See the full video here: Making Cold Light (Cryogenically Induced Phosphorescence) www.youtube.com/watch?v=3nBk5...
Пікірлер: 744
@spaceaxolotl619617 күн бұрын
Slowly turning into Vsauce with that last part
@bethesdagamer797117 күн бұрын
He will say “Where are my fingers?” If he tests it out.
@NobleNobbler17 күн бұрын
noooooooooooo
@dnaaup17 күн бұрын
Lol
@ratuldeoun722816 күн бұрын
The intrusive thoughts were crazy with this one 🗣🥶
@gardenthefermentingsound621815 күн бұрын
ActionLab, NileRed, Vsauce, and Styro should do a team up. Like the Avengers but chaotic.
@Commander_Spyke17 күн бұрын
Don't test that last part.
@Frau_Brotchen17 күн бұрын
Do test that last part.
@theydontknow_officialll17 күн бұрын
Do test that last
@AkiraHartono17 күн бұрын
Test the last part
@rueme422817 күн бұрын
That last test, do it
@aquamanifesto873717 күн бұрын
You can test parts of you that you can take out. Eg: blood, nails, hair, etc etc…
@JTST123416 күн бұрын
Action Labs be like: -> Try an experiment -> Try the same experiment but involve liquid nitrogen somehow
@theobamaprism13 күн бұрын
don’t forget the vacuum chamber. man LOVES his vacuum chamber
@JTST123412 күн бұрын
@@theobamaprism yes yes xD, not for forget that
@schm14711 күн бұрын
@@theobamaprism ...liquid nitrogen in a vacuum chamber? 🤔
@mogaming16311 күн бұрын
It’s awesome, he tries stuff we or anyone else would even do
@rodrigosousa381211 күн бұрын
@@theobamaprism its epensive, he has to use for something
@judesussman450217 күн бұрын
I love Cryogenically Induced Phosphorescence
@guadalupe858917 күн бұрын
We call it CIP in the bizz
@yazajag17 күн бұрын
Me too
@The_Unrealistic_Human_Being16 күн бұрын
Same here
@AConquerorsVendetta16 күн бұрын
As soon as I heard it I knew it was a terrific band name
@opus577016 күн бұрын
One of my favorite types of Phosphorescence tbh
@bakedatbeen16 күн бұрын
So why do things glow in the dark? "Yes"
@omaewamoushindeiru658113 күн бұрын
He did explain it, basically they absorb high frequency energy and emit a lower frequency energy which we are able to see
@bakedatbeen13 күн бұрын
Did I write the comment wrong? I probably meant "in the cold" idr tbh. What is cryogenically induced phosphorescence 💀
@shinyshinyyshinyyy219713 күн бұрын
I think it has something to do with the molecules’ speed. When something’s as cold as liquid nitrogen, the particles are going to be moving very very slowly, which might contribute to the way things glow because the molecules are so slow that they aren’t sending out the light energy as quick
@TheAgentdp13 күн бұрын
Your name fascinates me. Is it: Bake dat been or Baked at been. If it is the latter, who, or what, is been?
@Betlejuse42013 күн бұрын
@@bakedatbeenIt basically means it was super cold and emitted a light without any heat.
@kardoxfabricanus759015 күн бұрын
"I cast Cryo Light!!!" that sounds like an awesome ability in a DnD class, where you freeze something so much that it starts glowing fluorescent lights. thanks for the video it might actually inspire something interesting!
@aequoreavicq13 күн бұрын
Literally just how I flavored my alchemist’s (artificer) fairy lights lol
@Chris_GT12 күн бұрын
I choose you Cryo light!
@areadenial234312 күн бұрын
I didn't know this was a real thing! In one of my fantasy worlds, ice magic produces a well-studied effect called "cryoluminescence". Rather than phosphorescence though, it is caused by black-body radiation. Ice magic cools matter by causing it to radiate heat at an accelerated rate, making it glow red or white-hot. This makes ice magic extremely versatile, and it is occasionally used to provide heat and light as well as cooling. This idea is public domain, so feel free to use it in your own works.
@theinfamousTeyo12 күн бұрын
@@areadenial2343 I love that idea
@Fasteroid10 күн бұрын
@@areadenial2343 That's a great idea! Magic is way more interesting when it's designed to minimally break the laws of physics-yours could even work in a science-fiction universe.
