This thing is -270°C and is EVERYWHERE

Рет қаралды 817,268

Күн бұрын

Download the PBS Video App: www.pbs.org/pbs-video-app/
The universe is microwaving itself. A mystery signal discovered in the 1960s led to a Nobel prize.
In this video, Dianna explores one of the most mysterious discoveries in physics - a constant microwave signal that seemed to be coming from everywhere in the universe. It turned out to be light from an unusual process 13.8 billion years ago.
Special thanks to our Sally Ride level patrons: Alejandro Gutierrez, Brian O'Connell, Darkbit, Dave Butler, David Cichowski, Edi, Fabrice Eap, Henning Bitsch, Kenneth Hunter, Margaux Lopez, and Vincent Flores.
Join the Physics Girl Patreon community! ►► / physicsgirl
Check out MinutePhysics - Why do compressed air cans get cold?
• Why Do Compressed Air ...
If you liked this video check out these:
Why is the universe flat?
• Why is the universe flat?
How the Edge of our Galaxy Defies Known Physics
• How the Edge of Our Ga...
MANY thanks to: Nick Lucid, Katie Mack, Derek Muller, Henry Reich, Thom Ory and Edward Wright for helping with this video!
Thanks to Levi Butner for inspiriting the idea for this video by asking me WAY too many questions during work! :)
physicsgirl.org/
/ thephysicsgirl
/ thephysicsgirl
/ thephysicsgirl
Creator/Host: Dianna Cowern
Editor: Levi Butner
Writing: Valerie Bentivegna
Research/Copy Editing: Dianna Cowern
Sources:
Temperature and wavelength of original CMB:
www.astro.uvic.ca/~jwillis/tea...
www.astronomy.ohio-state.edu/~...
ESA Planck References:
www.esa.int/Science_Exploratio...
NASA WMAP Reference:
map.gsfc.nasa.gov
Interview with John G. Cramer (via email)
kipac.stanford.edu/highlights...
Nobel prize photo - Alexander Mahmoud 2018
www.aps.org/publications/apsn...

Пікірлер: 2 300

@physicsgirl 4 жыл бұрын

Yes this is a reupload. I fixed some errors in the video. Why were there errors, you ask?! Making frequent science videos is a complicated process: - I don't know everything in physics - Sometimes I work too fast and the facts suffer. Plz send your thoughts and prayers to the facts - I don't know how to spell homogeneous

@gustavgnoettgen 4 жыл бұрын

No problem! It's h, o, m, o, g, e, n, e, o, u, s.

@TMnFL 4 жыл бұрын

I appreciate that science communicators like yourself and Kyle Hill of Because Science don't pretend to know everything and actively say as much.

@EyesOfByes 4 жыл бұрын

@obo2881 4 жыл бұрын

Physics Girl You’re only human!

@petero6471 4 жыл бұрын

This is how science works. Errors are made and corrected. Our understanding both personally as well as for all humankind changes. Science grows. Congrats on doing the scientifically right thing.

@aitchpea6011 4 жыл бұрын

I remember watching a documentary about those two guys, I thought it amusing how they referred to pigeon poop as "white dielectric material"

@samsowden 4 жыл бұрын

they probably thought it was amusing too

@gauravjha8938 4 жыл бұрын

😅...i wonder what they called their poop as then...? Yellow Multielectric Material...🤪

@Call-me-Al 4 жыл бұрын

@@gauravjha8938 you need to go to a doctor, that is usually a very serious symptom.

@catdisc5304 4 жыл бұрын

@@gauravjha8938 idk, you should change your diet. Human poop isn't supposed to be yellow...

@catpoke9557 4 жыл бұрын

@@gauravjha8938 Your poop is.. yellow?

@edrumsense 4 жыл бұрын

It's been so EVERYWHERE that you don't need a Where. You don't even need a When. That's how EVERY it gets.

@greghmn 4 жыл бұрын

We can make a religion out of this!

@miratparmar6779 4 жыл бұрын

Just a reminder: ThE SuN Is A DEaDlY LaZEr

@edrumsense 4 жыл бұрын

@@miratparmar6779 it's a STAAAAAAR

@miratparmar6779 4 жыл бұрын

@@edrumsense Shame he doesn't make more videos, huh?

@edrumsense 4 жыл бұрын

@@miratparmar6779 So sad :-(

@jollyjokress3852 3 жыл бұрын

The most interesting channels are always about physics.

@laikapupkino1767 2 жыл бұрын

And some of the most ludicrous comments (I don't mean yours) are about physics as well.

@MaryAnnNytowl 2 жыл бұрын

@@laikapupkino1767 indeed - some under PG's comment about this being a re-upload are... wow. Like they're on an acid trip as they type their comment, or having a stroke. They're _bad!_

@thomasewing2656 2 жыл бұрын

Kinda hard to avoid phyzzicle stuff! (God).

@ScienceCommunicator2001 2 жыл бұрын

Chemistry channels: hold my ethanol!🍺

@jop1093 4 жыл бұрын

"Before there were days" "Because there was no Earth yet" I loved that!

