I Visited the First Gravitational Wave Detector! LIGO | STELLAR

[@physicsgirl]

Hey, I'm Dianna and you're watching Physics Girl. I know, that part of the video is missing. So is HAPPY PHYSICSING! SORRY! Let me explain. This video is part of a PBS Miniseries called Stellar done in collaboration with PBS Spacetime and It's Okay to Be Smart. There will be videos on their channels too, and one more on Physics Girl in 3 weeks. For the context of this video, let's go back to when I was a wee undergrad studying physics. Back then, there were experiments that physicists agreed were potentially going to be HUGE for modern physics - discovering the Higgs boson (we did that recently!), taking the first image of a black hole (we just did that too!). But a really big experiment was aiming to measure gravitational waves, and I remember being told we didn’t know if we’d measure them any time soon, if ever. But in 2015 we measured the first gravitational wave. It was a HUGE moment! Not just for physics, but for all of science! And the observatory that made the discovery was LIGO. For this video, which is part of a PBS space series that i’ll explain more in the description, I GOT TO GO TO LIGO. The best part was sitting with the head of the observatory and asking him all my questions about the universe in the downtime of the shoot. One of the coolest days of my life. Anyways.. I hope you enjoy this series!

[@saurabhsingh6325]

Isn't that LEGO

[@fanyang2171]

@@ElectricalExistence why are you doing here?

[@Szobiz]

@@fanyang2171 being an annoying dork

[@derektim7231]

You always produce such great content. I just wish I could have been there with you when you filmed this. Ugh, what a cool experience to have had.

[@user-pd9ju5dk5s]

Dianna, for your next video, could you explain the natural phenomena of my romantic attraction towards you?

[@roeiboot4]

I have my master's thesis defence on Gravitational Wave astronomy tomorrow and I couldn't be greeted with a more motivating video from Physics Girl! Thanks Dianna!

[@condorboss3339]

Hope it went well.

[@EaglesFlight75]

Back in 1998 I had the pleasure of working at the LIGO facility in Livingston, La. I polished a lot of Silver Coated bolts and helped build the room around the laser housing. The most science-y thing I've been able to do in my life, and I'm glad to got to do it.

[@dhanushkgowda9713]

thank you sir :)

[@mateusmachadofotografia8554]

Why It took so long to ligo to detect it

[@SkyLordPanglot]

This got on my news feed now. Please get well soon Diana. We all miss you.

[@SirPeabsSwamprider]

Dianna, watching your pure and honest excitement touring and explaining LIGO and all your magnificent physics related topics is absolutely priceless. Please, never stop inspiring!

[@WebRydr]

I've been following LIGO since the beginning. Even wrote a piece on my own FB page couple of years ago about what a tremendous achievement this is. I thoroughly enjoy your videos, Dianna. Explaining complex scientific issues in everyday language is NOT easy. You do it very well. Keep it up, girl! You be reachin' the peoples! Be talkin' to you.....David

[@InsightsInterviews]

Unbelievable achievement. Very honored to have had all three LIGO Nobel Prize winners on our podcast.

[@tgjaedan]

After watching so many of your videos I love that we can tell how excited you were about this because you were actually more calm and focused than usual. Love your stuff. You are awesome, Dianna.

[@spid3rmike117]

I live 10 minutes from LIGO in Livingston, LA! I love to go there for Science Saturdays where they hold free tours to the public. It is so amazing how they use these facilities to detect gravitational waves

[@swapnil7651]

I am from that city of india,where the third ligo is going to built..... Proud💚

[@nakulsharda6771]

What? In which part of India.

[@RANGER_Rajat]

Maharashtra

[@saurabhsingh6325]

I can feel the difference in quality and editing that has been put into your videos.....kudos to that Edit : why am I getting this much likes?...never got this much

[@devluz]

Blew me away just in the first few seconds of the video. Never seen physics girl so sharp and clear xD

[@th3corruptone]

Almost like this was filmed for a TV show and not a youtube video, huh?

