This thing is -270°C and is EVERYWHERE

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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/
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/ 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...

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9 июн 2024

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Комментарии : 2,3 тыс.

@physicsgirl 4 года назад

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 года назад

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

@TMnFL 4 года назад

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 года назад

@obo2881 4 года назад

Physics Girl You’re only human!

@petero6471 4 года назад

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 года назад

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 года назад

they probably thought it was amusing too

@gauravjha8938 4 года назад

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

@Call-me-Al 4 года назад

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

@catdisc5304 4 года назад

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

@catpoke9557 4 года назад

@@gauravjha8938 Your poop is.. yellow?

@edrumsense 4 года назад

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 года назад

We can make a religion out of this!

@miratparmar6779 4 года назад

Just a reminder: ThE SuN Is A DEaDlY LaZEr

@edrumsense 4 года назад

@@miratparmar6779 it's a STAAAAAAR

@miratparmar6779 4 года назад

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

@edrumsense 4 года назад

@@miratparmar6779 So sad :-(

@jollyjokress3852 3 года назад

The most interesting channels are always about physics.

@laikapupkino1767 2 года назад

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

@MaryAnnNytowl 2 года назад

@@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 года назад

Kinda hard to avoid phyzzicle stuff! (God).

@ScienceCommunicator2001 2 года назад

Chemistry channels: hold my ethanol!🍺

@jop1093 4 года назад

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

@1SpudderR 4 года назад

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 года назад

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

@1SpudderR 4 года назад

zapfanzapfan Whose eyes to see the light?

@zapfanzapfan 4 года назад

@Robert Rudd The customers of Big Bang Burger?

@1SpudderR 4 года назад

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

@bassholic705 4 года назад

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

@TommoCarroll 4 года назад

A quote that shall go down in history!

@Tore_Lund 4 года назад

@@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 года назад

A fame-worthy quote for sure lol

@erictayet 4 года назад

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

@krissp8712 4 года назад

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

@devsullivan 4 года назад

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 8 месяцев назад

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

@parthapratimlala6751 3 года назад

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

@duchi882 4 года назад

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

@vansantos5772 4 года назад

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

@roichir7699 4 года назад

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

@dennisweaver5485 4 года назад

Related to the Higgs Boson?

@tom_flew 4 года назад

oh, god?

@animejoy696 4 года назад

Trivago?

@lokeshlkr 4 года назад

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

@atomaalatonal 4 года назад

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_seohyun 4 года назад

@@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 года назад

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

@fvckyoutubescensorshipandt2718 3 года назад

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 года назад

Underrated comment right here!

@Djieff 3 года назад

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

@dr.maddie3618 4 года назад

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

@johnm.v709 4 года назад

Universe - Only two things 1. Space 2. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-A3SSf-PoBg4.html

@beaubeaukitty5301 4 года назад

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

@waqasahmed3115 4 года назад

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

@1SpudderR 4 года назад

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 года назад

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

@AndrewTaylorPhD 4 года назад

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

@benchasinghorizons9428 4 года назад

how many times are you going to make this same joke

@AndrewTaylorPhD 4 года назад

@@benchasinghorizons9428 ...once?

@crazyeye1 4 года назад

Looks like Ben is dating you ex now m8.

@Lloyd.B 4 года назад

Dead

@shadowmanLX1X 4 года назад

Yes

@badgerpa9 4 года назад

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 года назад

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

@christiaandijkstra2050 4 года назад

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

@shambosaha9727 4 года назад

Woah

@ImRandomDude 4 года назад

what an observation, here take a nobel prize for it

@dundermifflinity 4 года назад

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

@guigaingamkamei9654 4 года назад

Wow man ur eyesight

@jjeherrera 4 года назад

By Jorge Cham. Great cartoon book!

@jmunt 4 года назад

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

@ikijiigoku 4 года назад

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

@Rowan_G_Link 4 года назад

"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 4 года назад

I did that over 35 years ago,friends.

@roytee3127 3 года назад

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 года назад

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

@speculesgorgoth4055 3 года назад

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

@albertchurchill4845 3 года назад

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.

@randybehrmann5454 4 года назад

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 года назад

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 года назад

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 года назад

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

@sinebar 4 года назад

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 года назад

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 года назад

What? Really?