@1SpudderR 4 жыл бұрын

Jo P Hmm.....You/She Are surmising that there was no Earth yet! Science keeps changing it’s mind on everything...Maybe it is all a simulation, Therefore “The days before” no longer applies!

@zapfanzapfan 4 жыл бұрын

Or rather everything was day because there was light but no Earth to cast a shadow :-)

@1SpudderR 4 жыл бұрын

zapfanzapfan Whose eyes to see the light?

@zapfanzapfan 4 жыл бұрын

@Robert Rudd The customers of Big Bang Burger?

@1SpudderR 4 жыл бұрын

zapfanzapfan Hmm...Always wondered why we have the Equator...the centre of the big bun!

@bassholic705 4 жыл бұрын

"Alas, it was not poop..." Dianna Cowern 2020

@TommoCarroll 4 жыл бұрын

A quote that shall go down in history!

@Tore_Lund 4 жыл бұрын

@@TommoCarroll Why would they even think pigeon poop would make noise in the first place? They were physicists, so they did know that poop would only attenuate such a signal, not cause it???

@DaBlondDude 4 жыл бұрын

A fame-worthy quote for sure lol

@erictayet 4 жыл бұрын

Surely a different poop from the ones from CERN & the LHC. 😉

@krissp8712 4 жыл бұрын

Well, you never know. Pidgeons could have accumulated radioisotopes or something ridiculous. Just keep the equipment clean and in working order :)

@devsullivan 4 жыл бұрын

A really underrated part of this video is how you take time to explain all the science-y jargon (fancy words). Also, it's always helped me conceptualizing the red-shift to think about an ambulance moving towards or away from you. If you listen to the sound next time an ambulance passes, it will sound deeper (longer waves="red shift") as it moves away from you than when it moves towards you!

@cush6827 7 ай бұрын

You mean to say, she is dumbing everything so far down that even US-Americans could understand the matter at hand.

@Rowan_G_Link 4 жыл бұрын

"There is a small percentage of the snow static you can see is due to the CMV" I immediately go to my grandparent's old TV and turn it on to see for myself. :D

@derlinclaire1778 3 жыл бұрын

I did that over 35 years ago,friends.

@roytee3127 3 жыл бұрын

If you really do that and stare hard enough, you can see all sorts of patterns. Troops of snow dots marching across the screen. I used to see oval-shaped disks slowly spinning around on a 45 degree axis. You can see anything you want, really.

@enemyterritory8206 3 жыл бұрын

@@roytee3127 i once saw a little man running and eating mushrooms getting bigger and saving princess...

@speculesgorgoth4055 3 жыл бұрын

Didn't out ever watch poltergeist? Don't watch static.

@albertchurchill4845 3 жыл бұрын

I watched a documentary that detailed the TV thing. Basically said that with the brightness turned down 1% of the snow was cosmic background radiation.

@duchi882 4 жыл бұрын

_"There's this thing that's all around us. Literally everywhere at all times"_ *Me:* Duolingo

@vansantos5772 4 жыл бұрын

The force is all around us... it binds us and holds us together... Star Wars had it right.

@roichir7699 4 жыл бұрын

@@vansantos5772 Use it wisely to make popcorn or heat soup.

@dennisweaver5485 4 жыл бұрын

Related to the Higgs Boson?

@tom_flew 4 жыл бұрын

oh, god?

@animejoy696 4 жыл бұрын

Trivago?

@lokeshlkr 4 жыл бұрын

5:02 "back in the day, when there were no days."

@atomaalatonal 4 жыл бұрын

Lokesh Kumar which leads to the question what time exactly is? and why that concept of time was mathematically sucha successful story, even when it was just an idea.

@probably_siyun 4 жыл бұрын

@@atomaalatonal personally, I think time was onlymade for when doing things when the egyptians were a thing, how long would it take? time it, how long will the stones to come here? time it, makes things efficient and in order...

@1SpudderR 4 жыл бұрын

Lokesh Kumar Well at least she is telling 12 year olds about the 1960’s.

@fvckyoutubescensorshipandt2718 2 жыл бұрын

I wish I had a time machine to go back to when the universe was 25C everywhere (roughly 15M years after time 0). I wonder if the pressure was also 100kPa instead of near vacuum. It would be nice to go on a spacewalk in one's shorts. Or space streak if you're really feeling adventurous. Granted no stars yet so might not be much to see. Oh yeah, no oxygen yet either, oops.

@sams.1597 2 жыл бұрын

Underrated comment right here!

@Djieff 3 жыл бұрын

First time watching you. I really like the visuals and the way you explain things. It makes it really dynamic. Good job!

@randybehrmann5454 4 жыл бұрын

I learned about the Holmdel horn antenna probably 25 years ago. I remember the theory about the pigeon droppings being the cause of the interference, but to no avail. I like watching your videos because you make the information fun. Sharing information with great enthusiasm and a huge smile make it very enjoyable. Great job Dianna!!

@georgetrapp6666 4 жыл бұрын

Thanks for that. She mentioned New Jersey, but never the specific place, Holmdel (also home of the Garden State Arts Center concert venue). Yours is what I was looking for in the comments!