[@SoumilSahu]

@@th3corruptone yeah, I wonder if this really is from a TV show... Hmmmmmmmmmmmmmmmmmmmmmmmmm

[@KartheekTammana123]

@@SoumilSahu It's for A PBS miniseries called stellar. Read the description

[@deletevil]

And the background music....oh boy, it is so interstellar (not the movie)!

[@LouisianaAstroRambler]

I just found out that I live 20 minutes from the LIGO here in Livingston parish lol. I've gotta go visit the facility when I get the chance. Its pretty cool knowing I live so close to a place that was part of something so historic.

[@sebastienruhlmann3917]

The style of this video makes it look like you made it to the pantheon of the greatest science educators in history. Very professional. It was amazing!

[@OU81TWO]

Probably because it was filmed for a TV series...by film professionals. Read the description.

[@sebastienruhlmann3917]

@@OU81TWO I know, but if it wasn't for her talent/aura it would not shine the same.

[@fr33ourminds]

@@sebastienruhlmann3917 gag

[@fernandasayuri9194]

Did anyone notice the video quality difference? It’s a lot better (not that it wasn’t before) I’m loving it! Great job! Bts, hi from Brazil

[@OnlyFacts196]

You are awesome. I've been inspired by you to go into the science field

[@kushalneupane629]

@@Funnydankguy every one can pursue on what they want and what makes them interesting . You don't need to be overly smart to read and learn things which are already published .

[@probablynotabigtoe9407]

‘The science field” Lol this sounds fake and disingenuous...

[@arthurmead5341]

Yeah that happened

[@kengallagher9047]

Thank's Dianna, I love your exuberance for physics especially in this episode. I love that trait in you. You tell us with vigor how it works. As an ex Military electronic eng doing work for '5 eyes alliance' , you should google that, it invloved Edward Snowden which may ring a bell!, which includes your NSA and 4 other nations doing sigint and elint, spook work. We used lasers in similar way to get audio recordings of what people were saying inside rooms, same principle infrared laser pointed at window or curtain and the phase shift in returned reflection due to subtle movement on surfaces,from sound waves:- a glass cup, window, table cloth, over head light or candle. It's difficult to initially set up getting all the angles correct to receive reflected lasing and compare phase shift with original laser before reflecting off subtle movements of reflected surface. Essentially it's the same thing / concept. I remember laughing so much when Myth Busters did an episode on this and Adam Savage and Jamie Hyneman found it as frustrating as we did to get it aligned correctly, but once set up correctly it works a peach. I would like you to do the same experiment . It would be so much fun to watch you do it . Your enthusiasm, passion and exuberance in physics is the same I have for electronics, quantum mechanics, astronomy and cosmology. I have to know how things work ever since I was a child. My first favorite website when WWW started which is still going is called 'How stuff works. ' My big fascination as a child was radio, Marconi, Faraday and Tesla were my champions at 6 yrs old studying after school at night technical college to get full amateur radio licence before I joined the Royal Australian Navy and did my electronic communications apprenticeship. I was gifted in understanding the things I was curious about and I'm so grateful for that natural gift of understanding and curiosity, your passionate exuberance reminds me of myself. I'm now medically retired and still passionate about how things work. Your doing a fantastic job of HAPPY PHYSICSING! . I subscribed to your channel a few weeks ago. You bring me so much joy and excitement watching your vids. Keep up the great work. Kind regards, Ken

[@doodlevib]

Thanks for sharing Ken! From a science standpoint, that's such a clever and fascinating application of laser frequency and phase analysis. Lots of fun with Fourier transforms and signal processing, eh?

[@SouvikB9865]

The production quality on this video is absolutely top class as is the content! (as always) Thanks Dianna!

[@CrankyPantss]

That was very interesting. I can imagine how exciting it was to visit that installation. Thanks for sharing this with us, Dianna.

[@Beeevaaa]

One of my favourite channels. Thank you for being so consistently badass Dianna!

