Solstice and Equinox - Sixty Symbols

[@DOMin8r1992]

This was great. The lady really knew her stuff and presented it in a wonderful way. Thank you to both you (Brady) and her.

[@VideoNOLA]

Minor corrections: She pronounces the word "analemna". It is "analemma". Later, when describing the motion of the sun around the polar sky, the presenter uses the verb "rotates". The sun actually appears to "revolve" around the north pole.

[@InfiniteLuke]

This is so amazing and well explained, that I watched the whole video

[@stephencampbell2735]

That's saying a lot for modernity haha!

[@themightychickens]

Probably my best spent 11 minutes ever on the internet. Thank you Brady.

[@dentalfl0sstycoon]

This makes me realize how beautiful Earth really is.

[@rottencranberry]

Celestial Mechanics perfectly explained, no equations, no tricky software, just pure intention of making this as simple as possible but comprehensive. Thank you.

[@TheMdc78]

I've been watching sixty symbols vids for the last couple days and I have to admit, I am SO, so so so in love with her

[@th3madhatter106]

She pronounces everything so delicately. Its very nice to listen to.

[@sixtysymbols]

@themightychickens glad you enjoyed it... thanks the astronomers, not me! :)

[@sixtysymbols]

@aMondia yes, I occasionally ask for help on Twitter and Facebook!!! Thanks to everyone who helped!

[@JefPauwels96]

Kind of distracted bt the atlas of creation in the back

[@Jimpozcan]

He did a video on that.

[@andrew_koala2974]

I know Nottingham very well. My Moms sister resided in Mansfield. I recall as a child picking Blackberries and Mushrooms in Sherwood Forrest. Decades ago. They are now deceased, I miss my cousins, as we are now older than our aunts and uncles were when we we kids. I recall rushing for that Shilling to place in the Meter as the Electricity went off.

[@kko9329]

Hi

[@Marij174]

Very interesting video. Thank you !! Maybe the young man could talk a little bit slower? ;-) I found it difficult to understand all he was saying, since english is not my mothers language.

[@Kesensa333]

English is not my Mothers lanuage but it is mine and i had to relisten several many times but then i had a thought, put the subtitles on

[@illuvitarv5]

these kind of videos need millions of views these actually teach you something.

[@DunkeysLongLostSon]

This pretty much proves that the Earth isn't flat.

[@Jiggerjaw]

You haven't heard the full flat Earth theory then. Flat Earthers have a counter argument for this stuff. Sadly, Occam's Razor is lost on them.

[@guardingdark2860]

Occam's Razor and the term "ad hoc argumentation".

[@JohnnyMotel99]

~Flat Earthers have a counter argument for this stuff~ and boy, is it complicated! This video should be mandatory in every school in America.

[@21dolphin123]

this is the best explanation on the internet

[@9208655]

VSAUCE?

[@YoDog8585]

probably one of the best youtube videos ive ever watched

[@andrebolto7104]

What would life b like if the earth wasn't tilted? That would be a great video

[@RahilSethi]

andre bolto More interesting question would be, if we vary tilt of the earth by different degrees, how much would it change the weather patters? There must be an equation or at least a mathematical relation between the two.

[@faramund9865]

It would be spring/harvest equinox all the time. Which means only spring all the time and no other seasons!

[@IlikepurpleXP]

Geez why is everyone trashing this video x.x..if you dont like it, lean "forward" and change it! Some of us actually enjoy this and dont really care whether or not you "learned this back in kindergarten"

[@Fealo31]

hopefully i marry a lady as pretty and intelligent as she is.

[@jayakrishnan26]

daft bes me too hope so

[@themightychickens]

Been subscribed to Sixty symbols for I don't know how long.

[@RockMedved]

Vsauce and Sixtysymbols - some of my favorite things merging together. Amazing.

[@HiAdrian]

This piece of knowledge had always been a dark spot on my mindscape, even though it's more relatable than most other science topics. Well, now i do. Thanks sixtysymbols!

[@bassemb]

Not only is she beautiful on the outside, she's knowledgeable too. All the professors in the videos are a joy to listen to.

[@yaelypower]

Shut up. I was subscribed to this channel way before vsause. this is probably the most educational 11 minute video on youtube!

[@filipeaa320]

I just loooove the way she explains things; just love her!!!

[@majorafan09]

whoa......lots of information.......11 minutes to understand it all..... This is better than school!!! Subbed!

[@rafaelmartinezmori1991]

Excellent presentation . Thank you!!!

[@sixtysymbols]

Getting in a few days early because I am away for the solstice itself!!!