@richlaue 4 жыл бұрын

I could see this antenna from my bedroom window. 5000 people worked in one building which more than doubled Holmdel's population during the day.

@1SpudderR 4 жыл бұрын

Randy Behrmann Hmm..She is stuck in the 1960’s....Not the 1995’s...Seventy years on .....still no change here then!

@dr.maddie3618 4 жыл бұрын

Every time I think about how complex yet beautiful our universe is, it gives me goosebumps.

@johnm.v709 4 жыл бұрын

Universe - Only two things 1. Space 2. kzfaq.info/get/bejne/d5mDhsletdWml2g.html

@beaubeaukitty5301 4 жыл бұрын

That's just a rash from the plasma storm it'll clear up when the sun runs out of helium.

@waqasahmed3115 4 жыл бұрын

@@johnm.v709 i mean its dangerous out there only earth is a safe planet.

@1SpudderR 4 жыл бұрын

Dr. Maddie Just count the goose bumps...or? Is it a rash? Or did I really shiver all over or was it something cold that I did not realise I touched it? Oh I know! I just ate an ice cream with chocolate covering and it was warm..otherwise it would have melted. Did I really have little dimples all over the ice cream as well....Better take An Echinacea just in case...or will that give me more goose bumps....or is it a rash that will react against My echinacea...better take a pill just in case my goosebumps are really the new flue virus! Ah I know I have been dreaming all along!

@1SpudderR 4 жыл бұрын

Dave Alexander GOD....Go On Dave......Dave On Gravity......Great Overriding Deity!

@parthapratimlala6751 3 жыл бұрын

Your narration is amazing. Even non-physics persons will enjoy & learn.👍👍 Truly " happy physicsing ".

@jh61 4 жыл бұрын

@1:24 Drops THX sound to induce chills from CMB. :) that was cool.

@AndrewTaylorPhD 4 жыл бұрын

"This thing is -270°C and is EVERYWHERE" Is it my ex?

@benchasinghorizons9428 4 жыл бұрын

how many times are you going to make this same joke

@AndrewTaylorPhD 4 жыл бұрын

@@benchasinghorizons9428 ...once?

@crazyeye1 4 жыл бұрын

Looks like Ben is dating you ex now m8.

@Lloyd.B 4 жыл бұрын

Dead

@shadowmanLX1X 4 жыл бұрын

Yes

@christiaandijkstra2050 4 жыл бұрын

That purple book on your shelf really says it all: “We have no idea.”

@shambosaha9727 4 жыл бұрын

Woah

@ImRandomDude 4 жыл бұрын

what an observation, here take a nobel prize for it

@dundermifflinity 4 жыл бұрын

I have the audiobook. It’s very good... and very humbling.

@guigaingamkamei9654 4 жыл бұрын

Wow man ur eyesight

@jjeherrera 4 жыл бұрын

By Jorge Cham. Great cartoon book!

@badgerpa9 4 жыл бұрын

You are very fun to watch, love your videos so I am watching them all again. That noise is a pain for the microwaves for communication between buildings, etc.

@mtw777 4 жыл бұрын

This was a really well put together video! Love you physics girl!!

@jmunt 4 жыл бұрын

8:38 that "Tha's fast" made me smile

@1977jelliott 4 жыл бұрын

My 12 year old daughter refuted my mum when my mum was on a rant about how you shouldn't open the microwave oven door without turning it off first, because the radiation is dangerous... my daughter's words, "Clearly someone doesn't know the difference between ionising and non-ionising radiation!"

@mastershooter64 4 жыл бұрын

microwave in small amounts won't do anything at all because as your daughter said it is non ionising but when large amounts of it are present like the microwaves coming from a microwave oven in that wavelength would make your water molecules and boil you from inside out but i imagine there wouldn't be any microwaves being emitted when its finished microwaving you've got a smart daughter

@deluxeassortment 4 жыл бұрын

Smart kid!

@deluxeassortment 4 жыл бұрын

@@mastershooter64 You'd have to be inside the resonation chamber or have a microwave laser pointed at you for it to boil your flesh or even heat up your molecules.

@adamweaver8533 4 жыл бұрын

And then she was grounded....

@mastershooter64 4 жыл бұрын

@@deluxeassortment but why is there a metal plate full of tiny holes smaller than the wavelength of the microwaves behind the glass ? Is it like only partially safe without it ?

@timothystockman7533 4 жыл бұрын

I am old enough to remember when the cosmic background microwave radiation was discovered. I was in grade school at the time. The space program was really exciting at that time, and anything to do with space was fascinating to me. At the time, the science textbook I learned from presented the big bang theory alongside the steady state theory. but with discovery of the CMB the steady state theory fell out of favor.

@miguelnovais3878 4 жыл бұрын

I love the passion in your reactions! You truly are into science. Keep it up Physics Girl!

@sinebar 4 жыл бұрын

One interesting fact about the Cosmic Microwave Background Radiation is that it would become lethal for any astronauts traveling near the speed of light because at that speed the CMB is blue shifted from microwave to the gamma end of the electromagnetic spectrum. There would be no way to shield against the gamma radiation. This would actually be a huge problem and make light speed travel prohibitive.