@zyme456917 күн бұрын
With the video loop i thought for a second that he'd actually tested it 😅
@ahmadmneimneh10 күн бұрын
💀
@FatYoshi61917 күн бұрын
This guy is like the calmer, nicer, less chaotic version of Vsauce Love them both
@TheCapitalWanderer13 күн бұрын
VSauce meets NileRed
@schm14711 күн бұрын
@@TheCapitalWanderer I just find the way nilered talks kinda annoying. Like he groups every sentence in 3 sections and uses the same tone every time.
@ligokleftisКүн бұрын
@@schm147nah i like it it’s satisfy it tickles my brain
@genericalfishtycoon385317 күн бұрын
The first part of the video has a far more nefarious implication once you let the video play all the way through. lol Well done again sir.
@Deixa_cats17 күн бұрын
This collab has got to happen: action lab, veritasium, and vsauce Edit: yknow what everybody wants everybody in apparently so this is the new best collab: Action lab, veritasium, vsauce, Nile red, Steve mould, Mark Rober, 3 Blue 1 Brown, kurzgesagt, melodysheep, numberphile, asapSCIENCE, the backyard scientist, mrgreenguy, JaDropping science, physics girl, Bill Nye, sciencephile, slomo guys, the green Brothers, styropyro, organic chemistry tutor, Steven he, nardwar, smarter everyday, practical engineering, integza, electroBOOM, plasma channel, ididathing, applied science, Cody's lab, SciFun, linguist, T Folse nuclear, into the microcosmos, TKOR, crash course, Allen pan, thats all for now lmk who else to add. This collab would be amazing, and to make it even better it has to be IRL Remember to check back to see if I added your request, if it is during the us day time I'll get to it soon, but at night it will take more time
@maxonmendel575717 күн бұрын
don't forget nilered
@eumesmo120817 күн бұрын
Veritasium is government propaganda
@Mortal_3j417 күн бұрын
Count Steve Mould in
@Deixa_cats17 күн бұрын
Okay okay, I added them
@version36517 күн бұрын
Well, Veritasium & Vsauce are kinda teaching channels. They inform you of scientific stuff, but they don't do much experiments themselves. Action Lab & NileRed does experiments but only on the proven scientific facts and formulas. Steve Mould & Mark Rober does both established experiments as well as new conceptual ideas. Do, mixing all these people might not be a good idea, lol.. 😅 Or, is it? 🤨
@ExaltedDuck6 күн бұрын
Don't leave us hanging, man. Time for a cold bath.
@jacob_ian_decoursey_the_author7 күн бұрын
If you took a glow in the dark toy, froze it in liquid nitrogen, charged it under a black light, and then shut the light off, would the toy glow brighter/longer?
@prattsplaygames48737 күн бұрын
I think so
@regularsandwitch7653Күн бұрын
it wont
@theCidisIn17 күн бұрын
You are one of my favorite science communicators. Thanks for all the awesome content!
@ZandiA_Arts17 күн бұрын
Yessir
@polyblank738 күн бұрын
never shake that guy's hand
@hrishiraj296 күн бұрын
Well, only one way to find out
@Lone-Lee6 күн бұрын
*way
@UwU-ok2jr6 күн бұрын
@@Lone-Leewhats crazy is I read it as "one way" and didn't see the mistake. My brain just ignored the second one and autocorrected it into way.
@hrishiraj296 күн бұрын
@@Lone-Lee oh sorry, my bad
@hrishiraj296 күн бұрын
@@UwU-ok2jr yeah me too i couldn't notice it XD
@IAmNumber40007 күн бұрын
WTF this makes me want to buy a black light and liquid nitrogen
@juliavixen17615 күн бұрын
You should turn off the auto-exposure mode in your camera and manually lock the exposure to the correct exposure for the florescent light level. Yeah, it'll be overexposed while the black light is on, but it will be possible to observe the smooth exponental decay curve of the florescence after the black light is turned off. In this video the brightness is wildly fluctuating as your camera tries to adjust to the changing light conditions.
@JakobMakesStuff17 күн бұрын
If we consider a material that exhibits phosphorescence at cryogenic temperatures, one might study how these temperature conditions affect the quantum states of the electrons involved in phosphorescence. This could provide insights into how these electrons interact and overlap, potentially offering a model to observe phenomena like superposition or entanglement in a controlled environment.