[@lazydaisy649]

Thanks so much for uploading the video.❤️

[@hiafolks]

Her voice is so soothing!

[@AIEmporium700]

those romans are geniouses. Ive been suntanning for years and never noticed the solstice.

[@bbfan77]

I wish this woman was my Geography teacher or something.. it's so easy to listen to her talk. I'm sure my Geography teacher was saying something along those lines once, but she somehow makes it seem more interesting :D

[@chiffmonkey]

I love her mixed accent, great to listen to :)

[@AggravatedAstronomer]

Yay for using Stellarium! I use it all the time when I'm gonna get out my telescope :)

[@ThePedofileBear]

10:13 - 10:23 I completely agree ....

[@haimkichik]

Amazing video!! Thank you so much, from Mexico!

[@Theatheosis]

By the way guys the software she uses is free and is called "Stellarium", available on mac, pc, linux, and many mobile platforms.

[@FlorianFahrenberger]

@kid181 That effect is actually negligible in comparison. The difference in distance is only about 2%, not making for a large change in sun radiation (about 4 percent). And on the south half of the earth, this effect actually goes opposite the seasons, not to a noticeable effect (further away in warm season, closer in cold).

[@zulukydd]

I watched it all, i didnt realise how long it is. interesting stuff

[@1000wrongdecisions]

Thank you thank you thank you. I've always wonder about solstice.

[@daveytay]

Never thought I would watch the whole video!

[@martixy2]

And now I just wanna go and watch Sagan all over again.

[@eduveloper]

@paloskie gracias! Luckily i got VLC installed and will give it a go this weekend.

[@FlorianFahrenberger]

@busterbox I'm pretty sure this is "Stellarium". It's open source and available for most operating systems. Haven't tried it in a long time though.

[@metadaptation]

lovely video as always! thank you brady for your effort

[@AutisticallyPaige]

The programme she is using is called "Stellarium" if anyone wanted to know ^^

[@aMondia]

How nice of the viewers to send in pictures you can use. ;D

[@nicolegarn]

thats so interesting!! i love this!!! i thought it would be boring! but i loooove it!

[@Neueregel]

I am a greek astronomer 2000 years after Eratosthenes , Ptolemeus and Hipparchus and I approve this video on behalf of my ancestors.

[@supervegito2277]

holy crap this is amazing.

[@Tremblay343]

@XxFairyGrrlxX If you're talking about the date at the beginning that wasn't the actual day. She plays with the date throughout the entire video, that's how she gets it where she wants it. She started on the 21st because that's the summer solstice.

[@fireskul98]

Uranus has a tilt that is nearly pointed directly at the sun (almost a 90 degree angle). You should look it up!

[@Zenziba95]

If you wanted to download the program she was using it is called Stelarium and its free.

[@punishedexistence]

I kinda remember this stuff from school, but to see it laid out in such a concise way is really cool, I learned about 3 years of astronomy in about 11 minutes. Thanks!!

[@RaulTheSunshineMan]

Great calculation for that that guy in egypt; just brilliant!

[@jjkul1]

Dear Brady, Could you ask the Physics Guys to give their impressions of 21/12/2012? :D I want to see their impressions on the subject and what they think of the galactic alignment. Thank you, keep up the great job!

[@MeisterDonDon]

This is a really cool thing I've never really thought of. The program really helped with getting the point across. One more thing in life explained =]

[@OriginalThePk]

great video, very entertaining and informative.

[@chrisofnottingham]

@carbronica "I've always wondered why theCoulomb wouldn't therefore be the base unit instead." It is. It just seems to be convention that sometimes we like to used derived units like Amps instead of Coulombs per second while other times, like with velocity, we are happy to talk in meters per second or miles per hour without feeling the need for a new unit.

[@jocax188723]

Stonehenge as a solstice calendar. Well, that IS pretty cool. But I thought it was an intergalactic marker for a large black and green puzzle box called the Pandorica?

[@Somezable]

Knew all of this from living my whole life on the arctic circle with every summer having the midnight sun.

[@RMoribayashi]

Couldn't Stonehenge have been built to observe sunset on the winter solstice? Oh yes, I have to mention Stellarium, the planetarium program she was using. It's a brilliant tool for anyone who is curious about astronomy and it's FREE! It's especially good for people in brightly lit cities. It can give you a good idea what the sky looks like with or without light pollution.

[@yotoyloko]

One question,(1:55 - 2:52) That also explains (in part) why there isn't summer time in the countries that are under the ecuatorial line?