@beastlybuickv6402 4 жыл бұрын

I know, right? They can make anything look easy on Star Trek. BTW I think the moon landing was an utter hoax. We are a backward species.

@senkottuvelan 4 жыл бұрын

What? Really?

@coopercoldwell 4 жыл бұрын

Upon doing the math using Special relativity and Doppler shift, an astronaut moving at 99% the speed of light observes the frequency of the CMB increasing by a factor of about 14.1. This means the astronaut “sees” the CMB has a frequency of ~1600 GHz, whereas gamma radiation is in the Exahertz scale. This is hardly more dangerous than the original CMB to the astronaut

@mitseraffej5812 4 жыл бұрын

Beastly Buick V6 . Yes we are a backward species, if the Apollo travel time to the moon was approximately 3 days that requires an average speed of 0.0005% light speed. That is around 5400 km per hour. About the speed an advanced anti aircraft missile flies at. Don’t forget the missile flies through the air. So really flying to the moon is not such a feat after all. In actuality it was quite a feat, certainly more than pea brained twits like yourself can comprehend. To help you understand how close the moon is compared to distances in your Star Trek fantasy land, a trip to the nearest star other than our sun at 0.0005% light speed would take 800,000 years. Maybe our pre human ancestors were more advanced than we think and have just arrived at Alpha Centauri.

@beastlybuickv6402 4 жыл бұрын

Mit, I was only trying to be funny. 😳

@shauncarter924 4 жыл бұрын

Dude I love this. Your delivery and presentation would’ve come in wicked handy in my physics class in college lol. Kudos.

@sheldonwheaton881 3 жыл бұрын

Isn't that what caused the "static" on old TV's? When I heard that, I thought that was awesome!

@alcyonae 2 жыл бұрын

Only 1% of it :)

@TheBurt57786 2 жыл бұрын

You do such a good job of explaining complicated things. Awesome teacher 🤘

@Mark748541 4 жыл бұрын

One of my favorite things I learned about CMBR in undergrad physics is what it means to detect a uniform temperature, no matter where we point the detector. As I remember it, the uniform temperature is a critical piece of evidence for the Big Bang. If it wasn’t an explosion from a point source, then we’d be able to detect different temperatures across the background - but since it’s a uniform temperature no matter where we point the detector, then the universe is expanding at the same rate in every direction, and therefore is the result of a Big Bang. I was hoping you’d mention that, and now I’m wondering if I have it wrong. Also, thank you so much for making these videos!

@MaryAnnNytowl 2 жыл бұрын

No, you're correct, as best I understand it. I watched a video on the subject by Fermilab earlier, and they did mention that.

@bobblue_west 2 жыл бұрын

There's an lecture video about the slight temperature differences in the CMBR. Below is the link with the time set to the section of the video where they talk about the temp differences (tiny amounts K) and why they are essential. kzfaq.info/get/bejne/Z9Kffbeqm8izpWw.html

@prathamhalkatti6438 4 жыл бұрын

I was just reading " a brief history of time " which also had this info and I found your video , what a coincidence

@GTAVictor9128 4 жыл бұрын

Hey, me too!

@avidnongetit8710 3 жыл бұрын

No coincidence.. read up on this topic.. either you will help 1 person or many.. if it comes up 1 more time equalling 3x really pay attention.. Yes I know how I sound.

@PeterSedesse 3 жыл бұрын

Because the google algorithm can read minds.

@yusupab3377 3 жыл бұрын

OMG KZfaq recommended to me this video exact while I'm reading this book in this chapter. Wow

@pleaseunsubscribeme8533 3 жыл бұрын

Yes

@ikijiigoku 4 жыл бұрын

I love your videos. It's wonderful watching someone be so excited about science.

@silvermica 4 жыл бұрын

4:14 - wait. Dry shampoo? I’m sorry, I realize that the origin of our existence is pretty important, but I really need to know more about this dry shampoo you speak of.

@karanbirsinghbhullar 4 жыл бұрын

Its soap dry shampoo is soap

@bmerigan 4 жыл бұрын

@@karanbirsinghbhullar No it really isn't. It's corn starch and a number of other things in an aerosol can. Designed to be sprayed on hair where it attaches to the oiliness, then can be brushed out.

@johnchandler1687 3 жыл бұрын

You can use flour like my granma did. Both need complete brushing out though.

@roytee3127 3 жыл бұрын

@@bmerigan Good explanation.

@druid139 3 жыл бұрын

@@johnchandler1687 wouldn't it just be easier to wash it?

@DyslexicMitochondria 4 жыл бұрын

How do you organize a space party? You planet. Edit : I've also recently started a KZfaq channel based on science.

@srajanskgupta 4 жыл бұрын

Ba dum tss

@emilferrer0211 4 жыл бұрын

alright you may enter. 😎

@ploppyploppy 4 жыл бұрын

I wouldn't bother going though, it's a rubbish party - no atmosphere.

@alveolate 4 жыл бұрын

how do you leave a space party? you microwave goodbye to everyone in the cosmic background.