@coopercoldwell 4 года назад

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 года назад

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 года назад

Mit, I was only trying to be funny. 😳

@michaeltuz608 4 года назад

Just discovered your channel and love it! Thanks!

@TheBurt57786 2 года назад

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

@1977jelliott 4 года назад

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 года назад

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 года назад

Smart kid!

@deluxeassortment 4 года назад

@@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 года назад

And then she was grounded....

@mastershooter64 4 года назад

@@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 ?

@shauncarter924 4 года назад

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

@jh61 4 года назад

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

@revb0 4 года назад

Beautifully put, thanks.

@Mark748541 4 года назад

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 года назад

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 года назад

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. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1loJTy6bOu8.html

@BorisNoiseChannel 4 года назад

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

@patrickmccurry1563 4 года назад

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 года назад

Sounds plausible. Hence the cosmic egg theory.

@oldschoolman1444 4 года назад

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

@thhseeking 4 года назад

@@oldschoolman1444 Always the egg :)

@miguelnovais3878 4 года назад

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

@pwlegolas3 4 года назад

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

@prathamhalkatti6438 4 года назад

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

@GTAVictor9128 4 года назад

Hey, me too!

@avidnongetit8710 4 года назад

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 года назад

Because the google algorithm can read minds.

@yusupab3377 3 года назад

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

@pleaseunsubscribeme8533 3 года назад

Yes

@DyslexicMitochondria 4 года назад

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

@srajanskgupta 4 года назад

Ba dum tss

@emilferrer0211 4 года назад

alright you may enter. 😎

@ploppyploppy 4 года назад

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

@alveolate 4 года назад

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

@beastlybuickv6402 4 года назад

😂😂😂😂😂😂

@mikeeasley6670 3 года назад

I enjoyed this video. This is very interesting subject matter, and you communicate it very well.

@PreppySpongeBob 2 года назад

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

@steveegbert7429 4 года назад

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!

@rogerjones332 4 года назад

She blinded me with science, and hit me with technology

@Lobos222 4 года назад

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

@luv3daysgrace1 4 года назад

It’s poetry in motion

@1SpudderR 4 года назад

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

@1SpudderR 4 года назад

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 года назад

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

@snakefarm7174 3 года назад

Very smart and nicely presented. Great job!

@bobrussell3602 3 года назад

Wow ! Brilliant video. Keep 'em coming ! I'm subscribing.

@TheRealMrRobles 4 года назад

Thank you, I love how you explain science!

@thomasewing2656 2 года назад

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

@thairoi8382 4 года назад

Waited for this for days

@grandrapids57 4 года назад

Very nicely done.

@paulford9120 4 года назад

Excellent video - thanks! 😊👍

@RealRuler2112 4 года назад

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 года назад

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

@RealRuler2112 3 года назад

@@pieterbezuidenhout2741 You know nothing of history, huh?

@thursoberwick1948 2 года назад

@@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 года назад

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

@Joseph-oj1uv 3 года назад

Your channel is so good. I can’t stop watching.

@tomcastonguay2847 3 года назад

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

@FabioLeprechaun 4 года назад

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 года назад

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

@FabioLeprechaun 4 года назад

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

@charlesdahmital8095 4 года назад

@@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 года назад

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 года назад

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

@silvermica 4 года назад

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 года назад

Its soap dry shampoo is soap

@bmerigan 4 года назад

@@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 года назад

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

@roytee3127 3 года назад

@@bmerigan Good explanation.

@druid139 3 года назад

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

@doc2590 2 года назад

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.

@pierre.1978 4 года назад

Very interesting video. Thank you !

@sheldonwheaton881 3 года назад

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

@alcyonae 2 года назад

Only 1% of it :)

@theintergalacticgamers7401 4 года назад

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

@diggerdave51 3 года назад

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

@UCLAursinho 4 года назад

Big fan of the channel. All episodes are good, this one especially good.

@acebasher1st360 3 года назад

8:28 Yin-Yang

@timothystockman7533 4 года назад

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.

@dantower8268 4 года назад

We appreciate the effort. It was a good vid. You're doing great!

@jimliu2560 4 года назад

So what caused the inflation/Big Bang?