[@thomast6741]

Dianna, not only are you informative and entertaining, but you truly make me and many others smile every time you geek out at such amazing science! Keep up the good work. I look forward to sharing your content with my daughter.

[@rudiexx420]

They had to correct for the curvature of the earth..... explain this flat earthers lol

[@davidgustavsson4000]

Scientists depend on being intelligent for their salaries, I'd call that a personal bias against stupidity!

[@firefish111]

*Flat earther:* no, they didn't. it was just a flat-tish slope.

[@habencon4082]

Dude, they don't even believe in space.

[@peterbonnema8913]

pancakes can flap as well

[@zifnab6824]

Flat earthers probably have an explanation. there belief is not based on science, but on old conspiracy theory's and then faith where the theory's break down. arguing with a flat earther is a lot like arguing with a 2 year old or a terrorist, neither will admit they are wrong, nor are they open to any discussion of the topic.

[@3DPrintingNerd]

INCREDIBLE video! That thing is crazy!

[@PatricioHondagneuRoig]

Wow. The leap in the quality of the editing in this video is noticeable. Keep it up Dianna, you're awesome!

[@SoulDelSol]

I think she has a crew, the editor lives in his van

[@manaoharsam4211]

Yes and I would like NASA to verify Lorentz contraction.

[@NinjaAdorable]

These advances about peering into the very infancy of the Universe, leaves me dumbfounded and honestly a bit teary eyed. What a time to be alive !!!

[@diodata]

Congratulations on the Stellar series. All three of the KZbin series selected are superb. Great idea by PBS to integrate streaming KZbin channels with the more traditional shows they're making for the #SummerofSpace.

[@paladinrose]

Dianna, it's your excitement at seeing cool stuff like LIGO that keeps me coming back to your videos.

[@mikeyoung9810]

"This week a billion years ago" brought to you by physics girl. Very interesting. Thanks.

[@luckypal5590]

6:10 "In the very first moments of the universe..." I literally lol'ed when I heard that.

[@fr33ourminds]

Ligo is so sensitive its measurements are thrown off by the moons gravitational force. The Earth's gravitational force makes it nearly impossible to use.

[@thevoidgaming1789]

LIGO always sends chills down my spine.

[@AbbyKidd]

I've been there! I used to live in that part of Washington and we took our Cub scouts there. I'm so excited to watch this.

[@raphaelcosta9730]

I love how Dianna is happy and excited about it. I totally get the feeling.

[@bellini98-1]

That's amazing! I've visited the one located in Italy near Pisa, "Virgo", such an engineering accomplishments!

[@danielstandley-Physicist]

Virgo should have been in Australia but our government is cheap and down care about science

[@bellini98-1]

@@danielstandley-Physicist yeah, I recon it could have been better, especially since here they built it 1 km away from a railway and 1.5 from an airport... It would have been a tod easier ahah

[@shrodingerscat8940]

They are building one in India

[@shrodingerscat8940]

I middle of nowhere

[@StianHanger]

You bring science alive in such a fun and exciting way. It's so cool to watch you get hyped for all this, in the same way I can imagine myself flipping out if I would have been there too. It's so awesome that we can imagine and build stuff like this. I love it. Keep up the awesome work.

[@insomn3ak]

I’m here from PBS Space Time and, omg I love you already! You get so excited about nerdy things ❤️

[@FrezBone]

It’s hard not to get excited when you see your passion for learning. I’m thankful to have found your channel!

[@tinkaralic4561]

1:20 Sign says: Got goggles? - Walks inside with no goggles

[@ominous-omnipresent-they]

Thank you for brilliantly making the science of physics available to everyone in an easy to follow format.

[@ominous-omnipresent-they]

​@Snails40 Seem like it's great for kids and teens.