@beastlybuickv6402 4 жыл бұрын

😂😂😂😂😂😂

@BorisNoiseChannel 4 жыл бұрын

13,5 billion years ago a cosmic egg was put in a microwave oven, making a universal mess.

@patrickmccurry1563 4 жыл бұрын

Matter is the small yolk, and dark matter is the transparent albumen. The shell bits are simply beyond the edges of the observable universe.

@roichir7699 4 жыл бұрын

Sounds plausible. Hence the cosmic egg theory.

@oldschoolman1444 4 жыл бұрын

What came first, the chicken or the egg? ...lol...

@thhseeking 4 жыл бұрын

@@oldschoolman1444 Always the egg :)

@optimuscprime 3 жыл бұрын

one of my old trucks was a source of am radio signal. It was weak but I could hear the engine running thorough the walkman I had at the time.

@Maeyanie 4 жыл бұрын

Haven't watched the other video on it which you suggested, but compressed canisters like that don't really get cold because of compressed gas expansion so much as the state change of the propellant (usually propane, butane, or a mix of the two) boiling from liquid to gas. Which I guess is also expansion, rather different from what you were talking about when you made the analogy.

@rogerjones332 4 жыл бұрын

She blinded me with science, and hit me with technology

@Lobos222 4 жыл бұрын

Ironically it sounds like you are trying to explain you were hit by a laser guided bomb.

@luv3daysgrace1 4 жыл бұрын

It’s poetry in motion

@1SpudderR 4 жыл бұрын

Roger Jones Hmm...Blinded by Science.......Move On From the 1960’s my friend....That is all this is about!

@1SpudderR 4 жыл бұрын

Sweet Leaf Hmm....Yep....Science knows 1% of what is to know...knows 99% of what is to know, but knows 0% of what is Unknown! Blinded by the Unknowns Of Science, And Scientists....Who keep changing their position on Everything anyway---Even Though it is only an assumed 1% of the unknown 99%....Get your Flue jab....even though there are millions of unknown flue types out there! One of you might? Benefit from the unknown’s Of Science......Maybe?

@1SpudderR 4 жыл бұрын

Sweet Leaf Hmm...Tea.....Never mind .....The 80’s is long gone or had you not noticed. Prefer coffee myself!

@steveegbert7429 4 жыл бұрын

Dianna, I thoroughly enjoy your videos and look forward to each one. You explain things in such a way that is understandable. It still make my head hurt trying to wrap my brain around some of it, but I hope you keep giving us this great content for a long time!

@michaeltuz608 4 жыл бұрын

Just discovered your channel and love it! Thanks!

@diggerdave51 3 жыл бұрын

Hey, Physics Girl, how about a video on Phase Transition ?? Love your channel and enjoy all the videos !!!

@RealRuler2112 4 жыл бұрын

I remember learning about this in school... given that it was in the 60s, they immediately thought it was something nefarious that the Russians were doing - height of the Cold War.

@pieterbezuidenhout2741 3 жыл бұрын

Being ' Scared ' of the Russians they're always blamed by the Yellow bellies.

@RealRuler2112 3 жыл бұрын

@@pieterbezuidenhout2741 You know nothing of history, huh?

@thursoberwick1948 2 жыл бұрын

@@pieterbezuidenhout2741 The Soviets had some seriously dangerous technology and the west didn't know how much. We know the USSR had an inefficient system, but it did have decent scientists (cough, post-Lysenko) and had satellites, jamming technology and WMD. And no, not all of it was stolen, they innovated some things too. Thirty plus years ago they were seen as a serious threat.

@tbirum 4 жыл бұрын

I found Simone and she led me to you. Subbed to both of you. You too make KZfaq so much better. Keep it up. love your videos.

@doc2590 2 жыл бұрын

it's so good to see and learn about this stuff now on youtube. for years unless you went to uni and studied physics etc most would have no idea this stuff exists. thanks for posting this very interesting information. I remember when we only had four tv channels to chose from, and the most interesting thing on was Gilligan's Island.

@michaelroy1631 2 жыл бұрын

Fun fact - the "temperature" of the background (2.7 K) corresponds to a light frequency of 56 GHz. That's actually *more* energetic than a typical household microwave oven (which operates around 2.45 GHz, the same as a lot of wifi devices). If you could concentrate the CMB with a giant microwave magnifying lens, you could actually heat up food (or pop popcorn) with it! (e\ the 2.45 GHz of your wifi or microwave has an equivalent temperature, via the Boltzmann constant, of only 0.12 K)

@FabioLeprechaun 4 жыл бұрын

In the time of the recombination, the light that was released was a pale shade of orange (rgb 255, 209,163; hex #ffd1a3). #TheBlackIsTheNewOrange

@charlesdahmital8095 4 жыл бұрын

According to Procol Harum it's actually "A Whiter Shade of Pale".

@FabioLeprechaun 4 жыл бұрын

@@charlesdahmital8095 The radiation temperature of the recombination was 4000K, which gives a pale orange.