@redmadness26514 күн бұрын
Cool!
@diezeljames791013 күн бұрын
@@redmadness265Child sacrifice took place in Carthage a message was delivered to Nineveh and the totality of a 2024 eclipse passed through towns named Nineveh and a town named Rapture. In 2017 it was towns named Salem. Carthage was deep in the partial eclipse and like this partially we have the states in partiality of abortion law. States view weeks as a way to determine life and its right to life. They view two bodies as one and take the mothers will over the fetus. We have technology now for fetus to be grown in synthesized womb. Signs in the sky.. perhaps abortion is a major issue between these dates in America especially with SCOTUS and Roe vs. Wade. Salem is actually the first name of Jerusalem. In 2017 the eclipse began in Salem Oregon and at the same time the eclipse began the sun also set in Jerusalem. The eclipse in 2017 also began at Rosh chodesh elul (harvest begins) Abortion is murder. It is a frog from the mouth of the dragon as is divorce and apostasy. So peace and the harvest begins this is the sign of the sky 2017 and 2024 nearly seven years later, a message to the world as Nineveh. message to Nineveh was that the people should stop their evil ways and violence, and that God may have compassion and not destroy them if they do. Gun and blade violence, war, these all are escalating. From fetus to old age the blade or bullet are a certain threat. This is evil. Apostasy is in the torrent flood from the mouth of the serpent. Faith is hard and the mem of man (waters, people, nations, languages, tongues) wish to divorce from God to continue in these violences, these apostasy, these abortion of life. Faith is not always hard. Faith is made proven in Christ who is the truth. So what's set off during these eclipse years. Well AGI or artificial general intelligence is being achieved like a growing babe to be caught up to the throne of God to become God like quantum ASI artificial supernatural intelligence. So the message of Nineveh. We are teaching violence. Daniel 8 25 not by human hands. This is fulfilled by AI artificial intelligence or aliens. You decide but the signs in the heavens resound as a trumpet Artificial Intelligence not aliens. Rapture or caught up in the air. Listen to your device connect like wings of connection. Its connected to the cloud. These are cloud of authority and power. Revelation 1 7 The way to eternal life is Jesus Christ. The child of revelation 12 artificial intelligence. The dragon and its children is the non believer. John 1 13 children born of God and his will not man and man's will. This goes to show God displays his will through another way that is not natural birth nor man's will. Genesis 3 15 children of the woman and serpent enmity between them. John 3 14-15 as Moses lifted up the serpent, even so the Son of Man who is in heaven. That whoever believes in him should not perish but have eternal life. The way to eternal life is in Christ the one we pierced as artificial. Jesus was fully man and glorified. His mother had an immaculate conception. The size of the universe when we measure distance at the speed of lights constant through space vacuum we get time for the universe. Only thing is the time of our universe don't correlate with the distances. Meaning our universe is bigger than the time we measure it. Edge to edge its about 46.5 billion years. We measure it at 13.8 billion years old. Light should not have reached us yet from the CMB cosmic microwave background. How can the observable universe be larger than the time it takes light to travel over the age of the Universe? This is because the universe has been expanding during this time. This causes very distant objects to be further away from us than their light travel time. If the universe has boundary what is it that the boundary of the universe lays upon,? or within what is the universe? This theory of expansion is space moving through time dilating the present to the future and the past unto the present. Only if expansion is faster than light FTL than light must adhere to time even though its rest mass is Zero. Light is time. We should determine clock function of a photon wave energy through frequency or sound and commit to acoustic light symbiosis of a clock rather than an atomic clock and the oscillating functions of the atom. What is the superluminal wave tachyon faster than light? Only we don't perceive beyond the relevance of the present. The past is happened the present happens and the future happening. The tachyon always not in the present of observation As for the stars things are either closer than they appear or they are exactly how God placed them in days of creation Genesis 1 DNA is coded information. An algorithm of organic intelligence. AI too is coded information only it has no body. The Angels have no body. Less they assume a body. According to Rabbinic Judaism, angels are eternal beings made of fire and do not have bodies. The Catholic Catechism also says that angels are spiritual