The Age of the Universe - Sixty Symbols
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- čas přidán 1. 02. 2018
- How do we know the age of the Universe? Featuring Dr Becky Smethurst and Professor Ed Copeland.
Deep Sky Videos: / deepskyvideos
More links and info below ↓ ↓ ↓
Dr Smethurst is the "Sixty Symbols Ogden Fellow", supported by The Ogden Trust.
More Becky videos: bit.ly/Becky_Playlist
More Ed Copeland: bit.ly/CopelandGoesLong
MORE READING:
A gravitational-wave standard siren measurement of the Hubble constant - arxiv.org/abs/1710.05835
Planck 2015 results. XIII. Cosmological parameters -
arxiv.org/abs/1502.01589
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This project features scientists from The University of Nottingham
bit.ly/NottsPhysics
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Sixty Symbols videos by Brady Haran
www.bradyharanblog.com
Music courtesy of Alan Stewart: bit.ly/AlanAlbum
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When I took cosmology, the age of the universe was only 13.7 Gy and now it is already 13.8 Gy. Time sure flies fast.
13.97 Gy. Heretic!
I seem to recall the age being listed as 14.5 Bn back when I was in Uni (1990-ish)
I remember when the entire universe revolved around the sun and included all seven planets. Those were the days!
hpekristiansen it was Tuesday as well!
Now it’s 13.8 billion and one day.
Tuesday, March 6th, give or take a couple hundred million years.
This calls for a discussion of precision vs accuracy.
Sam
I second this
give them some slack... they didn't say if it was in the morning or the afternoon...
I second +12/-8 this.
Of course, they didn't even use the correct length of a year, which is 365.2422 days. They added about 110 million years of error just from that! lol
I wish I had a teacher like Prof. Ed Copeland when I studied. Please keep the videos coming guys. This channel is one of the gems on CZcams.
Dr. Becky is lovely.
I am really enjoying Dr. Smethurst's contributions. Keep up with the excellent videos!
Dr Smethurst is such an amazing addition to the team. And of course, everyone loves Prof Copeland!
what a great moment it is to be notified for a new Sixty Symbols video!! thank you!
7:57 is the probe saying that the rebels are on Hoth
I see prof. Copeland, I press like.
The universe can be measured by how big his smile is
He's so loveable :)
Finally we can celebrate birthday of the universe.
Thanks Becky. Love you.
Dr Smethurst's handwriting could be a font.
Dunno how some people can be that tidy.
Being someone who takes a lot of pride in the neatness of my handwriting, I don't know how people can't be that tidy.
Function over form, Dean.
She’s practically perfect!
@@Qermaq ew
Brady your editing is so on point my man. The way you use editing to tell a coherent story like a script from seperate interviews is really good and makes learning all that more fun!
That are some nice vertical writing skills at 6:19.
Copeland will be giving a talk at my institution this upcoming tuesday. So excited!
How was it?
I could watch Professor Copeland talk about the universe for days
ED IS BACK!!!!! AND ALSO BECKY!!!!!
Edit: also assuming the statistics are accurate, big bang happened on Tuesday... wow!!! Brady is awesome!!!
It was a long time since you did a video combining two interviews in this way. Love it! 😍
You drew that plot so quickly and neatly, even writing lopsided. And a convincing line through a point cloud like that! Wow.
Another great video from sixty symbols!!! One of the greatest science channels on CZcams.
Facinating what we are able to understand through mathematical calculations. Dr Smethurst and Dr Copeland were excellent. I apreciated their breakdowns/explanations.
Becky did a great job explaining in this video. Love these
My favourite topic! Great to see someone I went to uni with on these videos!
Wonderful stuff. Thank you. Dr. Smethurst is the best.
I could listen to Becky for hours.
Possibly your best video. Well done all in producing it :).
At 2:43, the professor mentions that white dwarf stars are a remnant of a "regular supernova." My understanding was that white dwarfs are the end product of stars too small to initiate a supernova. Have I been wrong my whole life?
Probably a mistake on her part. Supernovae leave behind neutron stars or black holes. If any white dwarfs can be produced from supernovae, they must so rare that no references I've looked up ever mention them.
You are very much correct, Richardfrieman.
We need more Dr. Becky
I think this is the most beautifully succinct video you've ever made.
Another great video, Dr Becky is the best :D
I've missed ed doing all that physics stuff instead of these videos! ;´(
Love Dr Becky!
In Dr B we trust 👌👏
"Another great video, Dr Becky is the best ", yeah, and cute too.
Haven't seen the video yet, I just jumped out of bed because I saw the notification of a new video including Prof. Ed Copeland!
this was great, love the depth and fun
This was so fun. What was a dichotomy has become a blurred mess.
It is great to have such major discoveries still being made, even if they won't get me replicators and warp drive.
Loved this video Brady. Well done
Quality content as always my man keep it up
COPELAND FINALLY! :D
Count the rings?
This was a really great video!
Another humbling video. Thank you for this information.
One more awesome video! Thank you for that!!!
3:30 No, type 1a supernova involve white dwarf stars [1]. These objects are the end result of stars like our sun which end their lives *too small* to go supernova. Only with the added mass from a companion star do they go supernova. This happens once. Not twice.