@charlesdahmital8095 4 жыл бұрын

@@FabioLeprechaun OK 2 points here- 1) Do you know who Procol Harum are? 2) Your calculation of the color chart at 4000k being pale orange is based on current cosmological conditions. Pressures at the time of the recombination greatly exceed those now experienced and may have drastically altered wavelengths at that time giving a different 'color' for temp. Just a thought.

@ohtheblah 4 жыл бұрын

Pumpkin spray tan again today Mr. President? "No they keep making fun of me. Let's go with see me pee kale orange." Sir, I think you mean CMB pale orange. "No CMB is fake news from China with their new fake huuuge antenna. It's actually a very tiny antenna, so tiny, and used to steal Fox News from DirecTv. It's see me pee. I love pee, people love my pee, it's orange and tastes like tang. I have the best pee, best pee. Now I want you to pee all over me and don't miss a spot." Sir, when are you going to deport me like you promised...

@ohtheblah 4 жыл бұрын

@@illumiNOTme326 Unlike your cousin when you two get together, finishing is not hard for you

@TheRealMrRobles 4 жыл бұрын

Thank you, I love how you explain science!

@thomasewing2656 2 жыл бұрын

She's so respectful of our vast knowledge and years of training: Phyzzlers! lol

@mscottveach 4 жыл бұрын

ohhhhhhhh, it's physics-girl! all this time, i thought it was like, "physics, girl, don't even get me started!"

@kaanaknc5039 3 жыл бұрын

get out

@tonysantos6345 2 жыл бұрын

I once had an anxiety crisis and heard an incredibly loud white noise that lasted for almost one minute. No one else in the house could hear it.

@thairoi8382 4 жыл бұрын

Waited for this for days

@utkarshanand9706 4 жыл бұрын

“I get chills when I talk about it.” Meanwhile, me sitting with a poker face 😑 unmoved.

@gkanupriya 4 жыл бұрын

My dark soul smiles

@micecdnwo 4 жыл бұрын

I'll take things that didnt happen for 400

@Ernireg3 2 жыл бұрын

I wish we had teachers like Physics Girl back when we were in school. I would've learned soooo much more and probably would've became an astrophysicist myself. *sigh* Thank you for explaining all of this in such a great, interesting and fascinating way. Much love from the Dominican Republic!

@stalker323232 4 жыл бұрын

the CMB is not everywhere in the universe at all times, but omnidirectional. that is a big difference, as you can shield yourself from it like from any other kind of radiation. make a cube out of metal walls --> no cmb inside the cube. now dark energy on the other hand ...

@Thessalin 4 жыл бұрын

1:58 - I stop moving 1:59 - I can move again. Whew.

@SomeBuddy777 3 жыл бұрын

🚦😂🤣😅

@acebasher1st360 3 жыл бұрын

8:28 Yin-Yang

@PreppySpongeBob 2 жыл бұрын

I love how she explains the complicated words it’s very helpful lol

@macs787 3 жыл бұрын

The age of the universe is determined using two different methods: 1- By studying the oldest objects within the universe . And 2- By measuring how fast it is expanding. But can't we just measure what we can see, or rather what our instruments reach? What if there's more Universe beyond the, well, Universe and we simply can't see it and therefore measure because the light is too far and expanding too fast to reach us?

@unvergebeneid 4 жыл бұрын

"This thing is - 270 degrees C and everywhere." Ooh, ooh, I love Jeopardy! I got this one: What is the cosmic microwave background? Did I solve Behind the Stars 500?

@jesseroberts1608 4 жыл бұрын

That fact that there is an absolute way to measure velocity makes me very happy and I don’t know why.

@michaelsommers2356 4 жыл бұрын

It is not a way to measure an absolute velocity. It is a velocity relative to the CMB.

@Filete3 4 жыл бұрын

Great (re-uploaded) video, thanks for the science! A thing I don't get is: if it happened that long ago, how come it is still all around everything? Shouldn't it have "passed-by" already?

@thomasherbig 3 жыл бұрын

Excellent explanation of this very complex subject! Another way to think about the cooling of the CMB is that the expansion of space stretches the light, increasing its wavelength, decreasing its frequency, and decreasing its temperature. Very cool! (Cool? - no, super-cold!)

@esntlaman3433 4 жыл бұрын

Did anyone else also got the notification of this video few days ago? Or is it just me Edit thank you guys i have never got so many likes thank you

@aneeshk9588 4 жыл бұрын

Like 2 days ago?

@alveolate 4 жыл бұрын

yea i got it too and i left it in a tab for a while but when i got back to it the video was unavailable. probably some last minute editing.

@esntlaman3433 4 жыл бұрын

@@alveolate yeah think so

@puppet8225 4 жыл бұрын

She said it in Twitter. It has some mistakes in last upload

@admiralteddy 4 жыл бұрын

It was taken down and reuploaded as it contained errors

@jkobain 4 жыл бұрын

Wait, is it a re-upload?

@joaquins90 4 жыл бұрын

That was my reaction, I don't know what's going on...

@CrypticHashing 4 жыл бұрын

I think so

@vansantos5772 4 жыл бұрын

The last video, from December, talks about a similar topic... Dark Matter and she touches a bit on Cosmic Background Radiation... not a re-upload.

