Is Dust Mostly Dead Skin?

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Veritasium

3 månader sedan

People claim that 70-80% of household dust is dead skin, but is it true?
Thanks to Google for sponsoring this video! Learn more about Search here: www.google.com/search/howsearchworks/
Special thanks to J.M.E.H van Bronswijk, author of 'House Dust Biology'. We exchanged emails to make sure I got my facts straight for this video. Below is an excerpt from her email to me, responding to my claims that start with a dash:
- Around half of airborne dust particles under 100um are skin scales
This is true for climates, regions and seasons where people live mostly indoors.
The 1 to 2 g of skin scales shed each 24 hours will end up in places where people are present (and rub their skin or have textile moving over the skin).
You can also look at it from a different angle: What else has the same size and could contribute? That will usually be pollen from outdoor sources, also depending on season, region and climate, as well as the ventilation regime of the building.
However, taken as the median value over a whole year, I consider your statement correct for regions with a temperate climate.
- 53% of dust particles vacuumed from a mattress were found to be skin scales
It depends a little on the type of mattress. For polyether mattresses the amount may even be larger.
For mattresses made of natural material it could be less since the mattress-material will also give off small particles.
- larger particles consist mostly of fibers, eg. cotton, paper, wool, synthetics
That's true .. including bread crumbs ..... 🙂
- skin scales seem to form a larger fraction of dust where we spend more time, e.g. in or near bed.
..... and on the couch used to view television or be active in gaming.
It has to do with the constant production of skin scales over the 24 hours.
- skin scales form a smaller fraction of dust if there are significant other sources, e.g. carpeting, dirt from outside etc.
Yes, everyting you walk on with your shoes or that recieves dirt from the outside with other means, will have a lessr percentage of human skin scales.
However, do not forget the skin scales of pets that will also be an active allergen for many people, and a food source for house dust mites.
Information on dust particle size ©ISO. This material is adapted from ISO 7708:1995, with permission of the American National Standards Institute (ANSI) on behalf of the International Organization for Standardization. All rights reserved.
Research and Writing by AJ Fillo and Derek Muller
Editing, Audio Mix & Master, and Computer animations by Jonny Hyman
Dust and character animation by Ivan Tello
Filming by Raquel Nuno
Thumbnail by Fictionalhead svfrom.info
Intro Music composed by Jonny Hyman
Additional Music from Epidemic Sound: Colored Spirals, Observations

Kommentarer
Andratos95
Andratos95 3 timmar sedan
When you said you were gonna call some dust expert I was actually expecting like an housemaid or something
Penguinexpress
Penguinexpress 11 timmar sedan
How do you get sponsored by Google?
Jiaxi hao
Jiaxi hao 13 timmar sedan
NEW TITAL FOR THE VID: DEBUNKING THE DEAD SKIN ARE DUST MYTH FT. DR.D
Jiyu Pu
Jiyu Pu Dag sedan
Let me google google real quick
caliron nia
caliron nia Dag sedan
Wow I never know that dust can be used in investing although I read dr. Stone manga recently and saw senku investigate in an island using a single hair strand and identified it's owner, her age and what she did earlier by looking at the hair with some pollen
Ilja
Ilja Dag sedan
The internet is a free encyclopaedia?
EggyRepublic
EggyRepublic 2 dagar sedan
This new Google service seems interesting. I feel like it might become something big, perhaps I should invest in it.
Shubham Meena
Shubham Meena 2 dagar sedan
In my entire life I never saw Google sponsor youtube video
Science done right
Science done right 3 dagar sedan
Hmm. Google sponsored with a google product.
ziyaad george
ziyaad george 3 dagar sedan
id love to have a conversation with you
Dima-X – Gotoro
Dima-X – Gotoro 4 dagar sedan
This 13:30 reminds me of Interstellar's dust theme
Chris Lynn
Chris Lynn 4 dagar sedan
Lies!!! Google does not show you "the most relevant information"! They censor the most relevant results and curate / feed you the info the people in power want you to "know". I'd use any search engine over google.
Alexis Smith
Alexis Smith 6 dagar sedan
Here because of Hank.
Carlos Chau
Carlos Chau 6 dagar sedan
Congratz on being sponsored by Google!
Jean Paul
Jean Paul 7 dagar sedan
Lol who's Derek lurch?