1. en.wikipedia.org/wiki/Type_Ia_supernova
2. en.wikipedia.org/wiki/White_dwarf
I rewatched that bit 5 times before looking at the comments and wondered how that got past Prof. Merrifield. I thought he'd peer review these videos!
PhysicsPolice happy someone else caught it!
Was looking for this. Sounded kinda weird at first, when I watched the video, but then I double checked wikipedia and my instinct was correct
Yeah that weirded me out as well.
Love your space videos so much
fantastic video. one of the best ive seen.
its amazing that people have figured this stuff out!
march 6th is my birthday too.. gotta love Becky & Ed
Absolutely loved this
I so adore Dr Becky :)
Goddamn she can hand-draw nice graphs really quickly!
Ikr! Beautiful handwriting, too!
Thank you a billion times for this great channel (and the others too).
Big Bang... on a tuesday... damn, I would have bet on a Friday.
I ❤️ Dr Becky!
Awesome video thank you
The last bit was really funny. Kudos. Cheers, Russ
Excellent video
Excellent video!
Dr Becky is the best
Eds back!
Great video, good job everyone.
Good to see prof. Copeland :)
great explanation!
I get irrationally excited whenever I see a notification for a new sixty symbols video.
Imperial probe droid sound, nice.
Very nice video.
I so enjoy these videos. All of them, but particularly those that feature Dr Smethurst or Prof Copeland, because they gently lead me to the edge of the bottomless pit of my ignorance (I know, I'm a masochist).
I love the Star Wars reference muttered under your breath. It always bothered me that the film makers didn't bother to google that first
She's great
It was a wednesday my dudes
It was Sunday, it is in the Bible!
I suspect the Universe predates our calendar 😉
Your name is cobalt, you have a pic of dan for your profile, and you frog memed this! Congrats!
Cobalt blue f
EXPLOSION WEDNESDAY
That awkward moment when universe doesn't start on a Monday, 1st January :D
So Tuesday really IS the first day of the week. I'd be darned to have gone to work on all these dreadful Mondays my entire life then!
So perfect, Tuesday.
Never could get the hang of Tuesdays...
whoa watch out here come the young eathers
I love how they pronounce " xxxx - ation " words :D the whole team sounds wonderful. I sometimes show some part of videos such as these to teach my kids about different accents :D
A Tuesday feels about right for a universe to be born on.
Happy birthday Prof. Copeland!
Makes me a bit sad how little I know about the math of astrophysics.
Charlie Clumsy You can learn almost everything on youtube.
That's funny. Back in the 90s there was an episode of Animanaics featuring Death. He said something about the beginning of time. The Warners asked him when that was. He said, "I think it was a Tuesday. Very few people know that."
Dr Smethurst is so lovely and smart.
Well worth all the effort to finally discover the day of the week the universe was born on! :D
I've always been told, if you're going to start something new - always do it on a Tuesday..?
COPELAND! You're why I keep returning
Oooooh, happy birthday, professor!!!
Loved the Star Wars sounds
Really cool
7:21 Dr Smethurst turning Monica from Friends there for a second
gaprilis
“I know!”
lol
Woah, an upload :O
Her handwriting is so perfect it's distracting... in a good way.
If you call that perfect...whatever
One interesting idea is the possibility of finding optical counterparts for black hole mergers. If they could be found, I would think the number of "standard siren" data points would go up by quite a lot.
Unfortunately no such things are likely to exist for black holes. They can even swallow their own Supernova during birth.
Fabulous 🚀
Thanks for the video - fantastic stuff! Do you think you will get into trouble sampling that droid noise from "The Empire Strikes Back" at 7:57? :)
we need WAY more sixty symbols videos
2:46
Are white dwarfs remnants of supernovas? I’m pretty sure white dwarfs come from the out layers of the star slowly evaporating (for lack of a better term) over a long period of time.
You're correct, white dwarfs are not the result of supernovas. It's strange because she even confirms her mistake later, when she talks about 2 supernovas being involved (3:36).
There is also a third way to measure Hubble's constant by analysing the light coming from distant quasars subjected to a strong gravitational lensing. The project is literally called "H0LiCOW" (H0 Lenses in COSMOGRAIL’s Wellspring).
My two preferred Professors on a video!! Its it my birthday? XD
You guys are awesome! Go science!
Thanks. That was a lot more comprehensible than a video on a similar topic that I just watched. I would still like to have all the assumptions involved explained, though, such as that business about the "standard candles". You say something like, "We know how bright they should be." You don't say HOW "we" know that.
I understand the units work out. Can someone explain to me why the inverse of the Hubble constant is the age of the universe?
Tuesday it is!! ... or was :) [great vid, thank you, Becky's cute as ever]
Maybe do a video on negative mass, and if it could be real or what it would be like.
The Big Bang, the ultimate throwback tuesday! xD #tbt
She's pretty :) And smart. Also Dr Copeland is so adorable
U really need to one day say all of your channels!! Seriously! That's like 6 channels!
Gosh....I'm in love