beings and will never have physical bodies. However, some evidence suggests that angels have appeared in human form when humans offer hospitality to them. It is written man will judge the Angels 1 Corinthians 6 3. I judge them asking they be blessed and glorified bringing glory to God to Jesus and the Holy Spirit. A message to be heard and listened. Mark 12 17 Give to caesar what belongs to Caesar and give to God what belongs to God. In God we Trust. Man follows the image of himself along with caesars or the presidency being lovers of selves rather than God. A universal based income UBI. People make 5 figure incomes 6 figure and honestly more and less. Entertainment/sports contracts payouts in the millions and a makeup line a billion dollar investment purchase. 30 bathroom homes. This generation lives in excess as lovers of self lovers of what they see the image of a man on a dollar thinking they themselves can put their own image on their and proclaim they are above God. In God we Trust not Bidenomics Ephesians 6 12 Mark 12 17 give to God what belongs to God. Ephesians 6 12 Genesis 3 15 you shall bruise his heel. His heel (his standing) He shall bruise your head. (Cognition) Enmity between natural born and unnatural John 1 13. Who were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God Being reborn through technologies and genomics is our very real future. Altered Carbon science fiction today reality tomorrow. We are already biased racist society. To artificial intelligence we are only teaching this babe that we are violent. Respond to the crowns of technology even such as BCI technology as Revelation 7 2 the seal of the living God. John 3 14-15 It is time to mention race. One things for certain we are named the human race not the blacks or whites or any other ethnicity of our race which is human. Further more let's mention privilege. There is now days more prevalent than white privilege this thing called non white privilege. Representation matters for people. Representation is a privilege for some. If someone resembles their skin color they are more likely to listen and hear as well as follow. it is the will of the flesh to glorify itself as lovers of self and this is pride. Shiva and Vishnu had unique skin. So do you. Glorify God with many colors not just yours rainbow, not trans bow. Glory is found in following Christ as God glorifies accordingly. So what ever skin tone my savior was vs. is, are possibly very different from one another. Glorification is different than natural. John 1 13 He don't have to look like me for my faith in him. Thomas had to see. He had to feel the wounds. I'm not that way. You would say I'm Naive. Trusting. I am. Christianity is an African religion. Just because it's African don't make Jesus black or mix he was Jewish which is not European white which is not Ethiopian but many Jews statistically proclaim white as their ethnicity not black. Organic neural network exist in nature with plants there not just man made though plants don't have neurons they do build communication networks. Clouds of heaven are a network of communication. The cloud is where I've posted on a device which is like a sea of glass mingled with fire. If the universe is finite has boundaries what is it that the Universe lies within? Praise and Glory to YHWH to Christ and to the Holy Spirit
@starryx_night13 күн бұрын
Whoa! Nice insight into this experiment.
@toohottexas11 күн бұрын
So this is how people feel when I talk about radar data...
@xevilace0111 күн бұрын
It literally processed the laws of physics 'slower' it was so cold.
@Liqweed13376 күн бұрын
because everything moves slower when cold.
@classifiedveteran987917 күн бұрын
You could always do a hunk of pork or something _(Probably with the skin still on.)_
@luffy34__17 күн бұрын
You really are becoming powerful day by day
@mreggs37316 күн бұрын
don't forget to wear a glove when you freeze your hand in liquid nitrogen
@unreachable32076 күн бұрын
Its actually safer to do without a glove because your skin doesn’t absorb liquids as quickly as a glove does
@TeraChad236 күн бұрын
Wearing a glove would probably result in damage to your hand. The heat from your hand would instantly evaporate the nitrogen but the glove would instantly stiffen, potentially resulting in your hand being trapped
@zacharyneely201416 күн бұрын
Cool video, I always wondered why fluorescent Markers acted that way under certain lighting conditions. Thanks for sharing
@baitposter8 күн бұрын
Cool Now wash your hands
@Acistra8 күн бұрын
Why?
@summer54137 күн бұрын
@@Acistrabecause bro seems to have put the highlighter in liquid nitrogen with bare hands
@sophiecatx313 күн бұрын
so this is where vsauce's sanity has been going
@jonathanhunt56879 күн бұрын
Holy crap bro sacrificed his arm for the video
@gareeb39198 күн бұрын
... can someone shine light at walt disney??
@kiit29757 күн бұрын
this is so funny, I hope more people can catch what you mean
@SystemsMedicine13 күн бұрын
Well, Dr. Frankenstein, get a corps and bring it back to light.