Raymond Cai
Raymond Cai 7 dagar sedan
11:31 better not be Bank station, its always crowded at rush hour
Konsti G.
Konsti G. 7 dagar sedan
Me in the London subway: "Ahhh, I love the smell of *_dead skin cells_* in the morning."
Léa Mu Biu
Léa Mu Biu 8 dagar sedan
Veritasium: 6:23 me: ....how about: just about the same as how much you just said that we produce (20 million/hour) ? Veritasium: 7:10 me: well.... blown is my mind.
J D
J D 8 dagar sedan
I could listen to this man read off lists of different nouns all day
Luisa
Luisa 8 dagar sedan
scholar google helped me write my thesis and research papers for sure! it's an incredible tool (with addition of sci hub) 💗 lol
AnthonyBEERvor
AnthonyBEERvor 9 dagar sedan
I always assumed the "myth" came from the movie "Sunshine" from 2007.
Chozo SAran
Chozo SAran 9 dagar sedan
Gross
Gaurav Bhalerao
Gaurav Bhalerao 9 dagar sedan
This google company seems pretty interesting. Might have serious potential.
Michael Martin
Michael Martin 10 dagar sedan
The skin shed in a bed over 10 years would only weigh 3Kg. "And by conservation of mass, the dust mites that feed off that dead skin could not weigh more than that." This is such an obviously false statement, I'm very surprised that it's in this nit picky video. Just think of the other ways living things gain mass other than eating. The two obvious methods are drinking and respiration. Dust mites don't actually drink like we do, but they inhale water from the air. So in their respiration cycle they acquire the moisture they need from the humidity of the air. If you look at the weight of dead skin cells in a mattress without dust mites this calculation is true. If you look at the total weight gained by a mattress with dust mites, you would be off by a factor of 2. I'm not saying the mattress doubles in mass, but it's a lot more than the simple calculation provided.
Vaxel Band
Vaxel Band 10 dagar sedan
Your videos are truly amazing 🤗🌹Love from Iran❤️
GARRY
GARRY 11 dagar sedan
So. Gross. Lol
Alex Konor
Alex Konor 11 dagar sedan
Тупой ютуб отключил возможность людям делать субтитры(
Jimmy2G
Jimmy2G 12 dagar sedan
FTL music?
Erin Harris
Erin Harris 12 dagar sedan
Who else is here from Hank Green’s TikTok? 😁
Mickey Bitsko
Mickey Bitsko 12 dagar sedan
"No." There. I saved you a lot of time.
Mateus Marinho
Mateus Marinho 12 dagar sedan
One of the most interesting videos I've seen! Please continue this amazing work.
Rayne Marie
Rayne Marie 13 dagar sedan
Did Hank Green send you guys here too? 🧠
Mark Bolly
Mark Bolly 14 dagar sedan
I am sold. I will switch from Yahoo browser to this so called 'Google'.
Joe Dallas
Joe Dallas 14 dagar sedan
“Is dust 2 t sided” only real ones will know
Em K
Em K 14 dagar sedan
Your videos are awesome
Kjetil Vilsvik
Kjetil Vilsvik 14 dagar sedan
Hank Green sendt me
Austin Wer
Austin Wer 14 dagar sedan
Who else is here because of Hank Green?
GARGYXD
GARGYXD 14 dagar sedan
I didn't know there was something called Google scholar wow
MynameisCarlosjr _
MynameisCarlosjr _ 15 dagar sedan
0:04 that was before I was born
TerribleFire
TerribleFire 15 dagar sedan
Nice monkey island reference.
DanceBeforeTheStorm
DanceBeforeTheStorm 15 dagar sedan
I indeed googled "how old is Derek Muller" and guess, what Google told me? Today is your birthday, yay! Happy birthday! Thanks for spreading knowledge. A follower in Hungary xx
heclanet
heclanet 15 dagar sedan
Yes, it's one of those things that sounds bad, that is, how many kilos of skin we should lose so that when sweeping the house half a shovel of dirt comes out!
Eamon
Eamon 16 dagar sedan
Someone should research what the ratio is of Veritasium's use of the Imperial and Metric System per video
Emily King
Emily King 16 dagar sedan
“Microbial cloud” The germaphobe in me awakens.