[@starrock4584]

Hi Dianna! I love your work! Can you or someone in this comment section explain to me two things please? First, since LIGO operates virtually identically to the Laser Interferometry used in the Michelson-Morley experiment, how does LIGO overcome the problems they had in the MM experiment, namely the Lorentz-Fitzgerald contraction issues from the motion of the Earth? Secondly, If the Moon has enough gravitational influence to lift millions of tons of ocean water, the why does LIGO NOT detect this massive gravitational influence, but instead is able to detect an event that happened a long time ago in a galaxy far-far away? Also, if this gravitational effect was so strong when it was detected 3 years ago, how come we never felt those effects in any other way? After all, we do see and feel the gravitational effects of the Moon and this event was supposed to be orders of magnitude stronger. Thanks in advance for your answer! :-) - Melissa

[@jochen4207]

I can help you in (3) She describes the gravitational waves as "huge" but it's huge in comparison to other gravitational waves. She also said "spacetime moved by the distance equivalent to a billionth of a proton" which is clearly not huge in the macro scale. That's why you didn't feel it at all

[@victorcodesseira]

I might be wrong here, but about the moon, I think the probable answer is the frequency of the wave. Yes, the effect the moon has is of very high amplitude, but its period spans a whole day, so it's easier to differentiate from other sources. Besides that, this is one of the reasons they have 2 different observatories, in different places. The effect of the moon(and even earthquakes and other sources of error) moves "slowly" through the planet, and so any vibrations caused by these sources would be of different amplitudes and phases in the 2 observatories. Gravitational waves, on the other hand, move at the speed of light, and interact weakly with matter, so you would get a really similar wave within a maximum time delay of 0.01 seconds(depending on the direction the wave is approaching from). So basically, you have the 2 interferometers working together to filter out any local disturbances, on top of the suspension system.

[@JustSomeCanuck]

First point: I can't explain exactly how the designers would overcome that, but I am sure they have a way. Second point: I'm sure LIGO could detect the influence of the Moon, but that would be one of many unwanted signals that would be filtered out. The events that LIGO and VIRGO (the European one) have detected would have been massive if you were nearby. However, the first event detected occurred 1.3 billion light-years away. The waves are very weak after traveling that distance. Also remember that theoretical predictions of what a gravitational wave signal would look like are available, so part of the analysis is looking for signals that resemble the predictions.

[@TheLocust830]

The moon isn't actually lifting the water in the oceans. The tides are actually an effect of the drag the moon exerts on earth, also slowing earth's rotation in the process. It is quite similar to the way wind makes waves, just constant and worldwide.

[@Blox117]

if it was easier to detect gravitational waves from the moon it would have been done much sooner. but as victor says, the orbital inward merger of two black holes produces the highest frequency gravity waves. and only black holes are strong enough to produce those higher frequency waves.

[@AchOwed]

This video just came up on my suggestions. I REALLY hope that PG is better and out of the hospital with her family.

[@besmart]

I GOT NEXT!

[@attilakiss8585]

Dianna, I always loved your style but now you are even better. You looks more calm and dedicated, really impressive. Thank you for your efforts!

[@likebot.]

1:03 "The arm is so long that they actually had to correct for the curvature of the earth." Well! I guess every flat-earther just quit the chat :/

[@TheSnivilous]

@Harry Beaver you don't watch anti science videos and then bring religion into it? Wat lol

[@blindleader42]

@@TheSnivilous I checked his channel. Anti-science trash (and bigotry) videos is all Harry Beaver watches.

[@shinmai]

The title had "gravity" in it, instead of... *sigh* "boyancy" so I think they X'ed out long before that.

[@johannesh7610]

@Harry Beaver nope. Atheism and Science correlate, because people understanding science are grown up enough not to "believe", that is not question, the stories religious tells (just like Santa Clause or something)

[@ThomasKundera]

@Harry Beaver : Again no. There is no "religion" in atheism. I would be same as pretending than not believing in Unicorns is a religion. It's obviously not.

[@prknox]

LIGO is so amazing. I'm so excited to see what come out of it over the years. I'm a bit envious of Diana for getting a tour, but, thank you for filming it. Happy Physcising!