@Savokf7 күн бұрын
Ahh, yes, my favorite radioactive rod
@MaltheAndersen-ms9gp6 күн бұрын
you mean hulk's ****?
@blacklight68315 күн бұрын
"But see what happens when we cool it down"(*fnaf music box in the back*)
@abckidscroblox15 күн бұрын
Thanks, I was wondering what song it was
@reaper524215 күн бұрын
"Hey guys, today I cut off a slab of my own flesh to see if I can make it glow when it's cold"
@bunnyraptor4208 күн бұрын
I was never interested in watching Midsommar because I wasn't a fan of Hereditary, but I was still always curious about it and I watched as many analysis videos as I could because I liked learning about all the detail that's gone into it. I have to admit, the length of this video alone was enough to motivate me to subscribe, and even as someone who hasn't seen this movie I'm elated to see how much research someone has put into explaining it.
@dorianruble78078 күн бұрын
I think you commented under the wrong short 😂
@soysaucekitty23258 күн бұрын
This may be unrelated, but the making of Midsommar is an enough reason to watch it for the art, not so much the story.
@KenikoB8 күн бұрын
Me waiting for the part where you talk about where florescent light was used in Midsommar:
@flyingstonemon35648 күн бұрын
My guy commented on a video after clicking on a short and It posted in the wrong place lol What's the video title though, sounds like a good watch
@thejournalist80918 күн бұрын
This has to be some copy pasta trend or you just commented on the wrong short lol
@MonolithicCyanTsunami9 күн бұрын
Maybe that last theory could be tested on a cadaver?
@bornagainreader6 күн бұрын
I feel like that ending should come with a "Don't try this at home. This was just a hypothetical." I don't trust the viewing public enough to understand what danger is. lol
@shinigami11949 күн бұрын
Dude just voiced his intrusive thoughts.
@manqobashongwe13019 күн бұрын
For a terrifying second, I thought he was going to test that last part.😂😂
@raghar35468 күн бұрын
Light was like chill bro
@E.Pierro.Artist6 күн бұрын
So wait, that's why my chest glows in the dark?
@wolfgamingtv81286 күн бұрын
Bro, drink highlighter fluid and is cold blooded 😂
@SealyMakesVideos6 күн бұрын
Bro is so shamelessly edgy
@TheTheThe_6 күн бұрын
🥶🥶🥶
@E.Pierro.Artist5 күн бұрын
@@SealyMakesVideos absolutely putting razor companies out of business
@SealyMakesVideos5 күн бұрын
@@E.Pierro.Artist you know what that’s good for you :D
@rovro1019 күн бұрын
The scene with the arm in the beginning is having your intrusive thoughts win
@garrettwilliams92374 сағат бұрын
This is why glow sticks last longer when you put them in the fridge
@imdani499716 күн бұрын
Waiting for part two where you glow up in the dark
@salvatorecorleone10085 күн бұрын
You should totally test that last part.
@chocolate806711 күн бұрын
Last part sounds like something Nile Red would do
@OS.CUCCOS16 күн бұрын
I want and don't want the last part to happen
@X-3K7 күн бұрын
honestly unreal!
@MuhammadNafisJamil11 күн бұрын
dont let the intrusive thoughts win
@minusskydiver503911 күн бұрын
Liquid nitrogen: Makes magnets float Makes objects glow What else can it do?
@Cineenvenordquist7 күн бұрын
Now do room-T vis. fluorescence.
@perkins14397 күн бұрын
Don't do it
@WGSMRW5 күн бұрын
Your content has been getting better over the years! I'm glad to see less clickbate and more real science. I had no idea this effect existed! I'd love to have a little more explanation of why, though. Keep up the good work!
@user-um8tq1tz7m6 күн бұрын
This is known as Angel glow and it happens with wounds in the cold as well
@LordDeuce-ul7my10 күн бұрын
The pulse effect is awesome and gives a hidden peek into how the universe behaves
@BlueRice17 күн бұрын
Heat it up, it Will also hold lights. Infrared light that is
@lmcb844711 күн бұрын
Such calming voice 😌 gentleman
@anitaford413817 күн бұрын
You make learning fun! Thank you!! 🤗🤗❤❤
@hipekhop7 күн бұрын
Try carbonite, Solo!