Lonny Sutton
Lonny Sutton 16 dagar sedan
I wonder how much a shower alters these numbers. Likely a shower would shed a significant portion of skin cells, and slow down any rate in the near future. A 48 hour test should control for last shower time. And the overall quantity of skin cells shed into the air or home should adjust for showers.
AGV Records
AGV Records 16 dagar sedan
0:40 Oh! Look at that. It's Derek's birthday today, Nov 9th. Happy Birthday!!!
K. T.
K. T. 16 dagar sedan
7:43 Who chopped that person into 3/5 of a person?
jon rodriguez
jon rodriguez 17 dagar sedan
11:00 Conservation of mass isn't the right model. Dust mites take in oxygen and expel carbon dioxide. That carbon comes from what they eat. The expelled carbon dioxide gas doesn't show up on your scale. Love your videos.
Andreas Brilke
Andreas Brilke 17 dagar sedan
Great video! I love science and facts! :)
Saddam Wali
Saddam Wali 17 dagar sedan
Every one knows Dust depends on the environmental surroundings 😕
Zetsuke4
Zetsuke4 17 dagar sedan
Cloth and fabric?
Yashashwy Padhi
Yashashwy Padhi 17 dagar sedan
The people who googled this have never lived in a mine site
Jonás Carrillo
Jonás Carrillo 18 dagar sedan
When veritasium turnos into vsauce
hellokatyfac3
hellokatyfac3 18 dagar sedan
"See, I don't just put one search term in, read one article and call it a day." What a novel and alien concept.
Sky City
Sky City 18 dagar sedan
All SVfrom videos are sponsored by google.
MBtech
MBtech 18 dagar sedan
“In Dust we Trust”, Chemical Brothers. I’ve certainly lost some skin to that track✌🏼
Shadow Fire Studios
Shadow Fire Studios 18 dagar sedan
Wow cool I didn't know about google, I've got to check it out
Shadow Fire Studios
Shadow Fire Studios 18 dagar sedan
7:45 ah yes, your typical family. A mom, a dad and 0.6 of a child
Wesley Schroeder
Wesley Schroeder 18 dagar sedan
9:13 That's right Derek, the legend should be right there beneath your finger!
Fire Fox
Fire Fox 19 dagar sedan
Lyra Belacqua will remember this
Samuel Hamilton
Samuel Hamilton 19 dagar sedan
Queens university in Kingston is a university not a college lol
Adan Martinez
Adan Martinez 19 dagar sedan
Does popcorn ceiling also include into this?
Sensei
Sensei 19 dagar sedan
Is dust2 TT sided XD Nice google
Yanna Gomes
Yanna Gomes 19 dagar sedan
"Google sponsored this video so I'll use google to show how I get a full answer" >Gets full answer by reading book only found by calling personal friends
Harry Nicholas
Harry Nicholas 20 dagar sedan
2:57 i'll pause to say that we shed 70 BILLION cells every day. so now i have to look THAT up and check it's veracity. 7:40 oh well, it was a big number. i have to go hoover my girlfriend now....
Vishwa Vedanta
Vishwa Vedanta 20 dagar sedan
woah, am I living under a rock? I don't know what a 'google' is??????????!!!!!!!!!!!!!!1/!?!?!/!
Payman Salehishafa
Payman Salehishafa 20 dagar sedan
99% of dust in my house is my Chow Chow's hair.
Nick Van Cleave
Nick Van Cleave 21 dag sedan
Hey Michael from V Sauce here is breathing canabalism?
Hector Isai Martinez Matiano
Hector Isai Martinez Matiano 21 dag sedan
you took a shower xd
Teo Paduraru
Teo Paduraru 21 dag sedan
Get a Dyson :) Air purifier AND vacuum cleaner
Ashari Ty
Ashari Ty 21 dag sedan
my brain bit the dust
_Yasuo_
_Yasuo_ 21 dag sedan
Alright, now that he changed the thumbnail, imma watch it.
TimRaySr
TimRaySr 21 dag sedan
10 seconds in and we see his "dust" contains hemp seed.
Joel Lopes
Joel Lopes 21 dag sedan
Loved the "Is Dust ... 2 T Sided" search option ahah
Harsha Kaligotla
Harsha Kaligotla 21 dag sedan
this guy is cool!