@jkobain 4 жыл бұрын

Well, I don't mind watching this once again. Because why not!

@jkobain 4 жыл бұрын

@@vansantos5772 here: „Physics Girl uploaded: This thing is -270°C and is EVERYWHERE 4 days ago” So…

@delliscool4924 3 күн бұрын

Please recover soon and come back to us Physics Girl , the world needs you.🥺

@michaelmcdonald8877 3 жыл бұрын

I am, sadly, one of Sheldon Cooper"s "Dirt Diggers" and have been so for almost 40 years (B.S. Earth Sciences, Penn State 1981 and Georgia Tech, M.S. Seismology, 1991). Thus, I note that I am very grateful for your funny, but very educational video shorts. Thank you and best wishes!

@bsjeffrey 4 жыл бұрын

maybe the big bang was a failed attempt by god to make popcorn.

@beastlybuickv6402 4 жыл бұрын

😂😂😂😂😂😂

@massimookissed1023 4 жыл бұрын

kzfaq.info/get/bejne/iNN0bL2IqbvXfo0.html (22secs)

@theintergalacticgamers7401 4 жыл бұрын

Wasn’t this video uploaded about a week ago or 4 days ago. Love your videos

@mikeschmidt9298 3 жыл бұрын

I heard somewhere that the CMB can be used to estimate the size of the entire universe. Not just the visible universe. How is it then that we can see the CMB everywhere, but we know there are galaxies that we will never be able to see?

@tomerwolberg37 3 жыл бұрын

The cmb can't be used to estimate the size of the entire universe, the best it can do is estimate the curvature of our observable universe which might indicate the size of the universe, but not really since we can't actually see what's behind the observable universe to confirm this.

@ba6124 Жыл бұрын

Hello physics girl I am impressed by your ability to describe such different topics in physics. Many of your videos I have watched and my knowledge has been pieced together into a good overall picture. Now I have some curious questions that I hope you want to answer about this video. 1.It seems strange to me that the temperature "only" goes down to minus 270 degrees but in stars the temperature can be millions plus degrees. I have read somewhere that the electrons can no longer jump between different shells in the atom and therefore the reaction stops, or are there other reasons. But metals become superconducting so the magnetic force cannot disappear and thus neither can the electric field force? 2. Does any change in gravity occur or does it have the same impact in minus 270 degrees, or does it become dark energy that controls? 3. From what I understand, no more matter can be created in the universe but what comes into being in the big bang, elemental particles are reshaped/merged into stars. But surely when the universe expands, "voids" should be created between matter, and surely this void should consist of "something"? Is it the "time" that has elapsed that is the void, but is it this "time" that we cannot yet measure as matter? Many Greetings from Sweden

@jimliu2560 4 жыл бұрын

So what caused the inflation/Big Bang?

@wazaaaken9256 4 жыл бұрын

Just remember you’re never alone...

@MrFran007 Жыл бұрын

8:28 i like how cobe/nasa picture of cmb is identical to yin yang symbol, it even has 2 dots in the middle :)

@victorl.6128 4 жыл бұрын

I love your videos, but have one question: what is the frequency?

@hokum4438 4 жыл бұрын

🙏 I want to thank you ahead of time for having Wal Thornhill on your channel to discuss dark energy.

@fredflintstone9657 4 жыл бұрын

She already did dark matter.

@saucissedemoniak 4 жыл бұрын

As a woman, you have no idea how happy it makes me to have found your channel. All the other channels are men's. My comment will get lost among the others probably, but if you ever get to see it, thank you thank you thank you !

@NobodyFucksWithTheJesus 3 жыл бұрын

Hey I was watching a Nick Lucid video and he mentioned the physics girl... I gotta say you are adorable and your videos are great. Keep up the good work

@thirdeyepyramids7391 2 жыл бұрын

Energy does not simmer down, it flows like a frequency being turned up in volume, and down, upward spiral, downward spiral, positive energy, negative energy, constantly transferring

@bencushwa8902 3 жыл бұрын

"Hey Physilers!" - I love that. :D

@danwebb6766 4 жыл бұрын

Huh. Deja vu. I swear I've watched this already. Did you reupload this, Dianna?

@vansantos5772 4 жыл бұрын

The last video, from December, talks about a similar topic... Dark Matter and she touches a bit on Cosmic Background Radiation... not a re-upload.

@danwebb6766 4 жыл бұрын

@@vansantos5772 Cheers, mate.

@fredriks9070 4 жыл бұрын

@@vansantos5772 well... No... I definetly watched this last week. Probably took it down to do some last minute changes

@vansantos5772 4 жыл бұрын

@@fredriks9070 Sorry... you are correct. I wasn't notified... gotta love KZfaq.

@marshallc6215 4 жыл бұрын

Assuming the CMBR is a nice legible signal as depicted at the beginning of the video, what would happen if you used multiple time-synchronized detectors to determine the direction of travel of the signal? Presumably the answer is as simple as "the CMBR does not form a nice legible signal and is effectively noise at all frequencies such that no two signals, even when time-synchronized, can be compared by either the direct time-domain signal or by its spectral decomposition."