[@ihnew786]

Beautifully explained and presented. The science part of my brain which was sleeping since a long time just woke up.. Thanks 👍

[@SebAnders]

I love that you seem to get happier the closer you are to high tech scientific instruments, you got the science in you.

[@ChrisBrengel]

1:22 Big sign: Got goggles [no one was wearing goggles...]

[@Noneblue39]

i remember in school when they discovered this and it was a HUGE deal ! great to see LIGO!

[@doodlevib]

​@Snails40, they found evidence in support of a pre-existing hypothesis.

[@-doctorwjo]

why does the splitting of the weak nuclear force and the electromagnetic force produce gravitational waves?

[@staizer]

In short: Because the force splitting caused some acceleration (or deceleration), and acceleration produces gravitation waves.

[@Azzinoth224]

Who said it does? As far as I know the gravitational waves are created by colliding black holes, which is about gravity not about weak nuclear force or electromagnetic force.

[@-doctorwjo]

@@Azzinoth224 she said it may be possible that gravitational waves would be created after the weak nuclear force and electromagnetism split

[@staizer]

@@Azzinoth224 It's in the video.

[@Azzinoth224]

Sorry, I overlooked that.

[@robertrp3757]

I Love how excited you are about science. I really cannot wait until you see what’s to come in the Future. It’s Spectacular.

[@Trevor_Austin]

Excellent presentation. That was a full hour’s worth of content reduced into a bite size chunk. Thanks. ps. And whilst all of this is happening there are people who argue that there is no such thing as gravity, the world is flat, stars do not exist and we didn’t go to the Moon.

[@badouplus1304]

You forgot to mention that those people also think that the moon emits its own light because rocks cannot reflect light 🤣

[@misterthekaitheman]

I didn't know about this kind of physics. This is truly amazing

[@doodlevib]

​@Snails40, I would offer the perspective that gravitational waves were in the realm of theoretical physics until LIGO/VIRGO started making gravitational wave detections and coordinating with light-focused astrophysicists to get multi-faceted views of cosmic events. Although gravitational waves and general relativity are theories, they're markedly well-supported theories that have matured into the realm of experiment - which is so exciting!

[@jdanielcramer]

So fascinating. Sad to think that some won’t even believe that gravity exists, let alone such artifacts from distant space time.🤔

[@FloridaMan7337]

Density and buoyancy explains gravity without even needing it. This is all fake. You'll see one day when you wake up from all this deception.

[@jdanielcramer]

GoyBoy81 thank you for explaining this to me. Your explanation would be more compelling, however, if you considered such pertinent facts as; density is just a description of an object’s mass, and; buoyancy is simply the tendency for lighter objects to float in a medium being pressurized by a downward force...namely gravity. 🙃

[@chris993361]

Holy crap. You were in my town. I'm sorry I missed you. I remember my first tour of LIGO. Happy physicsing.

[@richardboyce4921]

you are so captivating with your explanations, it makes physics so much fun. Only wish I had teachers like you when I was studying.. thank you, keep up the great work..

[@ugh1963]

You lucky person! Thank you to have shared this with us!

[@davidmccoy9021]

Hello Dianna, Love your channel! I wanted to see the diode/detector. Thank you for sharing all the great information.

[@kachnickau]

This is amazing, your apology for leaving out your signatures was not necessary, because I can not wait for the rest of the series. This is so exciting collab

[@PatternOfChaos]

was just watching Derek's video on that topic the second the notification came

[@KishlaySingh04]

his video is far more informative than this...

[@KishlaySingh04]

@@zamoeyu yep, but in spite of being in the actual place, she only delivered the knowledge of most of the people already know... Derek one had explained the working with a caltech scientist in detail.

[@davidchung1697]

I'm a graduate of the class of '86 (a veritable dinosaur) from the beaver school. Happy to see other graduates doing videos on youtube and popularizing science.

[@3d_wafflehouse]

I went on a field trip to LIGO Livingston. It was pretty dope.