John James Rambo
John James Rambo 22 dagar sedan
He needs way too much time to get to the point... Any tldr?
Egor Eremeev
Egor Eremeev 22 dagar sedan
7:44 "An average family of 2.6 people..." Oh. Now children are considered as fractioned people.
Andre Marques
Andre Marques 22 dagar sedan
1:47 what the f?????? everybody knows that dust2 is ct sided!
F.A
F.A 22 dagar sedan
I am allergic to dust. whenever there's dust around me my nose itches like crazy. but i also have a lot of dandruff and whenever i shake my hair dandruff falls from my head and my nose itches the same way as with dust.
BATTLE BOY ON
BATTLE BOY ON 22 dagar sedan
6:51 who else thought that he's still wearing a container taped to his wrist?
Jingjing Liang
Jingjing Liang 22 dagar sedan
that is, assuming that all your skin cells accumulate on the floor, which is, of course, not true. the people dancing around naked stuck at home cause of covid: ABOUT THAT..
Ricardas Stunza
Ricardas Stunza 23 dagar sedan
"is dust 2 t sided" i lold hard
ulick
ulick 23 dagar sedan
better go on DuckDuckGo and search this "google" thing up
Anything Mike
Anything Mike 23 dagar sedan
Hey Google, please sponsor me, and give me exposure... Mmkay.
Jester Slayer
Jester Slayer 23 dagar sedan
Basically a bit of dust is all aliens would need to learn of our existence if we go extinct, and vice versa if we go beyond the stars
T33K3SS3LCH3N
T33K3SS3LCH3N 23 dagar sedan
If you create 20 mio skin cells per hour then it's only obvious that you also have to shed as many, or you would accumulate or lose skin with time (unless there is a reabsorption mechanism). Glad to see the measurements line up.
Sidharth Vijayan
Sidharth Vijayan 23 dagar sedan
Dust 2 is definitely t sided..
Ehsan Mahdipour
Ehsan Mahdipour 24 dagar sedan
Please don't grow old.
Anonymos Ranger
Anonymos Ranger 24 dagar sedan
So, COVID-19 is small enought to be Dust!
Manas Gharat
Manas Gharat 24 dagar sedan
Sooo Pichai wrote you a cheque 🤔🤔🤔 Kidding 😬🤣 Your videos are fabulous 🤟🏻
Jay Hom
Jay Hom 24 dagar sedan
Google shows you the relevant information. Unless you are looking up for user computer problems and end up with scammers galore.
Gamer Sumiran
Gamer Sumiran 24 dagar sedan
Wathing this video makes me sneeze.
james morgan
james morgan 24 dagar sedan
37 yo and going grey?? wow...
Skittish
Skittish 24 dagar sedan
If science beats back the shrouds of ignorance and re-search (which seems to be implying searching for information previously searched and discovered) is the weapon for the job than that sort of suggests you will never really get anywhere. We need DISCOVERIES! I don't know why I even bother responding to anything anyone ever says on SVfrom when it is just an infinitesimal disturbance in the sea of chaotic noise.
End The Fed
End The Fed 24 dagar sedan
"It's important to be aware of your own biases" "Now let's use the communist search engine to tell me about the world"
Sir Pwnington
Sir Pwnington 22 dagar sedan
'Socialism is when you earn billions of dollars through a capitalist enterprise. The more money you earn, the more socialist it is. And when you earn a whole lot of money, well, that's communism!' - Karl Marx
Vini Vii
Vini Vii 23 dagar sedan
You may not like communism, but that doesn't mean everything you dislike is communism.
Jaberwoky
Jaberwoky 24 dagar sedan
I don’t spend a third of my life in bed. 20% tops.
Owen Toad
Owen Toad 23 dagar sedan
Sleep
Casper Larsson
Casper Larsson 24 dagar sedan
i know im a bit late but i am wondering is it possible that some diseases can be transmitted trough dead skin cells?
Jeff S
Jeff S 24 dagar sedan
8:40 Ironically, that book was sitting there a while collecting dust.
Youtube is Corrupt
Youtube is Corrupt 24 dagar sedan
Revoke 230
Pie2Night
Pie2Night 25 dagar sedan
am i living in a simulation because i was just thinking about this question and a yt video about it pops up
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