them go.
MATT: youtube.com/unnamedculprit | TOM: youtube.com/TomScottGo

Similar from Matt:
Five Minutes in Matts Mind: www.youtube.com/watch?v=Xdl7VaxdTzA

Pendulum — Slam: www.youtube.com/watch?v=eyAA18es8es
(the bit we were singing was 1m20 in)

Disco carriages in trains: www.youtube.com/watch?v=ObEJk4bAV8M

Pips: en.wikipedia.org/wiki/Greenwich_Time_Signal

A Brief History of Timekeeping | How Humans Began Telling Time | EXPLORE MODE

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#Timekeeping #History #ExploreMode
A lot goes on in just 24 hours. But why is a day divided in 24 hours in the first place? Who decided how we would calculate it?

Today, time is tucked away in our pockets, just an unlock button away. It drives our technology, with atomic clocks being responsible for precise GPS location services and speedy internet search results.

Our ancestors, on the other hand, didn’t have it that easy. Time for them was written in the stars, in the sunrise and sunset, in the moon’s waning and waxing.

So how did we go from looking up to celestial bodies to looking down at our phones for time? What other timekeeping methods did ancient humans use before watches and clocks became ubiquitous? And what the heck is an atomic clock?

You’re watching Explore Mode and today, we are diving into time, and how humans developed technologies to measure it.

01:20 Telling time through stars, celestial bodies, and sundials
02:03 Candle clocks and incense clocks / How did candle clocks work?
03:32 Sexagesimal system explained / Why is time divided in the 60s?
04:45 How do waterclocks work? The clepsydra.
06:13 Origin of mechanical clocks
07:06 How do quartz clocks work?
08:17 How do atomic clocks work?

A Brief History of Timekeeping | How Humans Began Telling Time | EXPLORE MODE

Music:
Willow and the Light, Wholesome, Stompdance and Covert Affair
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
creativecommons.org/licenses/by/3.0/

Medieval Song Village Consort
Always No Copyright Music | Free Music for Everyone

www.youtube.com/watch?v=eZ_r1H9vHkI

Sources:
www.sciencedaily.com/releases/2013/03/130314085052.htm
www.nbcnews.com/science/science-news/ra-romans-used-ancient-egypt-obelisk-sundial-flna2D11826215
blogs.scientificamerican.com/roots-of-unity/the-joy-of-sexagesimal-floating-point-arithmetic/
www.britannica.com/science/sexagesimal-number-system
en.wikipedia.org/wiki/Water_clock
science.howstuffworks.com/environmental/green-tech/sustainable/water-powered-clock1.htm
www.explainthatstuff.com/quartzclockwatch.html
electronics.howstuffworks.com/gadgets/clocks-watches/quartz-watch.htm
science.howstuffworks.com/question40.htm
www.livescience.com/32660-how-does-an-atomic-clock-work.html
www.nature.com/articles/s41586-018-0738-2

Produced by Sofia K.
Edited by Amanda Lee

ПУТЕШЕСТВИЕ ПО САМЫМ СТРАННЫМ ОБЪЕКТАМ СОЛНЕЧНОЙ СИСТЕМЫ

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➥ Подпишись — bit.ly/SUBKosmo
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➥ Группа Вк — vk.com/kosmo_official
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➥ Реклама, сотрудничество — proxam777@gmail.com

СМОТРИТЕ БОЛЬШЕ ВИДЕО:
Космос ►http://bit.ly/plKosmos
Все видео ►http://bit.ly/plKosmo
Вселенная ►http://bit.ly/plVselennaya
Илон Маск ►http://bit.ly/plElonMask
Солнечная система ►http://bit.ly/plSolar

00:00 Вступление
01:12 Титан
10:59 Церера
20:32 Эрида
31:08 Орк
40:40 Кометы
51:45 Астероиды
01:03:17 Девятая планета

Тэги: #Сборник #СолнечнаяСистема #Планеты