[@wendywander7]

Thank you so much for making this video! I've been so excited about LIGO's discoveries since the first press release, and I've wished I could see the Hanford facility since I live in the Pacific Northwest. Now I've had a virtual tour, and it's awesome!

[@2wheeledninjamonkey]

1:28 Enters clean room, immediately rubs bare hands together ;)

[@onehitpick9758]

It was just theatrics for a clean room at that reported level.

[@arthurmead5341]

It isn't really one...it has a scissor lift in it

[@axelram5510]

You come a long way Dianna. I remember when you're just a this vloger and now full scale PBS production. Physics is wonderful. Good Job babygirl.

[@naveenraj2008eee]

This concept is interesting. Thank you physics girl..🙏👍😊

[@naveenraj2008eee]

@@HARRYPOTTER-js1bx Ya.. Tamil,telugu,hindi,kannada,malyalam,gujarati....

[@naveenraj2008eee]

@@HARRYPOTTER-js1bx How do you know? You have nice i.q...👍

[@brahmburgers]

This video should be shown to all schoolkids in the US. To see a young person jazzed about pure science is special. Mankind has been steeped in religion, metaphysics and hocus pocus ever since stone tools were created. Science is like a tall glass of clear water, compared to the bilge of centuries past.

[@VaanRavi]

You are the best I love your enthusiasm

[@PopeGoliath]

Really impressed by the audio quality while you were talking in the wind. Admittedly I'm listening from a phone speaker, but I didn't catch any noise. Well done!

[@lazyperfectionist1]

"Imagine I snapped a twig in an isolated forest, then a listener on the opposite side of the planet hears the sound vibrations created by the snap, and just by hearing it, can tell you _exactly_ where I was, at what _time_ I snapped it, and even what kind of tree the twig came from." I would say that this raises _serious_ questions for the notion of _privacy_ in the world.

[@LandoCalrissiano]

I'd love a video on the LISA Pathfinder and the future LISA mission.

[@markokelly2494]

It amazes me that A. A. Michelson doesn't even get a casual mention.

[@arthurmead5341]

It's because he wasn't jewish

[@ghadakamar8315]

This channel must have way more subscribers! Diana you must be an idol for every girl

[@fr33ourminds]

I think you are thinking of Arianna Grande and Miley Cyrus.

[@ghadakamar8315]

@@fr33ourminds hahaha well i didn't mean anything bad towards any famous girl like these two you mentioned ,but i guess yeah we must not idolize them. However, girls like dianna are true champions and idols

[@j.danielrios]

Door: GOT GOGGLES?! Dianna: My names is now Carol!

[@Zappyguy111]

Pretty good rapport for a device that disproved the existence of the aether.

[@thewhizkid3937]

She is such a nerd. I love it... has anyone read a Brief History of Time that book like changed my life lmao :D

[@LaynieFingers]

I've been to the LIGO in Livingston, LA and it is so incredibly fascinating! Makes me happy to be a Louisiana resident! It's crazy, they could even detect (and correct for) the footsteps of deer in the woods surrounding the area.

[@paulveitch]

It's a pity that you didn't mention the VIRGO detector in Italy.

[@Markle2k]

That's VIRGO, not LIGO.

[@paulveitch]

@@Markle2k thanks, have edited

[@shrodingerscat8940]

And India

[@paulveitch]

@@shrodingerscat8940 in 2024 (planned)

[@bobshewberg]

Yoo, I was just here last weekend for the North West Gravitational Wave Astronomy meeting! Love the place, but I especially love the people!

[@saurabhsinghjat]

This is inspired by the michelson-morley experiment where they tried to calculate the velocity of earth from the reference frame of 'eather'(a theoretical frame which has a 0 velocity).

[@ngkrish1]

your smile is priceless. it doesn't matter if i understand what you say. i like coming here to see you smile!!!!

[@IamSyrach]

Theres a cool documentary on Netflix that mentions this. Blackhole Apocalypse

[@shivankitss8396]

Ooooo imma watch it thanks

[@Baliken100]

found you through my FAVORITE KZbin, and all out educational scientific, SHOWS....Space Time. awesome. thanks for doing what ya do

[@akshaysachan6029]

Shouldn't the full form of LIGO be Light Amplification by Stimulated Emission of Radiation Interferometer Gravitational Wave Observatory?