[@GodAwfulUsername]

this is the best one.

[@DamianReloaded]

Astronomy has led humanity since the beginnings of civilization. Almost all important/everyday things, like the names of the days of the week are still related to it. In essence, it was that important to the ancient because of agriculture. Knowing the solstices and identifying the constelations would help them knowing the optimum times in the year to plant/harvest the right crops.

[@CsBence98]

Where was the photo at 9:20 taken? It is interesting how it has "Ráktérítő" written on it in Hungarian.

[@bfguy12345]

+CsBence98 According to the hungarian wikipedia, somewhere in Western Sahara.

[@Choomanama]

@BomberEffect not recorded on june 26th. she just set the date on the computer to show the sun on that date

[@ridaq237]

nice work !!

[@jonrivera]

Well, this is a year's worth of mind blow. Yeah, baby.

[@WeAreMany88]

Whoa... i just dropped my jaw (and my pizza :-) ) when i saw the hungarian text on the Tropic of Cancer sign. Yeah! Go Sixty Symbols!!

[@VBDante]

Excellent Leanback.

[@bassemb]

Agreed, I came here to say the same thing, she has such a lovely and calming voice. Also, that software is really cool. I wonder what it's called. (Haven't finished the video yet)

[@Stickspert]

Everyone uses Stellarium these days. That's pretty awesome, it's really a great program.

[@wilkes982]

this was a really great video soo informative great work guys

[@gatman134]

That's pretty awesome

[@megamillion12345]

this took something i kinda knew about and explained flawlessly. fuck school, i love you, vsauce.

[@zapfanzapfan]

Shout out to Eratosthenes! Measuring the circumference of the Earth using a well, a stick and a sharp mind.

[@williamchamberlain2263]

And a guy with regular pace who didn't lose count

[@altebaran]

Why is this a video.This is standar knowledge that all people know once they are passed the 9th greade!!!

[@linkaut]

btw thats stellarium if anyone wonders what program that is.

[@jeebersjumpincryst]

well... i thought that was fantastic! that guy who thought of how to calculate the earths circ was so clever

[@BassaliskVFX]

@TomMarAlem1987 What happens exactly? If a photon has specific wavelength, a wavelength small enough, so that its energy is big enough, it will give enough energy to a electron to overcome the energy gap in between atom orbits. U may have some Compton scattering involved, but that is a wide very wide subject.

[@Aerlenbach]

That is one nice mac you've got there.

[@chernobila]

@buzzimu I dont know what is it. Same happened to me. I think its her voice. So calm and pleasing

[@AlexIsSmalll]

@sixtysymbols I've always been interested in solar movement. Great video. Can you do a video on the Higgs Boson?

[@Alanabunny]

@sooooooooDark They're saying that he was incredibly close to 2 percent for having so little to work with at the time. It's still very impressive.

[@armarr]

This channel deserves the attention Vsauce is giving it !

[@chrisofnottingham]

@carbronica Crumbs yes! Now that I've looked at it I think I was somewhat perplexed by this many years ago but have since decided to forget all about it. The base unit definition of an ampere does look suspiciously derived to me but from the meter and the kg not the Coulomb. Interesting to note the proposal to define it in terms of Coulombs in the future, with a new definition for Coulombs.

[@DakireProductions]

@extremebeyond probably. I'm not from around there, so I wouldn't recognize the differences in voices, all I hear is a similar accent. Though the pitch even sounds like you to me. But since it's you replying saying it isn't you, I'm guessing it isn't. Thanks for clearing it up! Didn't think you had anything to do with the Cosmos.

[@legendaer]

The name of the software is stellarium (Mac) and its free to download

[@Metalmandy8]

This is fascinating. o_o I want to learn more!

[@Fortheluvofmylife]

Thanks so much for the video! :) I learned a lot! :)

[@uncasualgamer]

@lnwreal9 This only happens for like 20-30 days out of the year, it is not year round. also there is also like 20-30 days of night as well at least thats what i think

[@sooooooooDark]

im probably wrong but didnt she say the distance between alexandria and seren or what it was called wouldve been 1/50 of the earth and then she said they measured it and it was 4% of the earth but 1/50 should be 2% or did i missunderstand something there?

[@sheprd12]

The universe is incredible!

[@txdmsk]

@eordogadam The same picture is used in Wikipedia's article on the Tropic of Cancer.

[@Gustavo0929]

@sixtysymbols can you please make a vid on the green flash?

[@Aleteos]

That's rather impressive software you've got there. What's it called? Any idea how it works?

[@HectorL360]

i am so enlightened.