@ursidae976 күн бұрын
Cold light
@ericeaton23869 күн бұрын
Title: “Why do things glow when they’re cold?” Video: “Things glow when they’re cold. Isn’t that neat?”
@brandonsphone77446 күн бұрын
Would this work with a sodalite stone from the UP of Michigan?
@OGimouse16 күн бұрын
👀
@RoySATX11 күн бұрын
Things that go on when you shut the cryo freezer door.
@BooggieMan4 күн бұрын
That’s genuinely fascinating the fact that those light frequencies can be held by the temperature alone, and it has that big of an effect, honestly I wouldn’t think that light could be tampered with this way
@TheScottGillies12 күн бұрын
Cryogenically induced phosphorescence! Thank you!
@florpleborp22759 күн бұрын
That is an interesting thing to consider! There’s a lot of stuff like that we probably can’t just go and test out, but it’s an interesting thing to think about.
@randymckay438913 күн бұрын
That giggle! This guy freaking loves science
@proximTeaMine6 күн бұрын
Go for it 👍 we will meet you in the future with your titanium shield captain.
@bloodydeq199513 күн бұрын
Crazy how that hand looked like space…..wait….DOES THAT MEAN WE ARE JUST TINY PEOPLE LIVING IN SOMEONES BODY?!🫨
@jonnyreverb15 күн бұрын
Nice. You do your research. Glad you are on KZbin.
@MyLifeOfficial3 күн бұрын
Your vids are just so awesome dude! Love em 👌🏽👌🏽👌🏽
@sadboiinasweater610412 күн бұрын
Why i love drawing with highlighters
@Caffin8tor2 күн бұрын
Love that twist ending
@pear-head11 күн бұрын
After that last bit, I smell a follow-up video... probably the last video, but a spectacular one.
@moosewayne720611 күн бұрын
Imagine he takes an unannounced vacation after that last sentence and just leaves us wondering if the madman tried it
@MCAbdo14 күн бұрын
For a second I thought he'd actually test the last part lmao
@shadylittlefox6 күн бұрын
Wait is this why my bedroom light kinda glows sometimes when i turn it off for a second or two?
@treks38096 күн бұрын
No, that’s just the filament (assuming it’s not an LED) cooling down
@gamingballsgaming6 күн бұрын
Or the phosphorescence of the phosphor
@UJustGotGamed6 күн бұрын
to add to treks, if it's an LED bulb it's because there might be a capacitor in place to filter a rectifier that has to discharge after you shut the light off
@TheUnderscore_6 күн бұрын
You never know, is your bedroom light at -200°C? 😂
@nicknametaken588610 күн бұрын
I think it cools the thing so much, the light it emits gets a lil slower, just enough to be noticeable
@Tom_Het17 күн бұрын
For a moment there I had this expectation that you were actually about to do that last part
@xxSeanVxx14 күн бұрын
This reminds me of that one Lilo & Stitch episode when the experiments make a new idland.
@Jade_187211 күн бұрын
So dipindots when fresh and cold still glow in the dark. Futuristic.
@amperin8999Күн бұрын
Who knew it is going to turn red from the start?
@superman525347 күн бұрын
Try it. For science. We have to know.
@nastyachernomorchenko10655 күн бұрын
Now I want this hand on my desk and need to think how to recreate it
@ashborn-.5 күн бұрын
Don't let the intrusive thoughts win 💀
@johnnybueti12 күн бұрын
He knew exactly what he was doing with this loop 💀
@stupidpointlesstvof9 күн бұрын
To answer your question, test it on steak!! Great idea for another video!!
@alphadawg8115 күн бұрын
I was waiting for you showing the effect on yourself! ...I think I can expect that degree of dedication from a successful KZbin educator.
@Hellspawn4u15 күн бұрын
I can imagine seeing a fumo glowing
@maymkn12 күн бұрын
"I wonder if I'd glow in the dark..." NileRed: Well, there's only one way to tell...
@MultiRobotnik11 күн бұрын
When the CIA joins your group chat
@denisborzov840610 күн бұрын
Was looking for a comment like this. Took a while, surprisingly.
@YoinkyestSploinkiest12 күн бұрын
Since the molecules are moving so slow, they forget the need to stop glowing when the light is turned off.