[@dustyfox6511]

Yup. Also LIGO is part of the LSC which is short for LIGO Scientific Collaboration. So it's the Light Amplification by Stimulated Emission of Radiation Interferometer Gravitational Wave Observatory Scientific Collaboration.

[@Divyansh3527]

acronym inception!!

[@gk10002000]

This really is a fascinating topic. I remember first reading about them back in the early 70s when I used to subscribe to Sky and Telescope magazine and my 13 year old heart would leap with joy when that would show up in the mail every month. Dr Weber the guy out of Maryland as I recall was actually attacking the problem with his Bars, and at least made practical forays into the detection problem

[@Mike-mu7tk]

My mental image of the scale of the concrete arms was way off. They're so much more massive than I assumed.

[@varuntulsyan2558]

This video reminds me of when I heard Prof. Brian Cox say on Joe Rogan that the universe is flat. I would be so grateful if you could make a video on that sometime in the future and explain it. I couldnt understand what he meant at all. I know it's hard to imagine and picturise most things in modern physics because of how counter-intuitive they are but I still need someone to explain that to me because it just bounced off my head. Great video btw!! :)

[@zapfanzapfan]

You are *way* to excited to be in a clean room :-)

[@coreyyaws5356]

I love how excited you get! Love your videos....very educational and fun to watch! You need your own tv show!

[@Tranquility_00]

2:58 Actually, multiple detectors are needed in order to triangulate the exact location of the event in space.

[@doodlevib]

Both justifications for detectors located far apart are correct. Multiple detectors are used to correct for coincident glitches/false alarms AND to triangulate the merger sources.

[@garybc]

Wow! Amazing! Thanks for letting us in to the tour of this awesome place! :)

[@pvic6959]

"...at what time i snapped..." Dianna is thanos confirmed :o

[@jonbold]

Hey, Dianna! What an awesome field trip! I have this nutty idea I want to share with you and maybe LIGO, too. I understand that the LIGO experiment compares the phase of two rays that have split from a single laser and traveled several kilometers. This should detect spacial transience. Perhaps LIGO could build a device that compared a ray that has traveled several kilometers to a different wave that is fresh out of the laser, in order to detect chronic transience. I would expect the CT detector to have a much lower sensitive band, such that it could detect Earth's tides and maybe the motion of the gas giants. Nutty idea? I have more! Thanks for a great video.

[@fluffyflextail]

Ligo is nothing compaired to my Lego collection! :-O

[@thomaslovell2990]

Very cool. I went to the wehackthemoon site just to make sure that Margaret Hamilton was mentioned. She was! As a retired software engineer (Linux), she, naturally, is one of my heroes.

[@joecaner]

A detector that can differentiate vibrations 1/1000th the width of a proton? It would seem to be a nearly unobtainable feat of engineering precision.

[@thesixthestate4274]

Because its a lie

[@justahilltopguy5418]

Thank you for this video! LIGO Hanford is about 35 minutes from my home and it's nice to get an inside glimpse.

[@manonegm]

my favorite youtuber♥️❤️♥️❤️♥️wish to see u in colabs again with justine

[@petercarlson811]

Scientific curiosity and dedication will never cease to impress me.

[@jayinderkaushik]

"The arm is so long they had to correct for the Earth's curvature" *Flat Earther has entered the chat*

[@CintreuseGrande]

I haven't even watched the video yet. But I just wanted to let you know that I am happy that you are making more content. You are one of my favourite KZbinrs! 💗💗💗

[@CintreuseGrande]

This was an amazing video! How can I support this channel?

[@claudesmoot1880]

So this is why I feel older sometimes and younger others. Lol

[@Rubrickety]

It’s interesting to see Diana dial her enthusiasm down to nearly normal human levels for this format.