@mscottveach 4 года назад

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

@kaanaknc5039 3 года назад

get out

@aktripathi48 3 года назад

Thanks, love to see this Informative video

@optimuscprime 3 года назад

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.

@Thessalin 4 года назад

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

@SomeBuddy777 3 года назад

🚦😂🤣😅

@utkarshanand9706 4 года назад

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

@gkanupriya 4 года назад

My dark soul smiles

@micecdnwo 4 года назад

I'll take things that didnt happen for 400

@bmkq2007 4 года назад

You are the coolest girl ever. Love the way you explain things and its a joy to spend time watching your content.

@jatinsinghal6380 4 года назад

Thanks for adding subs this time!!

@wazaaaken9256 4 года назад

Just remember you’re never alone...

@bencushwa8902 4 года назад

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

@steveaspen6773 3 года назад

I totally loved this accurate video. Thanks!

@ronaldjorgensen6839 2 года назад

Thank You and Crew

@hokum4438 4 года назад

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

@fredflintstone9657 4 года назад

She already did dark matter.

@jesseroberts1608 4 года назад

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

@michaelsommers2356 4 года назад

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

@dennismcavoy860 3 года назад

Great video thanks Dianna

@Ernireg3 2 года назад

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!

@esntlaman3433 4 года назад

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 года назад

Like 2 days ago?

@alveolate 4 года назад

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 года назад

@@alveolate yeah think so

@puppet8225 4 года назад

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

@admiralteddy 4 года назад

It was taken down and reuploaded as it contained errors

@jkobain 4 года назад

Wait, is it a re-upload?

@joaquins90 4 года назад

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

@CrypticHashing 4 года назад

I think so

@vansantos5772 4 года назад

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 года назад

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

@jkobain 4 года назад

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

@CaseyJMoore 4 года назад

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

@rogersledz6793 3 года назад

Thank you so much for uploading this video. It is helping me get through the pandemic!

@JustBigL66 4 года назад

i've been waiting for this to come out :D

@danwebb6766 4 года назад

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

@vansantos5772 4 года назад

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 года назад

@@vansantos5772 Cheers, mate.

@fredriks9070 4 года назад

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

@vansantos5772 4 года назад

@@fredriks9070 Sorry... you are correct. I wasn't notified... gotta love RU-vid.

@thomasherbig 3 года назад

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!)

@beckyj1493 3 года назад

Excellent! Thank you! You are fabulous.

@konsciousness 4 года назад

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

@unvergebeneid 4 года назад

"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?

@rickquest6385 3 года назад

Great job PG!

@duncansbuddy 2 года назад

This young woman is brilliant and presents interesting stuff so articulately. Thank you for sharing, bright you are.

@noether9447 4 года назад

Been waiting for the reupload. Missed it the first time.

@kowjackyow7585 4 года назад

same here!

@petertenoven3282 4 года назад

I have the feeling i have already seen this

@josevera5094 4 года назад

Maybe they re-upload the video

@japorah 4 года назад

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

@vansantos5772 4 года назад

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 года назад

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

@vansantos5772 4 года назад

@@japorah Gotta love RU-vid. Thanks.

@michaelmcdonald8877 3 года назад

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!

@user-ky7jh7gr3n 2 года назад

Good explanation of cmb

@bsjeffrey 4 года назад

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

@beastlybuickv6402 4 года назад

😂😂😂😂😂😂

@massimookissed1023 4 года назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-RmD9ZWDUsNY.html (22secs)

@sleepinglionarchives 4 года назад

Her cuteness has lured me into learning a thing

@porbit101 4 года назад

Love it! Thanks you!

@SubzEye 3 года назад

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 2 года назад

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

@Shake69ification 4 года назад

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

@karanbirsinghbhullar 4 года назад

Doubt that

@vernscheck2658 4 года назад

True

@mellowfellow6816 3 года назад

Impossible

@scottparis6355 3 года назад

No such thing.

@edmor1086 3 года назад

The universe is cooling but physics girl just gets hotter.

@liggy287 4 года назад

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

@leonaejoseph1362 4 года назад

Good stuff😂

@factnotfiction761 4 года назад

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).

@Maeyanie 4 года назад

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.

@boltonky 4 года назад

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

@sly1024 4 года назад

"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 года назад

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

@divinespirit8770 3 года назад

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!!!!