@SubzEye 3 жыл бұрын

Really nice video! I like the information you share through your channel. One thing after watching about such subjects (x-ray, infra red, cosmic radiation etc) always makes me curious and amaze at the same time, the curios me always asks me the question that how come all these radiations from billions of years are still wandering around in the universe ? Why have they not been absorbed by all the stars, planets, supernovas, galaxies etc in the universe ? Hope I would find my answer someday (possibly in one of your shows).

@James-ci5ql Жыл бұрын

Because the distance between stars and planets and galaxies are extremely far apart and spread out.

@petertenoven3282 4 жыл бұрын

I have the feeling i have already seen this

@josevera5094 4 жыл бұрын

Maybe they re-upload the video

@japorah 4 жыл бұрын

It's a re-upload from a few days ago

@vansantos5772 4 жыл бұрын

The last video, from December, talks about a similar topic... Dark Matter and she touches a bit on Cosmic Background Radiation... not a re-upload.

@japorah 4 жыл бұрын

@@vansantos5772 it was uploaded 4 days ago, check your notification inbox.

@vansantos5772 4 жыл бұрын

@@japorah Gotta love KZfaq. Thanks.

@liggy287 4 жыл бұрын

Wait what if our entire universe is just a deodorant spray from some alien teen.

@leonaejoseph1362 4 жыл бұрын

Good stuff😂

@factnotfiction761 4 жыл бұрын

Reminds me of Horton hears a who. I seriously have pondered upon a similar scenario. Our universe is bewildering indeed. Also this cosmic dust signal (cmbr) makes me think of Star Wars and the concept of chi (which I think George Lucas might have been inspired by).

@CaseyJMoore 4 жыл бұрын

Love that you are always repping Starset! My favourite band.

@pwlegolas3 4 жыл бұрын

Lovely , interesting and very educational video.. Thankyou physics girl !! :)

@BillMSmith 4 жыл бұрын

Apparently I've discovered time travel and gone back a few days...

@justaman5418 4 жыл бұрын

i figured out how to speed up and slow time down myself

@Shake69ification 4 жыл бұрын

"The universe was hot! Very, very hot!" Hotter than Physics Girl?

@karanbirsinghbhullar 4 жыл бұрын

Doubt that

@vernscheck2658 4 жыл бұрын

True

@mellowfellow6816 3 жыл бұрын

Impossible

@scottparis6355 3 жыл бұрын

No such thing.

@edmor1086 3 жыл бұрын

The universe is cooling but physics girl just gets hotter.

@tomcastonguay2847 3 жыл бұрын

So many thanks you are rather refreshing. I am just starting to learn a bit about physics and love it. I have found a way around my math problem. So the maths are not so far beyond me. Peace love & learning every day. TomCat

@onehitpick9758 4 жыл бұрын

Penzias and WIlson were measuring signals from water and other terrestrial stuff within the ionosphere, and then the IMMENSE galactic background bouncing around in our local cavity. Take some water at room temperature, and measure the spectral emissions and absorption from it across all spectrum from 0 to 200 GHz, and you will be amazed. Do this for water vapor and ionospheric activity, and you will be even more amazed.

@sly1024 4 жыл бұрын

"it's EVERYWHERE".. How do we know? Have we actually looked everywhere? I thought that the universe is pretty big and we only discovered a small portion of our solar system.. Another thing I don't understand is this: if the source of CMBR is the light that "got out" shortly after the big bang, and we can detect it continuously, not just as a pulse, then it means that something is still producing that light, right?

@karanbirsinghbhullar 4 жыл бұрын

We can see into galaxies millions of lightyears away, is that far enough.

@divinespirit8770 3 жыл бұрын

Remember this information is just a guess based on inaccurate knowledge. No one knows for sure and they talk like they have all the answers. People are so gullible and listen to this whole heartedly as truth!!!!

@Klingenschmied 3 жыл бұрын

Do we know that every part of every lake and river and ocean is wet? Because I am pretty sure we have not looked everywhere.

@konsciousness 4 жыл бұрын

I Loved watching the CMB show on TV at my Grandparent's House.

@boltonky 4 жыл бұрын

Love your videos and totally forgot about CMB. Although i can never decide what better is for science looking back or moving forward its kinda like the matrix which ever pill you take there is always going to be more questions/answers

@tooligan113 3 жыл бұрын

He said in the cosmos is a single sonic sound That is vibrating constantly And if we could grip and hold on to the note We would see our minds were free, oh they're free... - Rob Halford

@TheCimbrianBull 4 жыл бұрын

The coldest place in the Universe is my ex's heart!

@stanlocke1009 4 жыл бұрын

An Ex with a heart - What a concept LOL

@sleepinglionarchives 4 жыл бұрын

Her cuteness has lured me into learning a thing

@prototype4426 4 жыл бұрын

4:37 Fun fact but still nice to know: actually Hydrogen, Helium and some noble gases are the only exception to that since they are the only gases that get hotter while expanding. Thats also the reason why Hydrogen is able to selfignite when leaking out of a gas bottle or a supplyline. So next time you're working with Hydrogen you better check for leaks! ;)